Treatment for neovascular age-related macular degeneration in Sweden: outcomes at seven years in the Swedish Macula Register

Acta Ophthalmol. 2017 Dec;95(8):787-795. doi: 10.1111/aos.13539. Epub 2017 Aug 21.

Abstract

Purpose: To present Swedish Macula Register (SMR) data regarding treatment of neovascular age-related macular degeneration (AMD) in clinical practice since 2008.

Methods: A retrospective register-based study was conducted. Evaluation of baseline demographics, visual outcome and number of injections during this period is presented.

Results: Mean age at diagnosis was 79 ± (SD) 8 years; 65% were female. The proportion of patients with <2 months' duration of symptoms increased from 26% in 2008 to 41% in 2014 (p = 0.001). Mean visual acuity (VA) at baseline increased from 54.3 ± 15.0 early treatment diabetic retinopathy study (ETDRS) letters in 2008 to 57.8 ± 15.6 letters in 2014 (CI95 2.6; 4.3; p < 0.001). Mean VA after 1 year of treatment increased from 57.8 ± 17.7 ETDRS letters for patients who started the treatment in 2008 to 62.8 ± 16.4 ETDRS letters in patients starting treatment in 2014 (CI95 2.67; 4.64; p < 0.001). During all study years, the proportion of patients with an improvement in VA of between 5 and 15 letters was around 30%, while 14% had VA improvement of more than 15 letters. The mean number of injections during the first treatment year increased from 4.3 ± 1.9 in 2008 to 5.9 ± 2.9 in 2014 (CI95 1.40; 1.67; p < 0.001). Seven-year follow-up of 322 eyes showed a mean change of -1 letters from baseline, with a mean of 21 injections for the entire period.

Conclusion: The duration of symptoms before treatment decreased, while VA at baseline and after 1 year of treatment increased over the years and so did the number of injections. Long-term follow-up demonstrated stable VA.

Keywords: ETDRS; Swedish Macula Register; age-related macular degeneration; anti-VEGF; anti-vascular endothelial growth factor; neovascular AMD.

Publication types

  • Multicenter Study

MeSH terms

  • Aged
  • Angiogenesis Inhibitors / administration & dosage
  • Disease Progression
  • Female
  • Fluorescein Angiography
  • Follow-Up Studies
  • Fundus Oculi
  • Humans
  • Incidence
  • Intravitreal Injections
  • Macula Lutea / pathology*
  • Male
  • Ranibizumab / administration & dosage*
  • Registries*
  • Retrospective Studies
  • Sweden / epidemiology
  • Time Factors
  • Tomography, Optical Coherence
  • Treatment Outcome
  • Visual Acuity
  • Wet Macular Degeneration / diagnosis
  • Wet Macular Degeneration / drug therapy*
  • Wet Macular Degeneration / epidemiology

Substances

  • Angiogenesis Inhibitors
  • Ranibizumab