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.
The Royal Victorian Eye and Ear Hospital, Melbourne, Australia. abrooks@medeserv.com.au
W E
WE
Gillies
A M
AM
Brooks
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