Effect of cataract extraction on SITA perimetry in patients with glaucoma.
OBJECTIVE
To evaluate the effect of cataract extraction on Swedish Interactive Thresholding Algorithm (SITA) perimetry in patients with coexisting cataract and glaucoma.


METHODS
This is a retrospective noncomparative interventional study. Thirty-seven consecutive patients with open-angle glaucoma who had cataract extraction alone or combined with trabeculectomy were included. All patients had SITA-standard 24-2 visual fields before and after the surgery. The main outcome measures were changes in mean deviation (MD) and pattern standard deviation (PSD). Additionally, changes in best-corrected visual acuity, intraocular pressure, and number of glaucoma medications were also studied.


RESULTS
Visual field tests were performed 3.9+/-4.4 months before surgery and 4.1+/-2.8 months after surgery. Mean visual acuity improved after the surgery, from 0.41+/-0.21 to 0.88+/-0.32 (P<0.001). After cataract extraction, SITA-standard mean MD improved from -12.3+/-5.8 to -11.1+/-6.3 (P=0.023), whereas the change in mean PSD was statistically nonsignificant (from 7.2+/-3.0 to 7.3+/-3.6; P=0.84).


CONCLUSIONS
In glaucoma patients examined with SITA-standard, MD improved but PSD change was statistically nonsignificant, after the cataract surgery. SITA-standard PSD can be used to monitor glaucoma progression in patients with coexisting glaucoma and cataract.
Rehman Siddiqui
M A
MA
Department of Ophthalmology, NHS Grampian, United Kingdom.
Khairy
Hany A
HA
Azuara-Blanco
Augusto
A
D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D002386:Cataract / Q000503:physiopathology; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D012189:Retrospective Studies; D014130:Trabeculectomy; D014786:Vision Disorders / Q000175:diagnosis*; D014792:Visual Acuity; D058609:Visual Field Tests; D014794:Visual Fields