Visual acuity is the clarity of vision when measured at a distance of 20 feet. Learn more about what it means, how it's tested, and more.

Visual acuity (VA) was assessed using the ETDRS chart (with best correction) as well as by the PAM. Retinal thickness and sensitivity was measured by an automatic fundus perimetry/tomography system.

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 ...

Finely tuned eye movements are instrumental in enhancing visual acuity, according to findings of a study published in Nature Communications.

A visual acuity test shows how well you can see a word or symbol from a certain distance. Learn what to expect and what the results mean.

Table 1 Visual Acuity in Patients with Choroideremia Who Received Retinal Gene Therapy. A cataract developed in the study eye in Patient 4 at 2 years.

Bailey-Lovie test. This test measures both visual acuity and contrast sensitivity. Other tests used are the Functional Acuity Contrast Test, the Cambridge test, MARS test, and the Test Chart 2000.

Greater vision improvements were seen in people with macular edema secondary to retinal vein occlusion who received more anti-VEGF injections over the course of 5 years.

The Dictionary of Visual Science defines visual acuity as "acuteness or clearness of vision, especially form vision, which is dependent on the sharpness of the retinal focus within the eye, the ...

CARLSBAD, Calif., June 23, 2025--Lineage Cell Therapeutics, Inc. (NYSE American and TASE: LCTX), a clinical-stage biotechnology company developing novel allogeneic, or "off the shelf", cell ...