High Contrast Visual Acuity
A comparison of contrast sensitivity in early mild and early intermediate age-related macular degeneration after adjusting for age and visual acuity
... of visual acuity is better in AMD patients whose con- trast sensitivity is less affected or intact in compar- ison to other patients whose contrast sensitivity is worse ...if contrast ...
9
Photometric compliance of tablet screens and retro-illuminated acuity charts as visual acuity measurement devices
... to high contrast visual acuity test standards, and provides a practical guide to health care profes- sionals working in this ...target contrast, and consequently small effects on ...
12
Evaluation of contrast visual acuity in patients with retinitis pigmentosa
... the contrast visual acuity was also reduced under a photopic background, where the luminance was much higher than that of conventional visual ...under high luminance level affects ...
5
Visual acuity and contrast sensitivity screening with a new ipad application
... In our case, we found a lower agreement between tests at high spatial frequencies, but this fact could be related to test-retest reliabilities of FSCS and FACT. In fact, even though this issue was not mentioned in ...
25
An Assessment of the Visual Acuity and Contrast Sensitivity of Commercial Vehicle Drivers in Rivers State, Nigeria
... Good visual function is essential for safe ...a visual function, such as visual acuity, contrast sensitivity or visual field will diminish a person’s ability to operate a motor ...
7
Effect of retinal laser photocoagulation on contrast sensitivity and visual acuity in patients of diabetic retinopathy
... in high spatial frequency CS during the closely spaced PRP ...Snellen’s visual acuity remained stable at the pre-laser level, these results indicate the need for more sensitive measures of ...
7
VISUAL ACUITY MEASUREMENT STANDARD
... measuring visual acuity, it is often desirable to measure the worst of the two eyes first (if known), then the eye with the better acuity and, if indicated, then to evaluate binocular visual ...
18
Longitudinal analysis of contrast acuity in Friedreich ataxia
... low-contrast acuity over time that is greater in subjects with higher GAA repeat ...lengths. High-contrast acuity is also affected, but this becomes apparent only at longer follow-up ...
8
Influence of optic quality on contrast sensitivity and visual acuity in eyes with a rigid or flexible phakic intraocular lens
... to high ametropia are corneal ablation (eg, laser in situ kerato- mileusis, photorefractive keratectomy) 1 and phakic intraocular lens (pIOL) implantation in the anterior chamber 2–5 ; posterior chamber pIOLs are ...
7
Visual acuity in normal and diseased eyes using high-pass filtered optotypes
... of contrast into different letter strokes and is potentially constrained both by the eye’s optical quality and neural sampling ...by visual neurons and this is determined by the size and spacing of ...
281
Relations of low contrast visual acuity, quality of life and multiple sclerosis functional composite: a cross-sectional analysis
... persistent visual dysfunction is frequent in multiple sclerosis (MS) [1] and is either due to incomplete recovery from optic neuritis (ON) or to rather diffuse damage of the optic pathway that may occur ...
8
Visual acuity and contrast sensitivity of adult zebrafish
... the visual acuity of adult zebrafish by assessing the optokinetic ...or contrast were presented to adult zebrafish. In a first experiment, visual acuity was evaluated by changing the ...
6
Photovoltaic restoration of sight with high visual acuity
... However, it remains to be seen whether retinal rewiring at more advanced stages of degeneration in human subjects will affect the spatial confinement of the stimulation and its thresholds. Spatial frequency cutoff ...
34
<p>Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation</p>
... uncorrected visual acuities of 20/40 or better at 30cm, 40cm, 50cm, 60cm, 70cm, and distance 6 months ...postoperative visual acuities at near, intermediate, and far with the PanOptix Trifocal IOL are ...
8
Kinetic visual acuity is correlated with functional visual acuity at higher speeds
... kinetic visual acuity (KVA) which is the ability to identify approaching objects and the functional visual acuity (FVA) which is continuous VA during 1 min under binocular and monocular ...
6
Visual Acuity of Children
... Percentage of children,”6-11 years, reaching or reaching and exceeding specified acuity levels for uncorrectedmonocular near acuity in the better eye, by aex and age: United Statea, l963[r] ...
42
Visual Acuity and Eye Movements
... ments, i.e. , the eye movement measuring system, and the retinal image stabilization apparatus. Chapter III deals with the behavior of eye movements during simple [r] ...
189
TESTING OF VISUAL ACUITY IN PRESCHOOL CHILDREN
... That no such objective standard exists for preschool children reflects the difficulty of establishing a norm for this group. It is doubt- ful, in view of the many variables to be dis- cu[r] ...
10
The Historical Evolution of Visual Acuity Measurement
... that visual acuity changes with age, Donders asked one of his doctoral students, de Haan, to do a population study, not as an afterthought, but published concurrently with Snellen’s ...
8
The Importance of Measuring Dynamic Visual Acuity
... dynamic acuity is rarely checked in medical examinations, even those preceding the issue of driving ...with visual aids is ...static visual acuity in order to ob- serve how they vary among ...
11