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Long-term follow-up of patients with choroidal neovascularization due to angioid streaks

Authors Martinez-Serrano MG, Rodriguez-Reyes A, Guerrero-Naranjo JL, Salcedo-Villanueva G, Fromow-Guerra J, García-Aguirre G, Morales-Canton V, Velez-Montoya R

Received 24 July 2016

Accepted for publication 15 September 2016

Published 19 December 2016 Volume 2017:11 Pages 23—30

DOI https://doi.org/10.2147/OPTH.S118016

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser

Maria Guadalupe Martinez-Serrano,1 Abelardo Rodriguez-Reyes,2 Jose Luis Guerrero-Naranjo,1,3 Guillermo Salcedo-Villanueva,1 Jans Fromow-Guerra,1,3 Gerardo García-Aguirre,1,3 Virgilio Morales-Canton,1 Raul Velez-Montoya1,3

1Retina Department, 2Pathology Department, Asociación para Evitar la Ceguera en Mexico, Hospital “Dr Luis Sanchez Bulnes” IAP, 3Macula Retina Consultants, Mexico City, Mexico

Background: The following case series describes the long-term anatomical and functional outcome of a group of seven patients with choroidal neovascularization (CNV), secondary to angioid streaks (AS), who were treated with antiangiogenic drugs in a pro re nata (PRN) regimen. After the 4-year mark, visual acuity tends to return to pretreatment level. Treatment delays and lack of aware­ness and self-referral by the patients are believed to be the cause of the PRN regimen failure.
Purpose:
To assess the long-term outcomes (>4 years) of patients with CNV due to AS treated with a PRN regimen of antiangiogenic.
Methods: This was a retrospective, case series, single-center study. We reviewed the electronic medical records from patients with CNV due to AS. From each record, we noted general demographic data and relevant medical history; clinical presentation, changes in best-corrected visual acuity (BCVA) over time, optical coherent tomography parameters, treatment and retreatment details, and systemic associations. Changes in BCVA and central macular thickness were assessed with a Wilcoxon two-sample test, with an alpha value of ≤0.05 for statistical significance.
Results: The mean follow-up time was 53.8±26.8 months. BCVA at baseline was: 1.001±0.62 logMAR; at the end of follow-up: 0.996±0.56 logMAR (P=0.9). Central macular thickness at baseline was: 360.85±173.82 µm; at the end of follow-up: 323.85±100.34 µm (P=0.6). Mean number of intravitreal angiogenic drugs: 6±4.16 injections (range 4–15). Mean time between injections was 3.8±2.7 months (range 1.9–5.8 months).
Conclusion:
Despite initial anatomical and functional improvement, patients at the end of the follow-up had no visual improvement after a pro re nata regimen of antiangiogenic drugs. The amount of retreatments, number of recurrences, and time between intravitreal injections were similar to previous reports with shorter follow-up.

Keywords: angioid streaks, choroidal neovascularization, long term, antiangiogenic, bevacizumab, ranibizumab, outcome

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