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Panayiota Founti, Anne L Coleman, M Roy Wilson, Alon Harris, Theofanis Pappas, Fei Yu, Eleftherios Anastasopoulos, Angeliki Salonikiou, Archimidis Koskosas, Fotis Topouzis; Twelve years incidence of late age-related macular degeneration in the Thessaloniki Eye Study. Invest. Ophthalmol. Vis. Sci. 2016;57(12):12. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
To determine incidence rates of late age-related macular degeneration (AMD), including geographic atrophy (GA) and neovascular AMD, in the Thessaloniki Eye Study (TES) population.
This is a population-based incidence study. A total of 2554 randomly selected, Caucasian subjects, ≥60 years old participated in the TES prevalence study between 1999 and 2002. Participants were re-invited to undergo a comprehensive ophthalmic examination during the incidence study between 2013 and 2015. Definitions for late AMD in the incidence study were the same as in the prevalence study (Topouzis F, et al. Prevalence of age-related macular degeneration in Greece: the Thessaloniki Eye Study. Am J Ophthalmol. 2006;142:1076-9).
Among 2554 subjects who participated in the TES prevalence study, 1041 were deceased, 25 had moved and for 20 subjects no contact information was available. The remaining 1468 subjects for whom contact data were confirmed were deemed eligible to participate in the incidence study. All of the 1468 subjects were invited and 1092 were examined (participation rate 74.4%).The mean age at baseline was 68.9 ± 4.6 years with 566 males (51.8%) and 526 (48.8%) females. The mean follow-up time was 11.6 ± 1.6 years.Among the 1092 participants, 14 subjects had been already diagnosed with late AMD at baseline (6 subjects with neovascular AMD and 8 subjects with GA), leaving a total of 1078 participants at risk for late AMD in the incidence study. Among them, there were 55 incident cases of late AMD (21 males and 34 females, 38.18% and 61.82% respectively), corresponding to an incident rate of 5.4%. Among these 55 incident cases, 29 were GA and 26 were neovascular AMD, corresponding to incident rates of 2.7% and 2.4% respectively.
In the TES population the twelve year incident rate for late AMD was 5.4%, which appears to be higher than the 2 year late AMD incidence rate reported by Rotterdam when extrapolated to the 12-year incidence (Klaver CC, et al. Incidence and progression rates of age-related maculopathy: the Rotterdam Study. Invest Ophthalmol Vis Sci. 2001;42:2237-41).
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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