Visual outcome and treatment frequency of anti-vegf therapy using the treat-and-extend and treatment cessation regimen for exudative age-related macular degeneration and pachychoroid neovasculopathy

Abstract

Purpose: To report the results of anti-vascular endothelial growth factor (VEGF) therapy using treat-and-extend (TAE) and treatment cessation regimens for exudative age-related macular degeneration (AMD) and pachychoroid neovasculopathy (PN). Methods: We retrospectively studied 101 treatment-naïve eyes of 101 patients with exudative AMD and PN that underwent anti-VEGF therapy using TAE and treatment cessation regimen with a follow-up period of ≥12 months. Best-corrected visual acuity (BCVA), treatment fre-quency, and number of eyes with successful treatment cessation were measured. Successful treatment cessation was defined as dry macula retention without treatment for >16 weeks after the last injections. Factors related to the successful treatment cessation were evaluated. Results: BCVA was maintained at the last visit with a mean follow-up period of 49.9 ± 26.9 months. The injection number decreased from 6.8 ± 2.31 at the first year to 3.7 ± 3.64 at the fifth year. At the last visit, 48 (47.5%) eyes were being treated at an interval of ≥12 weeks or were under treatment cessation. Successful treatment cessation during the follow-up period and at the last visit were achieved in 56 (55.4%) and 27 (26.7%) eyes, with a median treatment-free period of 66 and 126 weeks, respectively. Good early treatment response and a small recurrence number were associated with successful treatment cessation at the last visit. Conclusion: Patients with good early response to treatment and fewer recurrences may achieve treatment cessation. This information could help physicians predict the achievement of treatment cessation for a considerable period.