We have located links that may give you full text access.
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
A portable visual acuity device used in diabetic retinal screening.
American Journal of Ophthalmology 2007 March
PURPOSE: To correlate visual acuity measured with the Optec 800 to the gold-standard Early Treatment Diabetic Retinopathy Study (ETDRS) chart.
DESIGN: Prospective, cross-sectional study.
METHODS: Forty patients of the Vanderbilt Eye Institute agreed to undergo visual acuity testing. Five patients were excluded because of enucleation or functional blindness of one or both eyes. Two patients were excluded because of poor cooperation during testing. Patients were randomized to one of the two methods and participated in visual acuity testing in a forced-choice manner. The sequence was repeated with the alternate instrument. A total-correct score was calculated for each data set.
RESULTS: There was no statistically significant difference in scores between the two methods (P(1) = .153, P(2) = .307.) Other factors such as gender, age, and instrument testing order did not affect performance. Age was inversely correlated with total correct score.
CONCLUSIONS: In this small cohort, the Optec 800 (Chicago, Illinois, USA) and the ETDRS chart recorded similar visual acuity measurements.
DESIGN: Prospective, cross-sectional study.
METHODS: Forty patients of the Vanderbilt Eye Institute agreed to undergo visual acuity testing. Five patients were excluded because of enucleation or functional blindness of one or both eyes. Two patients were excluded because of poor cooperation during testing. Patients were randomized to one of the two methods and participated in visual acuity testing in a forced-choice manner. The sequence was repeated with the alternate instrument. A total-correct score was calculated for each data set.
RESULTS: There was no statistically significant difference in scores between the two methods (P(1) = .153, P(2) = .307.) Other factors such as gender, age, and instrument testing order did not affect performance. Age was inversely correlated with total correct score.
CONCLUSIONS: In this small cohort, the Optec 800 (Chicago, Illinois, USA) and the ETDRS chart recorded similar visual acuity measurements.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app