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Choroidal thickness and visual prognosis in type 1 lesion due to neovascular age-related macular degeneration

Abstract

Purpose

To evaluate the association between subfoveal choroidal thickness and the visual outcome in eyes with type 1 choroidal neovascularization (CNV) due to neovascular age-related macular degeneration (nAMD).

Methods

This was a retrospective, longitudinal, cross-sectional study including patients diagnosed with nAMD type 1 lesions managed with intravitreal injections of ranibizumab in a PRN strategy during 24 months. Retrospective chart review of patients with type 1 CNV recording the visual acuity, number of intravitreal injections, multimodal imaging data, and follow-up period was performed. Subfoveal choroidal thickness was measured using enhanced depth imaging scans obtained with spectral-domain optical coherence tomography.

Results

Twenty-five eyes of 21 patients were included. The mean baseline logMAR best-corrected visual acuity was 0.52 (+0.35) (median 0.5; range 0.1-1; interquartile range (IQR) 0.3-0.8) and improved to 0.39 (+0.39) (median 0.4; range 0.1-1; IQR 0.2-0.5) by the end of the follow-up (p = 0.038). Subfoveal choroidal thickness was 202.8 (+60.3) μm (median 218; range 81-285; IQR 146-258). Statistical mixed effects model demonstrated an association between rate of improvement of visual acuity with subfoveal choroidal thickness after 24 months (p<0.001) (95% confidence interval 0.0002-0.0001 logMAR month μm); higher thickness values were correlated with better visual acuity.

Conclusions

Thicker subfoveal choroid was associated with better visual outcomes in patients with type 1 CNV due to nAMD following a strict PRN regimen with intravitreal ranibizumab at 24 months of follow-up.

Eur J Ophthalmol 2017; 27(2): 196 - 200

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/ejo.5000860

Authors

Pablo Hernández-Martínez, Rosa Dolz-Marco, David Hervás-Marín, Maria Andreu-Fenoll, Roberto Gallego-Pinazo, José Fernando Arévalo

Article History

Disclosures

Financial support and conflict of interest: Rosa Dolz-Marco: speaker (Bloss, Heidelberg Engineering, Novartis); grant support (Alcon, Allergan, Angelini, Bayer, Novartis, Thea). Maria Andreu-Fenoll: grant support (Alcon, Allergan, Angelini, Bayer, Novartis, Thea). Roberto Gallego-Pinazo: consultant (Alcon, Bayer, Novartis); speaker (Alcon, Bloss, Heidelberg Engineering, Novartis); grant support (Alcon, Allergan, Angelini, Bayer, Novartis, Thea). J. Fernando Arévalo: personal fees from Second Sight LLC, personal fees from Springer SBM LLC, personal fees from Alcon Laboratories, personal fees from DORC International BV, personal fees from Bayer AG, outside the submitted work. Pablo Hernández-Martínez and David Hervás-Marín have no conflict of interest.

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Authors

Affiliations

  •  Unit of Macula, Department of Ophthalmology, University and Polytechnic Hospital La Fe, Valencia - Spain
  •  RETICS Oftared, Instituto de Salud Carlos III, Madrid - Spain
  •  Biostatistics Unit, Health Research Institute La Fe, Valencia - Spain
  •  Retina Division, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD - USA

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