Nature

The Eye Phone Study: reliability and accuracy of assessing Snellen visual acuity using smartphone technology

Smartphone-based Snellen visual acuity charts has become popularized; however, their accuracy has not been established. This study aimed to evaluate the equivalence of a smartphone-based visual acuity ...
Healio

Hand-held ETDRS device enables accurate, reproducible visual acuity measurements

Please provide your email address to receive an email when new articles are posted on . PHILADELPHIA — A hand-held internally illuminated ETDRS device provided accurate and repeatable visual acuity ...
Business Wire

Introducing the EyeQue Insight, the World’s Most Accurate, Fully Mobile Visual Acuity Screener for Children and Adults

Now available for pre-order on Kickstarter, the DIY vision screener checks for 20/20 vision in under 3 minutes. SAN FRANCISCO--(BUSINESS WIRE)--EyeQue™, developers of award winning, affordable vision ...
Nature

Response to: ‘Comment on The Eye Phone Study: reliability and accuracy of assessing Snellen visual acuity using smartphone technology’

Our formula for calculation of optotype size is also based on the arcminutes subtended by each letter, where we have calculated the ideal optotype size for a standard letter and combined this with ...