Effect of cataract extraction on SITA perimetry in patients with glaucoma

M. A. Rehman Siddiqui, Hany A. Khairy, Augusto Azuara-Blanco

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


PURPOSE: To evaluate the effect of cataract extraction on Swedish Interactive Thresholding Algorithm (SITA) perimetry in patients with coexisting cataract and glaucoma. PATIENTS AND 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.

Original languageEnglish
Pages (from-to)205-208
Number of pages4
JournalJournal of Glaucoma
Issue number2
Publication statusPublished - Mar 2007
Externally publishedYes


  • Cataract
  • Glaucoma
  • SITA
  • Visual fields


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