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  • Title: Comparison of the intraocular pressure lowering effect of latanoprost and a fixed combination of timolol-pilocarpine eye drops in patients insufficiently controlled with beta adrenergic antagonists. French Latanoprost Study Group, and the Swedish Latanoprost Study Group.
    Author: Nordmann JP, Söderström M, Rouland JF, Malecaze F.
    Journal: Br J Ophthalmol; 2000 Feb; 84(2):181-5. PubMed ID: 10655195.
    Abstract:
    AIMS: To compare the effect on intraocular pressure (IOP) of latanoprost monotherapy and timolol-pilocarpine in patients with glaucoma or ocular hypertension with inadequately controlled IOP on topical beta adrenergic antagonists. METHODS: This was a multicentre, randomised, observer masked, 6 week study performed in France and Sweden. 23 centres enrolled 237 patients with glaucoma or ocular hypertension and an IOP of at least 22 mm Hg on treatment with topical beta adrenergic antagonists, alone or in combination. After a 21 day run in period on timolol 0.5% twice daily, patients were randomised either to latanoprost 0.005% once daily or to a fixed combination of timolol-pilocarpine twice daily. Changes in mean diurnal IOP from the baseline to the 6 week visit were determined with an analysis of covariance. RESULTS: Mean diurnal IOP was statistically significantly decreased from baseline in both groups (p<0.001). Switching to latanoprost treatment reduced mean diurnal IOP by 5.4 (SEM 0.3) mm Hg (ANCOVA -22%) and switching to timolol-pilocarpine treatment reduced mean diurnal IOP by 4.9 (0.4) mm Hg (-20%). Blurred vision, decreased visual acuity, decreased twilight vision, and headache were statistically significantly more frequent in the timolol-pilocarpine group. CONCLUSIONS: Latanoprost monotherapy was at least as effective as fixed combination timolol-pilocarpine twice daily treatment in reducing mean diurnal IOP in patients not adequately controlled on topical beta adrenergic antagonists. Latanoprost was better tolerated than timolol-pilocarpine regarding side effects. These results indicate that a switch to latanoprost monotherapy can be attempted before combination therapy is initiated.
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