WHEN testing visual acuity with Snellen's current type, we use black letters printed upon a white ground, and the transition from black to white is as abrupt as can be. If the patient's eyes are ...

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 ...

New Vision Test Extends Range of Visual Acuity Measurement The Berkeley Rudimentary Vision Test (BRVT), a simplified visual task, is feasible for measuring visual acuity in patients with severe visual ...

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 ...

Please provide your email address to receive an email when new articles are posted on . Mobile apps can successfully mimic paper-based visual function tests, results showed. Such apps may expand ...

Visual impairment may be a risk factor for dementia, according to a study published in JAMA Ophthalmology in which researchers compared the likelihood of incident dementia or mild cognitive impairment ...

Visual acuity is a measure of how small a detail that is visible can be, and still be identified by a person. The most common way of testing vision is to use an eye chart, (the kind that you see in an ...