A new pediatric eye chart successfully measured visual acuity in patients aged 6 to 16 years with vision ranging from 20/16 to 20/200, a study found. The Handy Eye Chart uses four hand gesture ...

A printable home vision test accurately measured visual acuity in ophthalmology outpatients and displayed high test-retest repeatability in a diagnostic study.

An app to test eyesight easily and affordably using a smartphone is as accurate as traditional charts, according to a study published today.

The best corrected visual acuity was reported as the number of letters correctly read by the patient on an Early Treatment of Diabetic Retinopathy Study (ETDRS) chart at 4 m.

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 ...

The Snellen test is a standard visual test in which the patient views a chart which contains the letter E facing four different directions and in various sizes.

Study results, published in JAMA Ophthalmology, showed the Home Acuity Test can be used to measure visual acuity by telephone for a wide range of outpatients with diverse conditions under the care ...

Visual Acuity Test: People with the sharpest eyes can find the different silhouette in the picture in 5 seconds. Are you one of them? Test your visual skills now!

Children with vitiligo do not have a higher risk for visual acuity deficits than healthy peers, a study suggests.

Theta 2 Orionis A shines at magnitude 5.0 but, to the unaided eye, its light combines with neighboring Theta 2 Orionis B (magnitude 6.2 and about 1′ away), giving it an extra visual kick.