astigmatism



What are the symptoms of astigmatism? The symptoms of astigmatism may differ in each person. Some people don’t have any symptoms at all. The symptoms of astigmatism include: blurry, distorted, or fuzzy vision at all distances (up close and far away)difficulty seeing at night eyestrain squinting eye irritation headaches





In some cases, astigmatism is caused by the distortion of the shape of the lens inside the eye. This is called lenticular astigmatism, to differentiate it from the more common corneal astigmatism. It's important to schedule an eye exam for your child to avoid vision problems in school from uncorrected astigmatism.


3 types of astigmatism There are three primary types of astigmatism: Myopic Astigmatism. One or both principal meridians of the eye are nearsighted. (If both meridians are nearsighted, they are myopic in differing degree.) Hyperopic Astigmatism.


One or both principal meridians are farsighted.

(If both are farsighted, they are hyperopic in differing degree.) Mixed astigmatism. One principal meridian is nearsighted, and the other is farsighted. Astigmatism is also classified as regular or irregular. In regular astigmatism, the principal meridians are 90 degrees apart (perpendicular to each other). In irregular astigmatism, the principal meridians are not perpendicular. Most astigmatism is regular corneal astigmatism, which gives the front surface of the eye an oval shape.


Irregular astigmatism can result from an eye injury that has caused scarring on the cornea, from certain types of eye surgery or from keratoconus, a disease that causes a gradual thinning of the cornea. Astigmatism tests Astigmatism is detected during a routine eye exam with the same instruments and techniques used for the detection of nearsightedness and farsightedness.


Your eye doctor can estimate the amount of astigmatism you have by shining a light into your eye while manually introducing a series of lenses between the light and your eye.


This test is called the retinoscopy. Astigmatism correction options Astigmatism can usually be corrected with eyeglasses, contact lenses or refractive surgery. Refractive surgery is one of the less common astigmatism correction options, however, since it is a laser procedure that changes the shape of your eyes, it comes with risks associated with most surgeries.


Astigmatism should be treated as soon as possible. Once diagnosed, regular visits to an eye doctor are required as astigmatism can fluctuate over time, making it necessary for prescriptions to be modified.







Astigmatism is a common vision problem caused by an error in the shape of the cornea. With astigmatism, the lens of the eye or the cornea, which is the front surface of the eye, has an irregular curve. This can change the way light passes, or refracts, to your retina. This causes blurry, fuzzy, or distorted vision. Farsightedness and nearsightedness are two other types of problems with the way light pass to your retina. Farsightedness is called hyperopia. Nearsightedness is called myopia. What are the types of astigmatism? The two main types of astigmatism are corneal and lenticular. Corneal astigmatism happens when your cornea is misshapen. Lenticular astigmatism happens when your lens is misshapen. What causes astigmatism? It’s not known what causes astigmatism, but genetics is a big factor. It’s often present at birth, but it may develop later in life. It may also occur as a result of an injury to the eye or after eye surgery. Astigmatism often occurs with nearsightedness or farsightedness.