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Abstract #8693 Published in IGR 5-1
Changes in macular thickness and depth of anterior chamber in patients after filtration surgery
Karasheva G; Goebel W; Klink T; Haigis W; Grehn FGraefe's Archive for Clinical and Experimental Ophthalmology 2003; 241: 170-175
BACKGROUND: The prospective study was undertaken to analyze retinal thickness of the macula and anterior chamber depth in patients undergoing filtration surgery at different times of follow-up. METHODS: Forty-four patients (45 eyes) were included. The thickness of the fovea and the extrafoveal retina were measured using optical coherence tomography (OCT). Anterior chamber depth was determined using the IOLMaster. All standard clinical examination and measurements were performed prior to surgery, at the second day (one to three days), one week, one and three months after surgery. RESULTS: Preoperative IOP under topical medication was 25.5 ± 7.5 mmHg. IOP was significantly decreased at all postoperative visits (p < 0.0001): 10.8 ± 5.9 mmHg at the second day, 10.4 ± 5.2 mmHg after one week, 11.7 ± 4.4 mmHg after one month, and 11.4 ± 3.6 mmHg after three months. No patient in the study suffered from prolonged postoperative hypotony (IOP < 5 mmHg). Foveal thickness at the second day, one week and one month were elevated compared to baseline (p < 0.004). Macular thickness changed from 164 ± 20 μm before surgery to 168 ± 20 μm after two days, 170 ± 21 μm after one week, 173 ± 19 μm after one month, and 165 ± 16 μm after three months. Mean thickness of the extrafoveal retina did not change significantly. Neither were there any significant changes in anterior chamber depth. There was no significant correlation between reduction of IOP and retinal thickness or anterior chamber depth. CONCLUSIONS: The reduction of IOP after filtration surgery leads to a moderate increase in foveal retinal thickness over approximately ONE month and is not associated with shallowing of the anterior chamber, provided that prolonged postoperative hypotony is avoided with the surgical technique used.
Dr. G. Karasheva, University Eye Hospital, Josef-Schneider Strasse 11, 97080 Würzburg, Germany. f.grehn@augenklinik.uni-wuerzburg.de
Classification:
12.8.1 Without tube implant (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
