The effect of Bangerter filters on optotype acuity, Vernier acuity, and contrast sensitivity.

ABSTRACT:

Purpose

Bangerter filters are designed to cause progressive degradation of distance optotype acuity to predicted levels (density label indicating expected decimal acuity) and are used to treat amblyopia and diplopia. Few authors have reported data regarding induced acuity deficits. We investigated the effect of Bangerter filters on distance and near optotype acuity, vernier acuity, and contrast sensitivity.

Methods

Fifteen subjects with best-corrected optotype acuity of at least 20/25 in each eye were blurred sequentially in one eye with 7 Bangerter filters (densities <0.1, 0.1, 0.2, 0.3, 0.4, 0.8, and 1.0). At each filter level, distance and near optotype acuity (LogMAR), vernier acuity, and contrast sensitivity were assessed. Mean log acuities were compared using generaliz

SUBMITTER: Odell NV 

PROVIDER: S-EPMC3258514 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature