Quantitation of metamorphopsia. Method of evaluation Chota Matsumoto 1 , Shunji Tsuboi 1 , Sachiko Okuyama 2 , Koji Uyama 2 , Toshifumi Otori 2 1Tane Memorial Eye Hosp 2Dept of Ophthalmol, Kinki Univ Sch of Med pp.271-274
Published Date 1990/3/15
DOI https://doi.org/10.11477/mf.1410908077
  • Abstract
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We developed a new method to quantitate metamorphopsia with the use of personal computer and cathode-ray tube (CRT). A series of 48 targets were consecutively presented on the CRT within the field of 6 degrees from the fixating point. Each target was compared with the reference target presented at the point of fixation. The examine was asked to change the size of the target until the twotargets were recognized as equal in size. The ratio of projected versus fixed target was defined to express the value for metamorphopsia, or microp-sia ratio.

We applied this method to 30 normal eyes and to eyes with macular lesions. The observed values in pathologic eyes tended to micropsia when the affected retinal area was edematous. The tended to macropsia where the retina was cicatricial. Our present method seemed to be of value for quantita-tive mapping of metamorphopsia.

Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.


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