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  • Title: Cataract formation and other complications of intravitreal triamcinolone for macular edema.
    Author: Thompson JT.
    Journal: Am J Ophthalmol; 2006 Apr; 141(4):629-37. PubMed ID: 16564796.
    Abstract:
    PURPOSE: To evaluate complications and results of intravitreal triamcinolone acetonide for treatment of macular edema. DESIGN: Interventional, consecutive, retrospective case series. METHODS: Ninety-three eyes with macular edema arising from retinovascular etiologies were treated with 4 mg intravitreal triamcinolone. Eyes were monitored after injection for visual acuity changes and complications, including cataract formation and increase in intraocular pressure (IOP). Cataract progression was analyzed by linear regression analysis of lens scores from lens opacity standards. RESULTS: The mean visual acuity improved from 20/125 to -1 to 20/100 + 2 by one to two months after injection (P < .001) and was 20/100 at the final examination (P = .006) at a mean of 1.2 years after injection. Complications included a severe, culture-negative inflammatory reaction in one eye (1.1%). IOP increased to 30 mm Hg or more in nine (9.7%) of 93 eyes between 1 and 140 days after injection and was more frequent in eyes receiving one or more preinjection glaucoma drops (two of 13 eyes, 15.4%, vs seven of 80 eyes, 8.75%, without preinjection glaucoma drops). Nuclear sclerosis increased at a rate of 0.175 U per year, posterior subcapsular cataracts at 0.423 U per year, and cortical cataracts at 0.045 U per year. Posterior subcapsular cataract increased by > or = 1 U or required cataract surgery in 45.2% of eyes followed at least one year. CONCLUSIONS: Intravitreal triamcinolone improves visual acuity in most eyes but eyes must be monitored carefully for increase in IOP. Posterior subcapsular cataract formation becomes visually significant in almost half of eyes by one year after injection.
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