Comparison between a novel device and conventional sight testing methods to determine spectacle prescription: Accuracy and speed of measurement

Not Applicable

Completed

• Conditions: Refractive error; Eye Diseases

• Registration Number: ISRCTN16974179
• Lead Sponsor: Topcon Eye Care Company

Brief Summary

2020 Other publications in https://doi.org/10.3390/s20247208 Habitual Qualitative and Quantitative Physical Activity in Multi-Morbid, Older Persons with Cognitive Impairment (added 29/11/2022) 2020 Other publications in https://doi.org/10.1007/s10433-020-00555-w feasibility sub study (added 29/11/2022)

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2016-05-30
• Study Completion: 2016-09-30
• Last Update Posted: 9 January 2023

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

1. Registered, returning customers attending the optometry practice for a routine, full NHS or private eye examination, during the trial period
2. Aged betwen 13 and 45 years
3. Visual acuity (VA) in each eye better than 0.1 logarithm of the minimum angle of resolution (6/7.5) as determined from their previous records or during the eye examination

Exclusion Criteria

1. New customers attending the optometry practice for the first time
2. Patients attending for any other kind of optometric appointment other than a full eye examination
3. Those requiring significant adaptions to the standard subjective refraction process used in the eye examination, due to mental capacity/language. This includes the need to measure vision with picture or symbol charts rather than a letter chart
4. Individuals who do not exhibit normal binocular vision (ability for the two eyes to work together), including:
4.1. Subjects who report double vision as a symptom during the eye examination
4.2. Subjects who are found to have unstable binocular vision during the eye examination requiring the prescribing of exercises or prisms
4.3. Individuals with a history of lazy eye (amblyopia), suppression of vision in one eye and/or squint (turn in the eye) as recorded in their previous clinical records, or identified during the eye examination
5. Individuals with any ocular pathology or history of ocular surgery, including conditions known to affect the accuracy refraction measurements (media opacities)
6. Vulnerable subjects – will not be recruited on the basis that they would normally undergo a modified rather than the eye examination, adapted to meet their needs

Study & Design

• Study Type: Interventional
• Study Design: Not specified