Treatment Cessation in Patients with Diabetic Maculopathy under Intravitreal Anti-VEGF Therapy Following a Treat-and-Extend Protocol.

Objective
To assess the outcomes of treatment cessation due to disease stability in eyes with diabetic macular edema (DME).Design
A single-center, retrospective, consecutive case series.Subjects
Patients with DME who had received their first anti-VEGF treatment between 2012 and 2021, a Snellen best-corrected visual acuity (VA) ≥0.1, and a follow-up of ≥24 months.Methods
Baseline characteristics, best-corrected VA, OCT biomarkers over time, and injection details were collected from patients' medical records. Treatment interruption was defined as a treatment-free interval of ≥25 weeks after the last injection for any reason. An active decision for treatment interruption due to a stable retinal situation was defined as treatment cessation. Data are presented as mean ± standard deviation.Main Outcome Measures
Percentage of patients experiencing treatment cessation, time to treatment cessation and to reuptake, and change in best-corrected VA and central retinal thickness.Results
Beyond 109 eyes treated over ≥24 months, 81 eyes (62 patients) met the inclusion criteria. During a follow-up of 5.5 ± 2.3 (median 5) years, patients received 22.6 ± 14.9 (median 20) intravitreal injections, 7.7 ± 3.0 (8.0) of these in the first year. Fifty-seven eyes (70.4%) experienced ≥1 planned treatment cessation of ≥25 weeks, while 4 eyes experienced an unplanned treatment interruption. Treatment cessation was documented in 53 eyes (65.4%) 65.2 ± 52.4 (median 42) weeks after treatment initiation for 106.2 ± 110.4 (median 54) weeks. The reason for treatment cessation was patient-driven in 1 eye (1.9%; the patient wished to stop treatment against medical advice), physician-driven in 38 eyes (71.7%; stable VA, despite persisting residual retinal fluid in OCT), and OCT-driven in 14 eyes (26.4%; no retinal fluid in OCT). Baseline parameters were comparable between eyes experiencing treatment cessation and those which did not.Conclusions
Treatment cessation was achieved in 70% of eyes with DME after intensive treatment during the first year. This calls for a discussion about a possible systematic assessment of disease stability by omitting a single injection in eyes with stable residual retinal fluid.Financial Disclosures
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.