Results from smartphone-based Snellen charts, which are eye charts used to measure visual acuity, are not consistent with results from standard Snellen visual acuity chart tests, according to a study ...

Assessment of visual acuity (VA) has been shown to vary between tests, which may be attributable in part to test inaccuracies, such as a change in the distance between the chart and subject. Therefore ...

British ophthalmologist Andrew Bastawrous moved his family from London to Kenya in 2013 with $150,000 of equipment, a team of 15 people and an ambitious goal: to understand the causes of blindness in ...

A new study shows potential for eye tests to be conducted easily and affordably using a smartphone app. An app to test eyesight easily and affordably using a smartphone is as accurate as traditional ...

WILMINGTON -- Do you remember in school lining up with your class to take a vision test using the Snelling Chart -- big letters at the top, smaller letters in bottom rows? Something new has come to ...