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 ?
Dynamic visual acuity while walking in normals and labyrinthine-deficient patients.
Pre-laser visual acuity, slit lamp examination and intraocular pressure were recorded.
Third, because this study measured only objective refraction and performed no subjective refinement of objective refraction measurements, estimates of visual acuity after correction might not reflect the best corrected vision that participants might attain, resulting in an underestimate of CVI prevalence.
Results from this project showed subnormal visual acuity as high as 15% among kindergarten children, and it increased with increasing grades.
Wall found that children with abnormal photo-refraction results were much more likely than those with abnormal visual acuity results to be referred by the pediatrician for further evaluation--85.
Mydriasis was not routinely performed, however if the disc or macula were not visualized or there was an unexplained non-correctable reduced visual acuity, then mydriasis with 1% tropicamide was performed and the posterior pole of the eye re-eamined.
Thomas Bosley, suggests, "Damage to the visual association cortex may explain why patients with Alzheimer's disease have good visual acuity and healthy eyes but still experience other types of visual problems.
RVO), a leader in implantable inlay technology to treat presbyopia, announced that clinical results from a single-center study showing significant improvement in near visual acuity following treatment with its proprietary, patented Raindrop[TM] Near Vision Inlay (formerly the Vue+[R] and PresbyLens[R]) were presented by John Olkowski, M.
Seventeen months after follow-up (December 19, 2013), foveal OCT showed a total regression of optic pitinduced maculopathy, and visual acuity was 20/20 in the right eye.
Biopharmaceutical company Ophthotech (NasdaqGS:OPHT) said on Friday that it has not met the primary endpoint of mean change in visual acuity at 12 months under its two pivotal Phase 3 clinical trials of Fovista in combination with Lucentis compared to Lucentis monotherapy in wet age-related macular degeneration patients.