Treatment of children with amblyopia by perceptual learning.

Recent studies have shown that perceptual learning has the potential to treat amblyopia. In this study we tested whether a recent perceptual learning technique that improved visual functions in adults can be applied to improve the vision of children after the conventional treatment of patching has failed. A prospective clinical pilot study was carried out in children who were non-compliant with patching or in whom patching had failed despite good compliance.

Spatial interactions in amblyopia: effects of stimulus parameters and amblyopia type.

Adults with amblyopia were recently shown to perform abnormally in tasks requiring integration of local features into global percepts. Moreover, spatial interactions in amblyopic patients, though often found to be abnormal, showed marked variability. Here we measured collinear lateral interactions using Gabor patches in a large number of amblyopic (N=75) and normal subjects (N=25), testing four spatial frequencies (1.

Improving vision in adult amblyopia by perceptual learning.

Practicing certain visual tasks leads, as a result of a process termed "perceptual learning," to a significant improvement in performance. Learning is specific for basic stimulus features such as local orientation, retinal location, and eye of presentation, suggesting modification of neuronal processes at the primary visual cortex in adults. It is not known, however, whether such low-level learning affects higher-level visual tasks such as recognition.

Early postoperative intraocular pressure pattern in glaucomatous and nonglaucomatous patients.

Purpose: To evaluate intraocular pressure (IOP) changes in the 24 hours following cataract extraction in glaucomatous and nonglaucomatous patients.

Setting: General Eye Service and Glaucoma Service of the Goldschleger Eye Institute, Tel Hashomer, Israel.

Methods: Twenty-six nonglaucomatous patients and 13 glaucomatous patients scheduled for routine cataract extraction and intraocular lens implantation were evaluated.