Interocular differences in optic disc configuration in the unilateral exfoliation syndrome.
Thirty-seven patients with normal visual fields and open angles in both eyes, and lens exfoliation in only one eye, were examined for intraocular pressure, and optic disc topography was determined from stereophotographs of the fundi with the computerized three-dimensional image analyzer. The rim-to-disc radius ratios at intervals of 30 degrees were obtained with the instrument. The mean intraocular pressure of the exfoliative eyes (17.5 +/- 2.9 mmHg) was significantly higher than that of the nonexfoliative eyes (15.9 +/- 2.8 mmHg). In the exfoliative eyes, the mean rim-to-disc radius ratio at the inferior-temporal was significantly smaller, and the higher the intraocular pressure of the exfoliative eye in comparison with that of the nonexfoliative eye, the smaller were the rim-to-disc radius ratios at the inferior-temporal and inferior radii. In the exfoliative eyes, pressure-dependent changes are observable in the inferior and inferior-temporal areas of the optic disc prior to visual field loss.
Tomita
G
G
Department of Ophthalmology, Helsinki University Central Hospital, University of Helsinki, Finland.
Puska
P
P
Raitta
C
C
D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D017889:Exfoliation Syndrome / Q000473:pathology*; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology*; D010781:Photography