Purpose: To investigate the effects of switching to SofZia-preserved travoprost (TRV) on superficial punctate keratopathy (SPK) observed in patients using benzalkonium chloride (BAC)-preserved latanoprost (LAT).
Methods: Patients with either primary open-angle glaucoma or ocular hypertension treated with LAT for at least 1 month who presented with SPK participated in this prospective, multicenter, open-label uncontrolled study. After the switch from LAT to TRV, patients were monitored at 2 weeks and at 1, 2, and 3 months. The use of concomitantly employed ophthalmic solutions was continued during the observation period. The intensity of SPK in each of five areas defined on the cornea was scored on a standard scale. Repeated measurements were tested with a linear mixed model.
Results: Of the 48 patients enrolled, 45 patients completed the study. After the switch to TRV, the mean SPK score in the whole cornea decreased significantly at every observation point (P < 0.0001 at each point) while intraocular pressure did not change significantly. Throughout the observation period, the SPK score tended to be higher in patients using a larger number of concomitant medications that contained BAC.
Conclusion: Switching to TRV improved SPK observed in a population using LAT, likely because of a decrease in exposure to BAC.
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| http://dx.doi.org/10.1007/s10384-009-0754-8 | DOI Listing |
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