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Does laser trabeculoplasty prevent steroid glaucoma?

M A Galin¹, H Hirschman, H Gould

¹Department of Polymer Chemistry, University of Massachusetts, Lowell, USA.

Ophthalmic Surgery and Lasers

|April 1, 2000

Summary

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Laser trabeculoplasty did not prevent increased intraocular pressure from steroid eye drops in myopic patients who had radial keratotomy. This suggests alternative strategies are needed to manage steroid-induced ocular hypertension in this population.

Area of Science:

Ophthalmology
Surgical Innovation
Pharmacology

Background:

Radial keratotomy is a refractive surgery for myopia.
Steroid eye drops are commonly used post-surgery.
Steroids can increase intraocular pressure (IOP), a risk factor for glaucoma.

Purpose of the Study:

To determine if laser trabeculoplasty affects steroid-induced IOP elevation.
To assess IOP response in myopic patients after radial keratotomy and dexamethasone treatment.

Main Methods:

Diode laser trabeculoplasty was performed on 94 myopic patients undergoing radial keratotomy.
Patients received dexamethasone eye drops post-procedure.
Intraocular pressure was measured using applanation tonometry, adjusted for corneal flattening.

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Main Results:

Twenty-eight percent of patients experienced an IOP increase of 6 mm Hg or more by week four.
Laser trabeculoplasty did not significantly alter the incidence of steroid-induced IOP elevation.

Conclusions:

Laser trabeculoplasty is ineffective in preventing steroid-induced IOP increase in myopic eyes post-radial keratotomy.
Management of steroid-induced ocular hypertension requires further investigation in this patient group.