Puslapis 1 nuo 20 rezultatus
Purpose: To demonstrate an aniseikonia test for anisometropic amblyopia (ATAA) that uses variable viewing luminance at different interocular contrast levels.
Methods: The test
OBJECTIVE
To study the interrelationships among these four entities which are critical to binocular vision and its precision.
METHODS
102 selected patients (for their ability to have stereoscopic depth perception, a requisite for space eikonometry) were evaluated. Patient testing included
Aniseikonia is a difference in the perceived size or shape of images between eyes, and can arise from a variety of physiological, neurological, retinal, and optical causes. Aniseikonia is associated with anisometropia, as both anisometropia itself and the optical correction for anisometropia can
The treatment of anisometropic or ametropic amblyopia has traditionally enjoyed a high treatment success rate. Early initiation and consistent use of spectacle correction can completely resolve amblyopia in a majority of patients. For those with anisometropic amblyopia that fail to improve with
Following a hypothesis concerning the image-size on the retina the problem is discussed as to which of the various correction methods is to be preferred in the case of severe anisometropia. We treated nine anisometropic patients for amblyopia using contact lens correction. After amblyopia treatment
The rhesus monkey has evolved as a useful model for the study of amblyopia caused by neonatal lid closure and experimental strabismus and anisometropia. In view of the behavioral and anatomic similarities of the visual system in humans and rhesus monkeys, there is reason to believe that the
Contrast sensitivity functions were measured for sinusoidal gratings from a sample of 10 anisometropic amblyopes. A high spatial frequency deficit was found from tests of the amblyopic eyes of all subjects. This defect decreased with spatial frequency and was correlated with the magnitude of
OBJECTIVE
It has been suggested that children perceptually adapt to changes in retinal image size in the presence of anisometropia and therefore do not display clinically significant aniseikonia. However, given that early methods of eikonometry were not child-friendly, the prevalence of this
In cases of high unilateral myopia good prognosis for monocular visual acuity as well as binocular vision is expected if timely and cosistent therapy is administered. Therapy comprises full optical correction, amblyopia therapy, mostly occlusion, squint therapy and possibly fitting of contact
Anisometropia may be responsible for aniseikonia. and anisophoria. In children, aniseikonia may create amblyopia. It is of utmost importance to distinguish axial from refractive anisometropia. When the anisometropia is axial in origin, spectacle lenses constitute the treatment of choice (Knapp's