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Abstract #6080 Published in IGR 2-2
Relative anterior microphthalmos: morphometric analysis and its implications for cataract surgery
Auffarth GU; Blum M; Faller U; Tetz MR; Volcker HEOphthalmology 2000; 107: 1555-1560
PURPOSE: To evaluate morphometric data and risk factors for complications of cataract surgery in patients with relative anterior microphthalmos (RAM). DESIGN: Retrospective, comparative study (part 1) and matched pairs analysis with controls (part 2). PARTICIPANTS: Sixty-two patients with RAM who underwent cataract surgery at the Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Germany, between 1989 and 1997. RAM is defined as eyes with horizontal corneal diameters 20 mm, and no other morphological malformation. MAIN OUTCOME MEASURES: Part 1: patients were examined preoperatively for anterior chamber (AC) depth, lens thickness, total axial length, and refraction. Associated ocular pathological conditions (such as glaucoma or previous surgical interventions) were recorded. Part 2: a matched pairs analysis concerning the anatomical features was performed with a group of 17 patients with RAM and 17 patients (controls) that matched the RAM group in terms of axial length, age, and gender but showed corneal diameters >11 mm. RESULTS: Part 1: anatomical parameters in RAM showed an average corneal diameter of 10.7 ± 0.34 mm, AC depth of 2.20 ± 0.49 mm, and average lens thickness of 5. 05 ± 0.45 mm. Fifty-five percent of the patients had myopic refraction. There was a high incidence of glaucoma (77.4%), cornea guttata (45.2%), and pseudoexfoliation syndrome (16.1%) in the RAM group. Sixty percent of patients had undergone previous glaucoma surgery. After cataract surgery, 51.2% of patients achieved a visual acuity of >20/40 and 69.8% of >20/50. Temporary corneal edema (54.8%) and ciliolenticular block (11.6%) were the most important complications after cataract surgery. Part 2: matched pairs analysis showed significant differences between RAM and controls in terms of AC depth (p = 0.029) but no difference in lens thickness (p = 0.12). CONCLUSIONS: Relative anterior microphthalmos can be characterized in terms of morphometric data as eyes with corneal diameters
Dr. G.U. Auffarth, Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
Classification:
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
9.3 Primary angle closure glaucomas (Part of: 9 Clinical forms of glaucomas)
12.12 Cataract extraction (Part of: 12 Surgical treatment)
