Τίτλος:
Contrast sensitivity in amblyopia: The fellow eye of untreated and
successfully treated amblyopes
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Purpose: We sought to investigate contrast sensitivity on the fellow
eyes of amblyopic and successfully treated amblyopic subjects. Methods.
Contrast sensitivity was tested monocularly on both eyes of 48 amblyopic
patients (mean age, 11.51 years) and of 22 successfully treated
amblyopic subjects (visual acuity 20/20 in each eye; mean age, 11.22
years). Inclusion criteria were visual acuity in the amblyopic eye 20/40
or better (mild amblyopia) and 20/20 or better in the fellow eye, steady
fixation, no signs of congenital, latent or manifest/latent nystagmus on
clinical examination. Twenty normal subjects (20 eyes) were used as
age-matched controls. Results: Contrast sensitivity functions from the
fellow eye of the 48 amblyopic patients, even those who had never been
treated with occlusion therapy before, were significantly decreased (P <
0.001) compared with control subjects. Both the previously amblyopic and
the fellow eye of the 22 “cured” amblyopic subjects demonstrated
significantly lower values (P < 0.001) compared with control patients.
Conclusions. We suggest that the nonamblyopic, “normal” eye of
amblyopic patients behaves abnormally when evaluated for contrast
sensitivity functions. Neither the previously amblyopic nor the fellow
eyes of successfully treated subjects were comparable with controls.
Occlusion therapy may not be implicated for depressed contrast
sensitivity of the fellow eye in amblyopia. The assessment of contrast
sensitivity can provide important information on the visual function and
the influence of occlusion therapy in amblyopia.
Συγγραφείς:
Chatzistefanou, KI
Theodossiadis, GP
Damanakis, AG
Ladas, ID
and Moschos, MN
Chimonidou, E
Περιοδικό:
Journal of AAPOS (Journal of the American Association for Pediatric Ophthalmology and Strabismus)
DOI:
10.1016/j.jaapos.2005.05.002
