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Published on: April 24, 2020
Intraocular pressure and visual field damage as risk factors for visual field progression in filtering surgery
John S Cohen1, Gary D Novack, Jeffrey M Zink
1Cincinnati Eye Institute, 1945 CEI Drive, Cincinnati, OH 45242, USA.
Background And Objective:
To evaluate the relationship between preoperative visual field severity and postoperative intraocular pressure as risk factors for visual field progression.
Patients And Methods:
Patients undergoing trabeculectomy (TRAB, n = 92 eyes of 73 patients) or combined trabeculectomy and cataract extraction by phacoemulsification (COMBO, n = 49 eyes of 41 patients) by one surgeon with at least 6 months of follow-up were reviewed.
Results:
Both the COMBO and TRAB treatment groups experienced a substantial decrease in mean intraocular pressure (4.7 +/- 6.0 and 10.1 +/- 6.5 mm Hg) and mean number of ocular hypotensive medications (1.8 +/- 1.2 and 2.2 +/- 1.5), respectively. In the subset of 47 eyes with reliable visual fields, the COMBO group experienced a mean improvement in mean deviation of 2.75 dB, and the TRAB group experienced only minimal changes in visual fields.
Conclusion:
In general, visual fields did not worsen following trabeculectomy or combined surgery.
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