Prognostic factors for visual acuity improvement after intravitreal triamcinolone injection

Area of Science:

• Ophthalmology
• Retinal Diseases
• Medical Treatments

Background:

• Intravitreal triamcinolone acetonide injection (IVTA) is used for macular edema.
• Visual acuity may not improve despite anatomical and angiographic resolution of edema.
• Potential side effects include increased intraocular pressure and cataract formation.

Purpose of the Study:

• To identify prognostic factors for visual acuity improvement following IVTA in patients with macular edema.
• To differentiate predictors of successful visual outcome from anatomical improvement.

Main Methods:

• Retrospective review of 57 eyes treated with IVTA for macular edema.
• Categorization of visual acuity improvement as "improved" (≥2 lines gained) or "nonimproved" at 3 months.
• Analysis of demographic, clinical, and fluorescein angiographic data.

Main Results:

• Overall, 47% of eyes showed improved visual acuity after IVTA.
• Eyes with cystoid macular edema (CME) or pseudophakia had significantly better visual acuity improvement.
• No significant difference in visual acuity improvement was observed based on the etiology of macular edema or initial visual acuity.

Conclusions:

• Pseudophakia and the presence of cystoid macular edema (CME) are positive prognostic indicators for visual acuity improvement after IVTA.
• Macular edema etiology and baseline visual acuity are not predictive of visual outcome.
• These findings aid in patient selection and expectation management for IVTA treatment.