Astigmatism: Causes, types | 合法醫療器材資訊網

Symptoms·blurredordistortedvisionatalldistances·headaches·excessivesquinting·eyestrain,especiallywhentheeyehastofocusforlongperiods,asin ...

Astigmatism is a common condition in which the surface of the eye, or cornea, is not curved in the normal way, leading to blurred vision.

The abnormal curve of the cornea means that when light enters the eye, it is not correctly focused on the retina, resulting in an unclear image.

Astigmatism may also be caused by an irregularly shaped lens, located behind the cornea.

It can affect children and adults. It is usually congenital, or present at birth, but it can develop after an eye operation or an injury to the eye.

It is one of a group of eye conditions called refractive errors. These happen when[1] the cornea or lens is not perfectly smooth and evenly curved.

Other refractive errors include near- or far-sightedness and presbyopia, which happens with a...

Astigmatism | 合法醫療器材資訊網

Astigmatism: Causes, Types | 合法醫療器材資訊網

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. Read More

Astigmatism: Causes, Symptoms | 合法醫療器材資訊網

2020年11月9日 — Astigmatism Symptoms. Symptoms of astigmatism may include: Blurry or distorted vision; Eyestrain; Headaches · Trouble seeing at night ... Read More

What Is Astigmatism? | 合法醫療器材資訊網

2021年4月5日 — Astigmatism is caused by an irregular curvature of the eye's cornea or ... A complete eye exam will determine what is causing your symptoms. Read More

Astigmatism: Causes, types | 合法醫療器材資訊網

Symptoms · blurred or distorted vision at all distances · headaches · excessive squinting · eye strain, especially when the eye has to focus for long periods, as in ... Read More

Astigmatism | 合法醫療器材資訊網

Causes — Although astigmatism may be asymptomatic, higher degrees of astigmatism may cause symptoms such as blurred vision, double vision, squinting, eye ... Read More

Astigmatism: Causes, Definition | 合法醫療器材資訊網

Cause. Astigmatism is a condition caused by subtle flaws in the way your eye bends light (a process called refraction) that passes to the retina, the ... Read More

What Is the Main Cause of Astigmatism? | 合法醫療器材資訊網

2021年2月2日 — What Is Astigmatism? ... Astigmatism causes blurry vision resulting from an irregularity of the eye's lens or cornea. These irregularities may ... Read More

Astigmatism | 合法醫療器材資訊網

Astigmatism is a common vision condition that causes blurred vision. It occurs when an irregularly shaped cornea or lens prevents light from focusing ... Read More

Astigmatism | 合法醫療器材資訊網

2016年11月2日 — Astigmatism is usually present at birth. It can result from an injury, scar or operation to the eye, particularly if the corneal surface is ... Read More

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