Purpose: To compare intravitreal recombinant tissue plasminogen activator (rt-PA) treatment with and without gas injection in patients with submacular haemorrhage associated with age-related macular degeneration.
Methods: We conducted a retrospective, non-randomized comparative case study of 110 eyes from 76 women and 34 men (mean age 78.1 ± 6.9 years). Evaluations of the data were performed for baseline visit (t1), and visits 1–3 weeks (t2), 3 months (t3) and 6 months after (t4). The patients were classified according to gas treatment into group A (without gas, n = 46) and group B (with gas, n = 64) and according to rt-PA-dosage into group A1 and B1 (50 μg), group A2 and B2 (100 μg), and group A3 and B3 (200 μg).
Results: At t4, the patients in group A had a median increase of 0.4 logMAR, and those in group B had a decrease of 0.1 logMAR (p = 0.183). The best corrected visual acuity (BCVA) remained stable or increased in 55% and 62% of patients in groups A and B, respectively (p = 0.151), in 50% and 68% of patients in groups A1 and B1, respectively (p = 0.620), in 40% and 100% of patients in groups A2 and B2, respectively (p = 0.250), and in 75% and 63% of patients in groups A3 and B3, respectively (p = 0.463). Complications were observed in 13.6% of patients.
Conclusions: Best results were obtained in patients treated with 50 and 100 μg of rt-PA and in those cases BCVA development was more beneficial if additional gas was injected.