Effects of isopropyl unoprostone, latanoprost, and prostaglandin E₂ on acute rise of aqueous flare in pigmented rabbits

Purpose: To evaluate the effect of isopropyl unoprostone, latanoprost, and prostaglandin E₂ (PGE₂) on aqueous flare elevation. Methods: Isopropyl unoprostone (0.12%) or latanoprost (0.005%) was topically instilled. Transcorneal diffusion of PGE₂, 25 μg/ml, using a glass cylinder, was achieved in pigmented rabbits. Aqueous flare was measured with a laser flare cell meter. Results: Topical instillation of isopropyl unoprostone induced aqueous flare elevation in rabbit eyes. Also, topical isopropyl unoprostone additionally induced aqueous flare elevation in eyes with transcorneal diffusion of PGE₂. Latanoprost did not induce flare elevation. Conclusion: Isopropyl unoprostone induced aqueous flare elevation in rabbits, and latanoprost did not produce aqueous flare elevation.