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Central corneal thickness during treatment with travoprost 0.004% in glaucoma patients
Torsten Schlote1, Argyrios Tzamalis, Myron Kynigopoulos
1Outpatient Clinic of Ophthalmology Ambimed, Basel, Switzerland. tschlote@bluewin.ch
Purpose:
Experimental studies demonstrated an alteration of corneal collagen structure by prostaglandin analogues. The possible effect of the prostaglandin F(2alpha) analogue travoprost 0.004% on the central corneal thickness (CCT) in newly diagnosed glaucoma patients was evaluated.
Methods:
Consecutive, interventional case series. Seventy-four patients/136 eyes with glaucoma were included in the statistical analysis. All patients received travoprost 0.004% (Travatan(R)) once daily in one or both eyes. CCT was measured by using noncontact optical low-coherence reflectometry prior to the treatment and after 6 and 12 months.
Results:
Mean CCT of all treated eyes (n = 136) was 546.71 +/- 34.63 mum at baseline, 535.14 +/- 34.78 mum after 6 months, and 532.38 +/- 34.18 mum after 12 months (ANOVA, P < 0.001). Ninety-five percent of all treated eyes showed a decrease of CCT. CCT reduction mainly developed within the first 6 months of the treatment period. After 12 months, a CCT reduction >30 mum occurred in 5.1% of all treated eyes. There was a significant correlation between the magnitude of corneal thinning and the initial CCT but not between corneal thinning and IOP reductions.
Conclusions:
Topical therapy with the prostaglandin derivate travoprost is accompanied by a significant reduction of CCT within one year of treatment. Further clinical studies are needed to evaluate the possible long-term effects of prostaglandins on the CCT of glaucoma patients.
Insights
Travoprost eye drops significantly reduced central corneal thickness (CCT) in glaucoma patients over 12 months. Most eyes showed thinning, primarily within the first six months of treatment.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Corneal Physiology
Background:
- Prostaglandin analogues are known to alter corneal collagen structure.
- Glaucoma treatment requires careful monitoring of ocular parameters.
Purpose of the Study:
- To evaluate the effect of travoprost 0.004% on central corneal thickness (CCT) in newly diagnosed glaucoma patients.
- To investigate changes in corneal thickness following topical prostaglandin therapy.
Main Methods:
- A consecutive, interventional case series included 74 patients (136 eyes) with glaucoma.
- Patients received travoprost 0.004% once daily.
- Central corneal thickness (CCT) was measured using optical low-coherence reflectometry at baseline, 6 months, and 12 months.
Main Results:
- Mean CCT decreased significantly from 546.71 ± 34.63 µm at baseline to 532.38 ± 34.18 µm after 12 months (P < 0.001).
- Ninety-five percent of treated eyes showed a reduction in CCT, with most thinning occurring within the first six months.
- A significant correlation was observed between the magnitude of corneal thinning and the initial CCT.
Conclusions:
- Topical travoprost therapy leads to a significant reduction in CCT within one year.
- Further research is necessary to understand the long-term effects of prostaglandins on corneal thickness in glaucoma patients.
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