taittovirheistä

Taittovirhe, also known as refractive error, is a common vision problem where the eye does not refract light properly. This leads to blurred or distorted vision. The most common types of taittovirhe include myopia (likinäköisyys), hyperopia (kaukotaittoisuus), and astigmatism (hajataittoisuus). Myopia occurs when the eye is too long or the cornea is too curved, causing distant objects to appear blurry. Hyperopia happens when the eye is too short or the cornea is too flat, resulting in difficulty seeing close-up objects clearly, although in some cases distant vision can also be affected. Astigmatism is caused by an irregularly shaped cornea or lens, which scatters light and causes blurred vision at all distances. Presbyopia (ikänäkö) is another type of refractive error that develops with age, making it harder to focus on near objects. Taittovirhe is typically diagnosed through a comprehensive eye examination. Treatment options depend on the type and severity of the error and often include corrective lenses such as eyeglasses or contact lenses. In some cases, refractive surgery may be an option to permanently correct the vision. Early detection and correction of taittovirhe are important for maintaining good vision and preventing potential complications.