optotype


Also found in: Medical, Wikipedia.

optotype

type used in the testing of eyesight.
See also: Eyes, Printing
Mentioned in ?
References in periodicals archive ?
Tenders are invited for Supply of Digital Snellen optotype
Visual acuity (VA) was determined using Snellen optotype, from the distance of 6 meters, in the light of constant brightness and with best refractive correction.
Visual acuity was measured with a Snellen tumbling E chart, with optotype size 20/200 on one side and 20/60 on the other side, at a distance of 20 feet (6 meters).
Optotype wall decoration, Barkley wall-mount storage unit, Lowell industrial floor lamp, three Indus storage boxes, Edison industrial end table, industrial red metal stool, Edison secretary desk, Edison industrial cabinet in red, all Maisons du Monde
36], consists of two printed optotype charts, 97 x 82 cm, with eight lines each showing a different sequence of letters (6 per line).
Optotype acuity and re-operation rate after unilateral cataract surgery during the first 6 months of life with or without IOL implantation.
Once the head completes 3 consecutive cycles of movements, an optotype in the shape of the capital letter "E" is immediately presented to the subject on a computer monitor.
LogMAR, the logarithm of the minimum angle of resolution, refers to the angular size of the optotype that can just be discerned.
A pediatric ophthalmologist performed a complete ophthalmologic examination, which consisted of visual acuity evaluated by Snellen or Allen optotype recognition, Teller visual acuity, or assessment of fixation reflex; measurement of ocular alignment in primary gaze at both distance and near using the alternate and simultaneous prism cover tests; and evaluation of pupils for anisocoria and afferent defects.
Visual acuity of eligible subjects was measured with a tumbling Snellen "E" chart with a size 200 optotype on one side and a size 60 optotype on the other, at a distance of 10 or 20 feet, inside or in front of study participants' houses, in daylight.
were the first to develop a cDVA by flashing the letter E optotype whenever head velocities were between 120 and 180[degrees]/s [10].