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Age-related differences in the prevalence of subtypes of Neovascular age-related macular degeneration in the first diagnosed eye

  • Retinal Disorders
  • Published:
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Abstract

Purpose

To evaluate age-related differences in the prevalence of subtypes of neovascular age-related macular degeneration (AMD) in the first diagnosed eye.

Methods

This retrospective, observational study included 1099 eyes of 1099 patients diagnosed with neovascular AMD. The neovascular AMD cases were classified into three subtypes: typical neovascular AMD, polypoidal choroidal vasculopathy (PCV), and type 3 neovascularization. The patients were divided into four groups, according to age: > 50 and < 60 years, ≥ 60 and < 70 years, ≥ 70 and < 80 years, and ≥ 80 years. Difference in the prevalence of three AMD subtypes was evaluated among the four age groups.

Results

In the age group > 50 and < 60 years, 34 (25.0%) and 102 patients (75.0%) were diagnosed with typical neovascular AMD and PCV, respectively. In the age group ≥ 60 and < 70 years, 90 (28.1%), 206 (64.4%), and 24 patients (7.5%) were diagnosed with typical neovascular AMD, PCV, and type 3 neovascularization, respectively. In the age group ≥ 70 and < 80 years, the corresponding numbers were 200 (41.9%), 197 (41.3%), and 80 (16.8%), respectively; in the age group ≥80 years, the corresponding values were 83 (50.0%), 39 (23.5%), and 44 (26.5%), respectively. A significant difference was observed in the prevalence of the subtypes of neovascular AMD among the four age groups (chi-square test, P < 0.001).

Conclusion

Subtype prevalence in newly diagnosed neovascular AMD differs significantly according to age. This result suggests that different pathophysiology may be involved in the development of different subtypes of neovascular AMD.

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Funding

Kim’s Eye Hospital (Seoul, South Korea) provided financial support in the form of funding for English editing support. The sponsor had no role in the design or conduct of this research.

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Authors and Affiliations

  1. Department of Ophthalmology, Kim’s Eye Hospital, Konyang University College of Medicine, #156 Youngdeungpo-dong 4ga, Youngdeungpo-gu, Seoul, 150-034, South Korea

    Jae Hui Kim, Jong Woo Kim, Chul Gu Kim & Dong Won Lee

  2. Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea

    Young Suk Chang

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  1. Jae Hui Kim
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Correspondence to Jae Hui Kim.

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The study was approved by the institutional review board of Kim’s Eye Hospital (Seoul, South Korea). This study was conducted in accordance with the tenets of the Declaration of Helsinki.

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Kim, J.H., Chang, Y.S., Kim, J.W. et al. Age-related differences in the prevalence of subtypes of Neovascular age-related macular degeneration in the first diagnosed eye. Graefes Arch Clin Exp Ophthalmol 257, 891–898 (2019). https://doi.org/10.1007/s00417-018-04228-4

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  • DOI: https://doi.org/10.1007/s00417-018-04228-4

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