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Vestn Oftalmol ; 107(1): 46-50, 1991.
Article in Russian | MEDLINE | ID: mdl-2035206

ABSTRACT

A combination of astigmatic figures with black strips in different directions every 45 degrees and of two mutually perpendicular figures combined with an angle on a rotating disk on the front side of the astigmatometer and a combination of an angle and visometric cross of Landolt's optotypes on its back side with the similar disk, and a table of optotypes on the same side is suggested, that was tried in clinic. The directions of optotype ring ruptures are situated in 8 meridians. The front side of the astigmatometer shows a scheme for vector analysis of lenticular astigmatism. The method employed by the authors simplifies and accelerates the investigation, making unnecessary clouding and use of cross cylinders.


Subject(s)
Astigmatism/diagnosis , Vision Tests , Diagnosis, Differential , Humans , Vision Tests/instrumentation
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