Description:1
FORM2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETESPECIFICATION
(Seesection10andrule13)
1. TITLEOFTHEINVENTION
A DEVICE FOR ENHANCING THE ACCURACY AND RELIABILITY OF RETINOSCOPY EYE EXAMINATIONS
2. APPLICANT
(i) NAME : GD Goenka University
(ii) NATIONALITY: Indian
(iii) ADDRESS : Sohna Gurugram Road, Sohna, Haryana, India,122103
(i) PREAMBLETOTHEDESCRIPTION
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.
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A DEVICE FOR ENHANCING THE ACCURACY AND RELIABILITY OF RETINOSCOPY EYE EXAMINATIONS
TECHNICAL FIELD
[1] The present invention relates to a device designed to enhance the accuracy and reliability of retinoscopy eye examinations. Most particularly, it is a device for 5 enhancing the accuracy and reliability of retinoscopy eye examinationsincorporates several innovative features to optimize the examination process, improve patient comfort, and facilitate the work of eye care practitioners.
BACKGROUND
[2] Retinoscopy is a fundamental procedure used in eye care for the estimation of 10 refractive errors, playing a crucial role in prescribing corrective lenses and diagnosing various eye conditions. Traditional manual retinoscopy, while widely practiced, is inherently subjective and reliant on the expertise and skill of the practitioner, often resulting in inconsistencies and potential inaccuracies in measurements. 15
[3] Manual retinoscopy involves the use of a retinoscope to illuminate the patient's eye with a beam of light, observing the reflections to assess the refractive status. However, due to the subjective nature of this method, deviations from the correct alignment of the retinoscopic light source can occur, leading to false readings and misinterpretations of refractive errors. 20
[4] Additionally, manual retinoscopy requires significant practice and skill development to achieve proficiency, posing challenges for beginners in mastering the technique and prolonging the learning curve. Novice practitioners often struggle with maintaining the correct alignment of the retinoscopic beam, leading to errors in measurements and the need for extensive training and supervision. 25
[5] To address these challenges and enhance the accuracy and reliability of retinoscopy, a novel device has been developed. The device incorporates
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advanced sensing technology, including sensor and LEDs, to provide real-time feedback on the alignment of the retinoscopic light relative to the eye under examination. By continuously monitoring the intensity and direction of the retinoscopic light, the device alerts the practitioner to any deviations from the optimal alignment, thereby minimizing errors and improving diagnostic precision. 5
[6] Furthermore, the device is designed to be user-friendly and seamlessly integrated into the retinoscopy process, replacing the traditional trial frame without adding complexity. Its intuitive alert system enhances usability, particularly for novice practitioners, by providing immediate feedback on alignment errors and guiding them towards accurate measurements. 10
[7] Ultimately, this invention aims to shorten the learning curve for beginners in retinoscopy proficiency and improve the overall quality of eye care delivery by ensuring consistent and reliable measurements of refractive errors. With its advanced sensing technology and user-friendly design, the device has the potential to revolutionize the practice of retinoscopy, making it more accessible 15 and efficient for eye care practitioners worldwide.
OBJECTIVE OF THE INVENTION:
[8] The present invention has been developed in response to the present state of the art, and in particular, in response to the problems and needs in the art that have not yet been fully solved by currently available techniques and processes. 20
[9] Accordingly, the present invention pertains to a device designed to enhance the accuracy and reliability of retinoscopy eye examinations. Most particularly, it is a device for enhancing the accuracy and reliability of retinoscopy eye examinations incorporates several innovative features to optimize the examination process, improve patient comfort, and facilitate the work of eye care practitioners. 25
[10] The yet one more object of present invention has been developed a device to enhance the accuracy and reliability of retinoscopy eye examinations.
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[11] Therefore, the current invention successfully overcoming all the above-discussed shortcomings present in the art.
[12] The main object of the present invention is to develop the deviceto provide a spectacle trial frame with adjustable geometric parameters for individualized fitting to patients. 5
[13] The main object of the present invention is to develop the deviceto ensure power provision to the photodiode sensor and LEDs through an integrated power source.
[14] The main object of the present invention is to develop the device toprovide immediate notification of off-axis alignment errors through activated LEDs. 10
[15] Another object of the present invention is to develop the deviceto utilize green and red LEDs to indicate correct alignment and deviation, respectively.
[16] Another object of the present invention is to develop for the device to integrate a data recording and analysis module for real-time data collection facilitating post-examination analysis and feedback. 15
[17] The main object of the present invention is to develop the device to Real-time Alignment Monitoring, Simplicity and Ease of Use, Enhanced Learning Support and Cost-effectiveness
[18] How the foregoing objects are achieved will be clear from the following brief description. In this context, it is clarified that the description provided is 20 non-limiting and is only by way of explanation. Other objects and advantages of the invention will become apparent as the foregoing description proceeds, taken together with the accompanying drawings and the appended claims.
SUMMARY
[19] This summary is provided to introduce a selection of concepts in a 25 simplified format that is further described in the detailed description of the
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invention. This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended for determining the scope of the invention.
[20] According to an aspect of the present invention relates to a device for enhancing the accuracy and reliability of retinoscopy eye examinations.The 5 device havingcomprises a spectacle trial frame with two circular half frames featuring fastener arrangements for independent adjustment of geometric parameters based on patient size. An adjustable unit sits between the half frames, integrating a photodiode sensor to detect retinoscopic light intensity and direction. Additionally, a red and green LED are embedded in the trial frame, offering 10 immediate visual feedback to the eye care practitioner regarding light alignment relative to the examined eye. A power source within the trial frame energizes the photodiode sensor and LEDs, while a control unit regulates sensor sensitivity and LED activation. A LED indicator displays device status, facilitating user-friendliness and maintenance, including power and battery level indications. This 15 comprehensive design enhances examination precision and practitioner convenience in assessing visual acuity.
[21] In an aspect of the invention, the photodiode sensor continuously monitors the alignment of the retinoscopic light in real-time during the examination process, thereby providing immediate feedback to the eye care practitioner 20 regarding any deviation from the optimal alignment, thereby distinguishing the device from manual methods lacking real-time monitoring capabilities.
[22] In an aspect of the invention, the LEDs are activated upon detecting deviations from the correct alignment of the retinoscopic light, thereby distinguishing the device by providing immediate notification of off-axis 25 alignment errors, unlike approaches relying solely on visual estimation or post-examination analysis for error detection.
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[23] In an aspect of the invention, the power source having a rechargeable battery pack detachably mounted on the trial frame, and the battery pack is rechargeable via a standard charging port.
[24] In an aspect of the invention, the green LED illuminates when the alignment is correct, and the red LED illuminate when the alignment deviates 5 from the correct axis, thereby indicating the need for adjustment.
[25] In an aspect of the invention, the photodiode sensor is calibrated to detect deviations in the intensity of the retinoscopic light beyond a predetermined threshold, thereby enabling precise monitoring of alignment errors during the retinoscopy examination process. 10
[26] In an aspect of the invention,the device further comprising a data recording and analysis module integrated into said trial frame to record real-time data regarding the alignment status of the retinoscopic light detected by the photodiode sensor, thereby facilitating post-examination analysis and feedback for continuous improvement in retinoscopy proficiency. 15
[27] Accordingly, a method is disclosed for enhancing the accuracy and reliability of retinoscopy eye examinations utilizing a specialized device consisting of a spectacle trial frame, an adjustable unit, a photodiode sensor, multiple LEDs, a power source, a control unit, and an LED indicator. The method involves securing the spectacle trial frame onto the patient, featuring two circular 20 half frames with adaptable fastener arrangements tailored to adjust geometric parameters according to the patient's size. Subsequently, the power source integrated into the trial frame is activated to supply power to both the photodiode sensor and LEDs. Retinoscopic light is directed towards the eye under examination, with the photodiode sensor detecting its intensity and direction 25 within the trial frame. Immediate visual feedback concerning the alignment of the retinoscopic light relative to the eye under examination is then provided to the eye care practitioner via a red LED and a green LED integrated into the trial frame. Sensitivity levels of the photodiode sensor are adjusted, and the LEDs are
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activated or deactivated as necessary using the control unit. Additionally, the device's status, including power on/off and low battery indication, is continuously monitored through the LED indicator also integrated into the trial frame.
[28] To further clarify the advantages and features of the present invention, a more particular description of the invention will be rendered by reference to 5 specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings. 10
BRIEF DESCRIPTION OF THE DRAWINGS
[29] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and devices in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not 15 necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components, electronic components or 20 circuitry commonly used to implement such components.
[30] Figure 1(a) illustrates block diagram ofa device for enhancing the accuracy and reliability of retinoscopy eye examinationsand Figure 1(b)illustrates the front view of thedevice in accordance with an embodiment of the invention; and 25
[31] Figure 2 illustrates flow chart of the process of a device for enhancing the accuracy and reliability of retinoscopy eye examinations in accordance with an embodiment of the invention.
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[32] Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more 5 components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein. 10
DETAILED DESCRIPTION OF EMBODIMENTS
[33] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is 15 thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
[34] It will be understood by those skilled in the art that the foregoing general 20 description and the following detailed description are explanatory of the invention and are not intended to be restrictive thereof.
[35] Reference throughout this specification to “an aspect”, “another aspect” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one 25 embodiment of the present invention. Thus, appearances of the phrase “in an embodiment”, “in another embodiment” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
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[36] The terms "comprise", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded 5 by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
[37] Unless otherwise defined, all technical and scientific terms used herein 10 have the same meaning as commonly understood by one of ordinary skilled in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.
[38] The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced items. 15
[39] The terms “having”, “comprising”, “including”, and variations thereof signify the presence of a component.
[40] Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
[41] Referring Figure 1 illustrates a device (100) for enhancing the accuracy 20 and reliability of retinoscopy eye examinations. The device (100) described is a tool designed to improve the accuracy and reliability of retinoscopy eye examinations, a common method used by eye care practitioners to determine a patient's eyeglass prescription. The device comprises several key components meticulously integrated into a spectacle trial frame(102). Firstly, the trial frame 25 (100) itself consists of two circular half frames equipped with fastener arrangements that allow independent adjustment of geometric parameters
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according to the patient's size, ensuring a comfortable and precise fit during the examination process.
[42] An adjustable unit is positioned between the two half frames, likely to further customize the fit and alignment of the trial frame as needed. Integrated into the trial frame is a photodiode sensor(106), meticulously configured to detect 5 the intensity and direction of retinoscopic light directed towards the patient's eye under examination. The sensor (106) serves as a crucial element in measuring the refractive error of the eye accurately.the photodiode sensor continuously monitors the alignment of the retinoscopic light in real-time during the examination process, thereby providing immediate feedback to the eye care practitioner 10 regarding any deviation from the optimal alignment, thereby distinguishing the device from manual methods lacking real-time monitoring capabilities.
[43] Additionally, the trial frame (102) incorporates a set of LEDs, including a red LED and a green LED. These LEDs are strategically placed to provide immediate visual feedback to the eye care practitioner regarding the alignment of 15 the retinoscopic light relative to the patient's eye. This real-time feedback enhances the practitioner's ability to perform the examination with precision.The LEDs (110) are activated upon detecting deviations from the correct alignment of the retinoscopic light, thereby distinguishing the device by providing immediate notification of off-axis alignment errors, unlike approaches relying solely on 20 visual estimation or post-examination analysis for error detection.
[44] A power source (108) is seamlessly integrated into the trial frame to provide the necessary power to both the photodiode sensor (106) and the LEDs(110). The power source (108) having a rechargeable battery pack detachably mounted on the trial frame, and the battery pack is rechargeable via a 25 standard charging port. The photodiode sensor (106) is calibrated to detect deviations in the intensity of the retinoscopic light beyond a predetermined threshold, thereby enabling precise monitoring of alignment errors during the retinoscopy examination process.
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[45] This ensures uninterrupted functionality throughout the examination process. A control unit (104) is also included, meticulously configured to adjust the sensitivity levels of the photodiode sensor (106) and activate or deactivate the LEDs (110) as needed, allowing for customization based on specific examination requirements.the green LED illuminates when the alignment is correct, and the 5 red LED illuminate when the alignment deviates from the correct axis, thereby indicating the need for adjustment.
[46] Furthermore, the device incorporates an LED indicator, serving as a visual cue for the device's status, including power on/off and low battery indication. This feature adds to the device's user-friendliness and ensures ease of use and 10 maintenance for practitioners.
[47] The device (100) further comprising a data recording and analysis module integrated into said trial frame to record real-time data regarding the alignment status of the retinoscopic light detected by the photodiode sensor, thereby facilitating post-examination analysis and feedback for continuous improvement 15 in retinoscopy proficiency.
[48] Referring to Figure 2, illustrates a method outlined aims to enhance the precision and dependability of retinoscopy eye examinations through the utilization of a specialized device consisting of various integrated components. The procedure begins with securing the spectacle trial frame onto the patient, 20 ensuring a comfortable and tailored fit facilitated by the independent adjustment capabilities of the circular half frames and fastener arrangements according to the patient's size. Subsequently, the power source integrated within the trial frame is activated to supply power to both the photodiode sensor and the LEDs.
[49] Additionally, Retinoscopic light is then directed towards the eye under 25 examination, with the photodiode sensor meticulously detecting the intensity and direction of this light. This crucial step allows for the accurate measurement of refractive errors in the eye. Immediate visual feedback regarding the alignment of the retinoscopic light relative to the eye under examination is provided to the eye
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care practitioner through the integration of both red and green LEDs into the trial frame.
[50] The method further involves adjusting the sensitivity levels of the photodiode sensor and activating or deactivating the LEDs as necessary using the control unit. This customization aspect ensures optimal performance tailored to 5 the specific requirements of each examination. Additionally, the device's status, including power on/off and low battery indication, is continuously monitored through the LED indicator integrated into the trial frame, facilitating seamless operation and maintenance of the device throughout the examination process.
[51] In addition, the method meticulously incorporates each component of the 10 specialized device to streamline the retinoscopy eye examination process, ultimately leading to enhanced accuracy and reliability in determining patients' eyeglass prescriptions and improving overall patient care in the field of optometry.
[53] While certain present preferred embodiments of the invention have been 15 illustrated and described herein, it is to be understood that the invention is not limited thereto. Clearly, the invention may be otherwise variously embodied, and practiced within the scope of the following claims.
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Claims 5
We claim:
1. A device (100) for enhancing the accuracy and reliability of retinoscopy eye examinations, comprising:
a spectacle trial frame (102) including two circular half frameswith two fastener arrangement adapted to provide independent adjustment of 10 one or more geometice parameters of the circular frame according to the size of the patient, to be worn by a patient during the process;
an adjustable unit being disposed between the two half frames;
a photodiode sensor (106) integrated into the trial frame, configured to detect the intensity and direction of retinoscopic light 15 directed towards the eye under examination;
a plurality of LEDs (110) integrated into the trial frame a red LED and a green LED, wherein the LEDs are configured to provide immediate visual feedback to an eye care practitioner regarding the alignment of the retinoscopic light relative to the eye under examination; 20
a power source (108) integrated to the trial frame, configured to provide power to the photodiode sensor and LEDs;
a control unit (104) configured to adjust sensitivity levels of said photodiode sensor and activate/deactivate said LEDs; and
a LED indicator for visual feedback on the device's status, 25 including power on/off and low battery indication, ensuring ease of use and maintenance.
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2. The device (100) as claimed in claim 1, wherein the photodiode sensor (106) continuously monitors the alignment of the retinoscopic light in real-time during the examination process, thereby providing immediate feedback to the eye care practitioner regarding any deviation from the optimal alignment, thereby distinguishing the device from manual 5 methods lacking real-time monitoring capabilities.
3. The device (100) as claimed in claim 1, wherein the LEDs (110) are activated upon detecting deviations from the correct alignment of the retinoscopic light, thereby distinguishing the device by providing 10 immediate notification of off-axis alignment errors, unlike approaches relying solely on visual estimation or post-examination analysis for error detection.
4. The device (100) as claimed in claim 1, wherein the power source (108) 15 having a rechargeable battery pack detachably mounted on the trial frame, and the battery pack is rechargeable via a standard charging port.
5. The device (100) as claimed in claim 1, whereinthe green LED illuminates when the alignment is correct, and the red LED illuminate when the 20 alignment deviates from the correct axis, thereby indicating the need for adjustment.
6. The device (100) as claimed in claim 1, wherein the photodiode sensor (106) is calibrated to detect deviations in the intensity of the retinoscopic 25 light beyond a predetermined threshold, thereby enabling precise monitoring of alignment errors during the retinoscopy examination process.
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7. The device (100) as claimed in claim 1, further comprising a data recording and analysis module integrated into said trial frame to record real-time data regarding the alignment status of the retinoscopic light detected by the photodiode sensor, thereby facilitating post-examination analysis and feedback for continuous improvement in retinoscopy 5 proficiency.
8. A method (300) for enhancing the accuracy and reliability of retinoscopy eye examinations using a device comprising; a spectacle trial frame(102), an adjustable unit, a photodiode sensor(106), a plurality of LEDs(110), a 10 power source(108), a control unit(104), and a LED indicator, the method step of:
securing the spectacle trial frame (102) on a patient, wherein the trial frame includes two circular half frames with two fastener arrangements adapted for independent adjustment of geometric parameters 15 according to the patient's size;
activating the power source integrated into the trial frame to provide power to the photodiode sensor and LEDs;
directing retinoscopic light towards the eye under examination;
detecting the intensity and direction of the retinoscopic light using 20 the photodiode sensor integrated into the trial frame;
providing immediate visual feedback to an eye care practitioner regarding the alignment of the retinoscopic light relative to the eye under examination through a red LED and a green LED integrated into the trial frame; 25
adjusting sensitivity levels of the photodiode sensor and activating/deactivating the LEDs using the control unit; and
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monitoring the device's status, including power on/off and low battery indication, through the LED indicator integrated into the trial frame.
Dated this 11/03/2024 5
GD Goenka University
APPLICANT(s) NAME AND SIGNATURE 10
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ABTRACT
A DEVICE FOR ENHANCING THE ACCURACY AND RELIABILITY OF RETINOSCOPY EYE EXAMINATIONS
The present invention relates to a device (100) designed to enhance the accuracy 5 and reliability of retinoscopy eye examinations. The device comprises several integrated components within a spectacle trial frame(102). The frame includes two circular half frames with fastener arrangements for independent adjustment of geometric parameters based on the patient's size. An adjustable unit is positioned between the half frames. A photodiode sensor (106) is integrated into the frame to 10 detect the intensity and direction of retinoscopic light directed towards the eye under examination. Additionally, the frame (102) incorporates a plurality of LEDs, (110) including red and green LEDs, to provide immediate visual feedback to the eye care practitioner regarding the alignment of the retinoscopic light relative to the eye under examination. A power source (108) within the frame 15 supplies power to both the photodiode sensor and LEDs. A control unit (104) is included to adjust the sensitivity levels of the photodiode sensor (106) and activate/deactivate the LEDs as needed. Furthermore, the device features an LED indicator for visual feedback on its status, including power on/off and low battery indication, ensuring ease of use and maintenance. 20
Figure 1(a) and 1(b)
25 , Claims:We claim:
1. A device (100) for enhancing the accuracy and reliability of retinoscopy eye examinations, comprising:
a spectacle trial frame (102) including two circular half frameswith two fastener arrangement adapted to provide independent adjustment of 10 one or more geometice parameters of the circular frame according to the size of the patient, to be worn by a patient during the process;
an adjustable unit being disposed between the two half frames;
a photodiode sensor (106) integrated into the trial frame, configured to detect the intensity and direction of retinoscopic light 15 directed towards the eye under examination;
a plurality of LEDs (110) integrated into the trial frame a red LED and a green LED, wherein the LEDs are configured to provide immediate visual feedback to an eye care practitioner regarding the alignment of the retinoscopic light relative to the eye under examination; 20
a power source (108) integrated to the trial frame, configured to provide power to the photodiode sensor and LEDs;
a control unit (104) configured to adjust sensitivity levels of said photodiode sensor and activate/deactivate said LEDs; and
a LED indicator for visual feedback on the device's status, 25 including power on/off and low battery indication, ensuring ease of use and maintenance.
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2. The device (100) as claimed in claim 1, wherein the photodiode sensor (106) continuously monitors the alignment of the retinoscopic light in real-time during the examination process, thereby providing immediate feedback to the eye care practitioner regarding any deviation from the optimal alignment, thereby distinguishing the device from manual 5 methods lacking real-time monitoring capabilities.
3. The device (100) as claimed in claim 1, wherein the LEDs (110) are activated upon detecting deviations from the correct alignment of the retinoscopic light, thereby distinguishing the device by providing 10 immediate notification of off-axis alignment errors, unlike approaches relying solely on visual estimation or post-examination analysis for error detection.
4. The device (100) as claimed in claim 1, wherein the power source (108) 15 having a rechargeable battery pack detachably mounted on the trial frame, and the battery pack is rechargeable via a standard charging port.
5. The device (100) as claimed in claim 1, whereinthe green LED illuminates when the alignment is correct, and the red LED illuminate when the 20 alignment deviates from the correct axis, thereby indicating the need for adjustment.
6. The device (100) as claimed in claim 1, wherein the photodiode sensor (106) is calibrated to detect deviations in the intensity of the retinoscopic 25 light beyond a predetermined threshold, thereby enabling precise monitoring of alignment errors during the retinoscopy examination process.
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7. The device (100) as claimed in claim 1, further comprising a data recording and analysis module integrated into said trial frame to record real-time data regarding the alignment status of the retinoscopic light detected by the photodiode sensor, thereby facilitating post-examination analysis and feedback for continuous improvement in retinoscopy 5 proficiency.
8. A method (300) for enhancing the accuracy and reliability of retinoscopy eye examinations using a device comprising; a spectacle trial frame(102), an adjustable unit, a photodiode sensor(106), a plurality of LEDs(110), a 10 power source(108), a control unit(104), and a LED indicator, the method step of:
securing the spectacle trial frame (102) on a patient, wherein the trial frame includes two circular half frames with two fastener arrangements adapted for independent adjustment of geometric parameters 15 according to the patient's size;
activating the power source integrated into the trial frame to provide power to the photodiode sensor and LEDs;
directing retinoscopic light towards the eye under examination;
detecting the intensity and direction of the retinoscopic light using 20 the photodiode sensor integrated into the trial frame;
providing immediate visual feedback to an eye care practitioner regarding the alignment of the retinoscopic light relative to the eye under examination through a red LED and a green LED integrated into the trial frame; 25
adjusting sensitivity levels of the photodiode sensor and activating/deactivating the LEDs using the control unit; and
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monitoring the device's status, including power on/off and low battery indication, through the LED indicator integrated into the trial frame.