Aims: To evaluate the early functional and anatomical responses to intravitreal pegaptanib in patients with retinal angiomatous proliferation (RAP).
Methods: Retrospective review of consecutive patients newly diagnosed with RAP treated with intravitreal pegaptanib (0.3 mg). Examination at baseline and 12 weekly intervals included refraction protocol best corrected visual acuity (BCVA), fluorescein angiography (FA), and optical coherence tomography (OCT). At intervening 6 weekly visits a reduced protocol assessment included BCVA and OCT.
Results: A total of 16 eyes of 16 patients (12 female, mean age 76.0 years) with RAP at baseline (15 stage 3, one stage 2) were treated. One patient had poor response, losing 20 ETDRS letters after one injection and was switched to photodynamic therapy combined with intravitreal triamcinolone. Mean BCVA (n=15) was baseline 45+/-11 (mean+/-SD) letters, 12 weeks 43+/-14 letters, 24 weeks 40+/-14 letters; the reduction from baseline to 24 weeks was statistically significant (P=0.04). Vision remained stable defined as +/-15 letters of baseline BCVA in 13 (87%) of patients 2 (13%) lost >15 letters. Mean OCT central foveal thickness (CFT) (n=13) was: baseline 325+/-123 microm, 12 weeks 343+/-130 microm, 24 weeks 321+/-115 microm; difference at 24 weeks was not statistically significant (P=0.9). A pigment epithelial detachment was present in 12 cases; height was reduced in 10 cases at 24 weeks. Persistent leakage on FA was seen in 13 out of 15 cases at 24 weeks.
Conclusion: Early results of treatment of RAP with intravitreal pegaptanib suggest some stabilizing effect on this normally progressive disease.