Journal
ARCHIVES OF OPHTHALMOLOGY
Volume 125, Issue 10, Pages 1345-1350Publisher
AMER MEDICAL ASSOC
DOI: 10.1001/archopht.125.10.1345
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Objective: To investigate the effect of dorzolamide hydrochloride on central corneal thickness in humans with cornea guttata. Design: Randomized, placebo- controlled, doublemasked, 2- drug crossover study with 10 patients with cornea guttata and 10 healthy controls, who had mean endothelial cell counts of 988 and 2377 cells/ mm(2), respectively. Study medications were 2% dorzolamide and placebo drops applied 3 times a day for 4 weeks. Central corneal thickness measurements using ACMaster ( Carl Zeiss Meditec AG, Jena, Germany) and Goldmann applanation tonometry were performed at baseline, 1 day, 1 week, and 4 weeks. Results: The mean increases in central corneal thickness after 4 weeks in eyes with cornea guttata treated with dorzolamide and placebo were 26.3 mu m ( 95% confidence interval, 8.8 to 43.7) and 3.3 mu m ( 95% confidence interval, - 0.5 to 7.1), respectively. No statistically significant changes were measured in the healthy control group. Dorzolamide caused a significant decrease in intraocular pressure ( P <. 01) while placebo did not cause significant changes ( P=. 50). Conclusion: Application of dorzolamide for 4 weeks resulted in a statistically significant increase in central corneal thickness in patients with compromised corneal endothelium. These results indicate that patients with corneal endothelial problems receiving dorzolamide therapy should be monitored.
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