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Effect of topical atropine on intraocular pressure and pupil diameter in the normal horse eye
Author(s) -
Mughannam Albert J.,
Buyukmihci Nedim C.,
Kass Philip H.
Publication year - 1999
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1046/j.1463-5224.1999.00081.x
Subject(s) - atropine , intraocular pressure , atropine sulfate , glaucoma , medicine , anesthesia , horse , ophthalmology , parasympatholytic , pupil , biology , muscarinic acetylcholine receptor , paleontology , receptor , neuroscience
The objective was to determine whether topically administered 1% atropine would alter intraocular pressure. The animals studied were four healthy adult horses. Intraocular pressure and pupil diameter were measured prior to and during a 2‐day period of treatment with 1% atropine sulfate. No significant changes in intraocular pressure occurred as a result of the treatment with atropine. Pupil diameter increased significantly after atropine was applied. Available information on the outflow of aqueous humor from the horse eye suggests that atropine might reduce intraocular pressure in the horse by increasing uveoscleral outflow. This could prove beneficial in the treatment of equine glaucoma. We could not confirm a significant pressure‐lowering effect of atropine. It is possible, however, that a longer treatment period may be required or that atropine may have a more profound effect on glaucomatous globes.