visual acuity


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visual acuity

[′vizh·ə·wəl ə′kyü·əd·ē]
(physiology)
The ability to see fine details of an object; specifically, the ability to see an object whose angle subtended at the eye is 1 minute of arc.

visual acuity

A measure of the ability to distinguish fine details; the reciprocal of the angular size of critical detail which is just large enough to be seen.
References in periodicals archive ?
adults aged >20 years with diabetes was 7.2%, which indicated that the proper prescription for glasses or contact lenses would have restored normal visual acuity to 65.5% of visually impaired adults with diabetes (Table).
Several factors may contribute to increased subnormal visual acuity among Korean children.
After the participant completed the subjective rating scale, accommodation power, CFF, and visual acuity were measured again.
Radiation may cause stabilization of visual acuity and prevent progression of the disease.
According to the company, treatment has already begun in the next cohort of patients, who have a greater baseline level of visual acuity than those treated so far.
For statistical analysis t-test was used to see changes in the recorded visual acuity. It was statistically significant if the value was less than 0.05.
Table 1: Preoperative and post-operative visual acuity
The mean change from baseline in visual acuity for these first three subjects early on in duration of follow up is thus plus 16 letters in the study eye, compared with a mean change from baseline of minus 1 letter in the untreated control eyes.
The authors reported a significant increase in visual acuity and a significant decrease in central retinal thickness after 1 month.
Visual acuity (VA) assessment may be conducted as a
The best-corrected visual acuity (BCVA) on the better-seeing eye was less than 50% ([less than or equal to]0.5) in all study patients.
The researchers found that there was no significant difference between ERV and monofocal groups in uncorrected binocular visual acuity at distance (P = 0.595).