Effect of lens opacity on the glaucomatous field of vision.
OBJECTIVE
To assess the effect of cataract on the glaucomatous visual field.


METHODS
We prospective y assessed the visual field indices of mean deviation (MD), pattern standard deviation (PSD), short-term fluctuation (SF) and corrected pattern standard deviation (CPSD) before and after cataract extraction with posterior chamber intra-ocular lens in a consecutive series of 40 patients (51 eyes) age 75.0 +/- 6.0 years with varying degrees of field oss or suspect field loss.


RESULTS
After cataract operation, statistical analysis showed a very significant fall in the absolute magnitude of MD and a significant rise n PSD. There was considerable individual variation in results.


CONCLUSIONS
Taking these changes into account, the indices gave a good prediction of the glaucomatous field status following cataract operation, which itself results in some increase in the underlying field defect.
Gillies
W E
WE
The Royal Victorian Eye and Ear Hospital, Melbourne, Australia. abrooks@medeserv.com.au
Brooks
A M
AM
D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000503:physiopathology*; D002387:Cataract Extraction; D005260:Female; D005901:Glaucoma / Q000503:physiopathology*; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D058609:Visual Field Tests; D014794:Visual Fields