[Vision-astigmatometer and methods of its use].
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.
Dashevskiĭ
A I
AI
Kirrilov
Iu A
IuA
D001251:Astigmatism / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D014787:Vision Tests / Q000295:instrumentation
Vizoastigmetr i metodika eto primeneniia.