The risk is higher if both parents are nearsighted. If one of your parents is nearsighted, your risk of developing the condition is increased. Nearsightedness tends to run in families. Vision is distorted or blurry at all distances.Ĭertain risk factors may increase the likelihood of developing nearsightedness, such as the following: This occurs when your cornea or lens is curved more steeply in one direction than in another. For some people with farsightedness, objects are blurry at all distances. Some people may perceive distant objects as somewhat clear, but near objects appear blurry. This occurs when your eyeball is shorter than a typical eye or your cornea is curved too little. The messages sent from the retina to the brain are perceived as blurry. These changes result in light rays coming to a point in front of the retina and crossing. It may also result from the curve of the cornea being too steep. Nearsightedness usually results from the eye being too long or oval-shaped rather than round. This problem occurs when the shape or condition of the cornea - or the shape of the eye itself - results in an inaccurate focusing of the light passing into the eye. These tissues translate light into signals sent to the brain, which enables you to perceive images. They bend (refract) the light, so that the light is focused directly on the nerve tissues (retina) at the back of your eye. In order for you to see, light has to pass through the cornea and lens. The lens is a clear structure about the size and shape of an M&M's candy.The cornea is the clear, dome-shaped front surface of your eye. ![]() Your eye has two parts that focus images: Your health care provider or eye care specialist will recommend how often to get an exam. Also, you'll likely need more regular exams if you already have prescription glasses or contacts or if you've had surgery for vision correction. If you have diabetes, a family history of eye disease, high blood pressure, or other risks of heart or vascular disease, you'll likely need more-regular eye exams. The American Academy of Ophthalmology recommends that healthy adults with no known problems with vision or eye disease should get a complete eye exam on the following schedule: If a problem is identified in a screening test, then you'll need to schedule a complete eye exam with an optometrist or ophthalmologist.
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