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  • Title: Prevalence and genomic association of reticular pseudodrusen in age-related macular degeneration.
    Author: Ueda-Arakawa N, Ooto S, Nakata I, Yamashiro K, Tsujikawa A, Oishi A, Yoshimura N.
    Journal: Am J Ophthalmol; 2013 Feb; 155(2):260-269.e2. PubMed ID: 23111182.
    Abstract:
    PURPOSE: To survey the prevalence of reticular pseudodrusen in late age-related macular degeneration (AMD) using multiple imaging methods, and to investigate the association between reticular pseudodrusen and polymorphisms in complement factor H (CFH) and age-related maculopathy susceptibility 2 (ARMS2) genes. DESIGN: Retrospective case series. METHODS: This study included 216 consecutive patients with late AMD (typical AMD, polypoidal choroidal vasculopathy [PCV], retinal angiomatous proliferation [RAP], or geographic atrophy). Eyes were assessed for reticular pseudodrusen using the blue channel of color fundus photography, infrared reflectance, fundus autofluorescence, and spectral-domain optical coherence tomography. The major AMD-associated single nucleotide polymorphisms (CFH Y402 rs1061170, CFH I62V rs800292, and ARMS2 A69S rs10490924) were genotyped. RESULTS: Forty-nine eyes of 30 patients had a reticular pattern in ≥2 imaging modalities and were diagnosed with reticular pseudodrusen. Of these, 16 had bilateral late AMD, whereas 32 of 186 patients without reticular pseudodrusen had bilateral late AMD (P < .001). The prevalence of reticular pseudodrusen was 83% in RAP, 50% in geographic atrophy, 9% in typical AMD, and 2% in PCV. The frequency of the T allele in ARMS2 A69S in patients with and without reticular pseudodrusen was 78.6% and 59.9%, respectively (P=.007). CONCLUSIONS: The prevalence of reticular pseudodrusen was low in PCV cases. About 50% of patients with reticular pseudodrusen had bilateral late AMD. The connection of ARMS2 risk allele and reticular pseudodrusen was confirmed in a Japanese population.
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