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Grating and recognition acuities of young amblyopes
M J Moseley1, A R Fielder, J R Thompson
1Department of Ophthalmology, University of Leicester, Leicester Royal Infirmary.
The British Journal of Ophthalmology
|January 1, 1988
Summary
This study found good agreement between grating acuity cards and conventional tests for measuring visual acuity in young amblyopes. The adapted grating acuity card procedure shows promise for clinical use in assessing amblyopia.
Area of Science:
- Ophthalmology
- Vision Science
Background:
- Amblyopia, or 'lazy eye', affects visual acuity.
- Conventional visual acuity tests and grating acuity tests are used for diagnosis.
Purpose of the Study:
- To compare visual acuity estimates from conventional tests and an adapted grating acuity card procedure in young amblyopes.
- To evaluate the clinical utility of the grating acuity card procedure.
Main Methods:
- 36 young amblyopes underwent visual acuity testing using both conventional recognition tests and an adapted grating acuity card procedure.
- Grating acuity was assessed using both vertical and horizontal gratings.
Main Results:
- A considerable agreement was found between the two methods for estimating visual acuity.
- Grating acuity estimates did not significantly differ between vertical and horizontal gratings.
- No significant difference was observed between detecting gratings and discriminating target orientation.
Conclusions:
- The adapted grating acuity card procedure demonstrates good agreement with conventional methods for assessing visual acuity in amblyopia.
- This procedure is a potentially valuable tool for clinical assessment of amblyopia.