Prospective, Randomized, Single-blind Controlled Trial of Topical Prostaglandin Analogue Washout Following Chronic Monotherapy in Adults With Suspected or Proper Primary Open Angle Glaucoma

Detailed Summary

A target for glaucoma treatment is the intra-ocular pressure (IOP) which is lowered with medications, laser, or surgical intervention. The efficacy of different medication classes is well understood as their IOP lowering effects have been well documented. However, beyond the basic biochemical and pharmacokinetic actions, long-term effects of these drugs on IOP have not been adequately studied. Specifically, does long-term use of anti-glaucoma medications have lasting effects on IOP even with subsequent discontinuation of the medication? In Ontario, prostaglandin analogues are the most frequently prescribed first line anti-glaucoma medication. In our study, we examine the lingering IOP-reducing effects of the prostaglandin analogue anti-glaucoma drug class. Our overall objective is to determine if patients previously treated with prostaglandin analogues remain within acceptable treatment ranges 6 weeks after medication discontinuation, and if this IOP differs from pre-treatment baseline values. Half of participants will discontinue their prostaglandin analogue (PGA) treatment for 6 weeks, while the other half will continue their PGA therapy as prescribed by their ophthalmologist. Both groups will be followed closely throughout the 6 weeks to monitor changes in IOP. This can help us understand the lasting effects of medication use and can help better guide clinical care in optimizing glaucoma management, and help direct study designs of future research that involve any therapy secondary to prostaglandin analogue treatment.

Study Details

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Interventions