Tật khúc xạ

Tật khúc xạ là một lệch lạc khi ánh sáng hội tụ ở mắt và là một trong những nguyên nhân chính làm suy giảm thị lực.[1]

Phân loại

Những người mắc tật khúc xạ thường xuyên có hiện tượng thị lực bị mờ.[2] Có ba loại tật khúc xạ sau đây:

Đối với những người trung niên (40 tuổi trở lên), khi cơ thể bắt đầu lão hóa, xuất hiện hiện tượng lão thị ở mắt.[3]

Cách chữa trị

Không cần phẫu thuật

Phẫu thuật

Tham khảo

  1. ^ Refractive errors and treatment Lưu trữ 2008-07-23 tại Wayback Machine India Health Mart
  2. ^ WHO| What is a refractive erros World Health Organization
  3. ^ Presbyopia: What causes it? AllAboutVision
  4. ^ Refractive Corrections Lưu trữ 2010-04-12 tại Wayback Machine Lucile Packard Children's Hospital

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