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Intravitreal triamcinolone versus laser photocoagulation for persistent diabetic macular oedema
Z K Ockrim1, S Sivaprasad, S Falk
1Royal Alexander Hospital, Corsebar Road, Paisley PA2 9PN, UK. zoe_ockrim@hotmail.com
The British Journal of Ophthalmology
|April 19, 2008
Summary
Repeated intravitreal triamcinolone injections did not improve visual acuity compared to laser therapy for persistent diabetic macular edema. This study found no significant benefit for triamcinolone in treating chronic diabetic macular edema.
Area of Science:
- Ophthalmology
- Retinal Diseases
- Diabetic Retinopathy
Background:
- Diabetic macular edema (DME) is a leading cause of vision loss in diabetic patients.
- Persistent DME after laser therapy requires further treatment options.
- Intravitreal corticosteroid injections are being explored for DME management.
Purpose of the Study:
- To compare the efficacy of repeated intravitreal triamcinolone (TA) versus conventional laser therapy for persistent diabetic macular edema.
- To evaluate visual acuity outcomes at 12 months post-treatment.
Main Methods:
- A prospective randomized controlled trial involving 88 eyes with persistent DME.
- Patients received either intravitreal triamcinolone (4 mg) or laser photocoagulation.
- Primary endpoint: proportion of patients with ≥15 ETDRS letter improvement at 12 months.
Main Results:
- No significant difference in visual acuity improvement between TA (4.8%) and laser (12.2%) groups (p=0.265).
- Mean visual acuity remained stable in both groups.
- Triamcinolone showed a greater reduction in macular thickness but required more ocular antihypertensives.
Conclusions:
- Repeated intravitreal triamcinolone does not offer a significant visual acuity benefit over conventional laser therapy for chronic DME.
- While TA reduced macular thickness, the increased need for IOP management limits its advantage.
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