Efficacy of a remote based computerised visual acuity measurement

Srinivasan, Krithica and Ramesh, S Ve and Babu, Noushad and Nijil, Sanker and Ray, Avik and Karuna, SM (2012) Efficacy of a remote based computerised visual acuity measurement. British Journal of Ophthalmology. ISSN 1468-2079

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Aim: To determine the efficacy of a remotely operated computer-based logarithmic (logMAR) visual acuity chart. Methods: Visual acuity was tested using a laptop or computer-based logMAR chart (COMPlog) for all subjects by two different methods. The methods differed by the physical presence and absence (remote) of an optometrist and in the mode of instructions provided. Remote access was obtained through the internet, using Teamviewer software to control the system linked to COMPlog and instructions were provided by telephone. The order of measurements and the eye to be tested was randomised. logMAR visual acuity and time taken were recorded. A questionnaire was used to assess the participant’s feedback. Results: Intraclass correlation for visual acuity between the two methods (a¼0.964, 95% CI 0.937 to 0.979). There was no statistically significant difference (p¼0.648) in the median visual acuity measurement between the two methods (median difference 0.00, IQR 0.20 logMAR). The time taken between the two methods was not statistically significant (p¼0.457). There was no significant difference in the responses to the questionnaire between the study methods (p¼0.119). Conclusions: Tele (remotely controlled) visual acuity measurement is as reliable as that measured with the physical presence of an optometrist.

Item Type: Article
Subjects: Allied Health > MCOAHS Manipal > Optometry
Depositing User: KMC Manipal
Date Deposited: 28 May 2012 10:52
Last Modified: 28 May 2012 10:52
URI: http://eprints.manipal.edu/id/eprint/76546

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