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Randomized Controlled Trial
. 2018 Sep 1;136(9):1008-1014.
doi: 10.1001/jamaophthalmol.2018.2650.

Association Between the Cilioretinal Artery and Choroidal Neovascularization in Age-Related Macular Degeneration: A Secondary Analysis From the Age-Related Eye Disease Study

Kiersten Snyder  1   2 , Amirfarbod Yazdanyar  1 , Aditi Mahajan  1 , Glenn Yiu  1
Affiliations
Randomized Controlled Trial

Association Between the Cilioretinal Artery and Choroidal Neovascularization in Age-Related Macular Degeneration: A Secondary Analysis From the Age-Related Eye Disease Study

Kiersten Snyder et al. JAMA Ophthalmol. .

Erratum in

  • Errors in Tables 2 and 3 and Results Section.
    [No authors listed] [No authors listed] JAMA Ophthalmol. 2019 Jul 1;137(7):856. doi: 10.1001/jamaophthalmol.2019.1384. JAMA Ophthalmol. 2019. PMID: 31046109 Free PMC article. No abstract available.

Abstract

Importance: A hemodynamic role in the pathogenesis of age-related macular degeneration (AMD) has been proposed, but to our knowledge, an association between retinal vasculature and late AMD has not been investigated.

Objective: To determine whether the presence and location of a cilioretinal artery may be associated with the risk of late AMD in the Age-Related Eye Disease Study (AREDS).

Design, setting, and participants: Retrospective analysis of prospective, randomized clinical trial data from 3647 AREDS participants. Fundus photographs of AREDS participants were reviewed by 2 masked graders for the presence or absence of a cilioretinal artery and whether any branch extended within 500 μm of the central macula. Multivariate regressions were used to determine the association of the cilioretinal artery and vessel location, adjusted for age, sex, and smoking status, with the prevalence of choroidal neovascularization (CNV) or central geographic atrophy (CGA) and AMD severity score for eyes at randomization and progression at 5 years.

Main outcomes and measures: Association of cilioretinal artery with prevalence and 5-year incidence of CNV or CGA.

Results: Among AREDS participants analyzed, mean (SD) age was 69.0 (5.0) years, with 56.3% female, 46.6% former smokers, and 6.9% current smokers. A total of 26.9% of patients had a cilioretinal artery in 1 eye, and 8.4% had the vessel bilaterally. At randomization, eyes with a cilioretinal artery had a lower prevalence of CNV (5.0% vs 7.6%; OR, 0.66; 95% CI, 0.51-0.85; P = .001) but no difference in CGA (1.1% vs 0.8%; OR, 1.33; 95% CI, 0.76-2.32; P = .31). In eyes without late AMD, those with a cilioretinal artery also had a lower mean (SD) AMD severity score (3.00 [2.35] vs 3.19 [2.40]; P = .02). At 5 years, eyes at risk with a cilioretinal artery had lower rates of progression to CNV (4.1% vs 5.5%; OR, 0.75; 95% CI, 0.56-1.00; P = .05) but no difference in developing CGA (2.2% vs 2.7%; OR, 0.83; 95% CI, 0.56-1.23; P = .35) or change in AMD severity score (0.65 [1.55] vs 0.73 [1.70]; P = .11). In patients with a unilateral cilioretinal artery, eyes with the vessel showed a lower prevalence of CNV than fellow eyes (4.7% vs 7.2%; P = .01).

Conclusions and relevance: The presence of a cilioretinal artery is associated with a lower risk of developing CNV, but not CGA, suggesting a possible retinal hemodynamic contribution to the pathogenesis of neovascular AMD.

Trial registration: ClinicalTrials.gov Identifier: NCT00000145.

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Conflict of interest statement

Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Yiu reports grants and personal fees from Alcon, Alimera, Allergan, Carl Zeiss Meditec, and Iridex, all outside of the submitted work. No other disclosures were reported.

Figures

Figure.
Figure.. Fundus Photographs
Fundus photographs of eyes with cilioretinal arteries and varying age-related macular degeneration (AMD) severity scores in the Age-Related Eye Disease Study (AREDS). Various examples of cilioretinal arteries (arrowheads) can be seen in eyes with AMD severity score of 1 (A), AMD severity score of 5 (B), AMD severity score of 10 (C; central geographic atrophy), and AMD severity score of 12 (D; choroidal neovascularization and central geographic atrophy).
See this image and copyright information in PMC

Comment in

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