| Popis: |
The renewed interest which has been aroused of late concerning the alleviation of concomitant strabismus and the enhancement of the visual acuity in eyes with amblyopia ex anopsia has brought forth some novel apparatus with which the practicing ophthalmologist should be familiar. The purpose of this article is to review the older devices which are still held in high esteem and to describe the modern instruments with their equipment. AMBLYOPIA EX ANOPSIA The consensus concerning those eyes in which visual acuity is so greatly decreased below normal that ordinary pictures used in fusion instruments are not recognizable is that absolute occlusion is necessary. This fact has long been known, for as early as 1743 Buffon suggested it, and Javal, in 1856, reported cures by occlusion. Worth was emphatic in his statement published in 1903, to the effect that the primary object to be kept in mind is to prevent |
