Treatment of amblyopia using a CAM vision stimulator

Abstract

Therapy with the CAM Vision Stimulator was given in 55 patients with amblyopia who had been referred for pleoptic treatment. Most of them had received conventional occlusion therapy and six even pleoptic therapy without any improvement. The age range was 6-14 years. The examination of visual acuity was given special consideration. Line visual acuity was examined with an E chart on which the direction of the signs could be altered to eliminate memorizing and where the spaces between the signs and lines could be logarithmically reduced. Single visual acuity was examined with single E tests and near acuity with Jaeger's chart. The number of treatment sessions varied from six to 29. averaging 15.6. The change in line, single and near vision acuity was always parallel. In 76% of the patients a line acuity of ≥ 0.5 was achieved. In 71% of the patients line acuity was improved by at least two lines. The therapeutic result was of the same magnitude in all age groups. The correlation with initial vision was clear. The line acuity of 0.05 did not improve and even in the 0.1 group improvement was only slight. The groups of anisometric amblyopia and strabismic amblyopia reacted in the same way to the therapy. The method proved useful and easy to apply in the treatment of amblyopic patients aged six years or older.