Myopia is an eye disease that causes poor long-distance vision and is also known as nearsightedness or shortsightedness.1 2 In myopic eyes, the eyeball is either longer than normal, or the cornea is too curved, both causing some images to be blurry.3
Multiple risk factors may contribute to myopia’s development and progression.1 These factors can include:
2. Jones, et al, IOVS 2007
Myopia is often categorized as mild (> -0.25D to –3.00D), moderate (-3.25D to –6.00D) or high severity (-6.00D or higher), depending on the amount of correction needed. Some children who develop myopia have a continual progression throughout their lives, making them high myopes, meaning they require a lens of -6.00 diopters or more.1 2 People with high myopia have an increased risk of retinal detachment, cataracts, myopic degeneration, and glaucoma.3 4
1. Goss DA, Rainey BB. Relation of Childhood Myopia Progression to Time of Year. J Am Optom Assoc. 1998 Apr;69(4):262-6.
4. Flitcroft, D. (2012). The complex interactions of retinal, optical and environmental factors in myopia aetiology. Progress in Retinal and Eye Research.31(6): 622-660.