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Astigmatism is quite a common vision condition that affects the sharpness of one’s sight. It is caused by a curvature of the eyeball itself within the cornea or the lens. In an eye without astigmatism, the curvature of the cornea or lens will be equally directionally curved, which wallows for the eye to focus rays of light accordingly to the retina in the back of the eye. When there is astigmatism present, the incorrect and unequal curvature of the cornea and lens doesn’t allow for the light to be properly reflected to the retina at the back of the eye which impacts the sharp focus of objects. When the light rays cannot refract properly, it is referred to as a refractive error.
The different types of astigmatisms
There are two different types of astigmatisms, corneal astigmatism and lenticular astigmatism. Regardless of the type, the result is still an inability to properly focus on objects that either far away or up close. The corneal astigmatism occurs because of an improper curvature of the cornea, while the lenticular astigmatism occurs because of an improper curvature of the lens.
Very commonly those who suffer from astigmatism also suffer from other refractive errors such as nearsightedness (myopia) or farsightedness (hyperopia). Often adults will recognize when they are suffering from an astigmatism while children are often unaware that they are. This highlights the importance of regular visits to your family’s Arlington optometrist.
Astigmatism can also be categorized into three different types by means of farsightedness and nearsightedness, whereas if the eye is fully nearsighted, it is a Myopic astigmatism. If the eye is fully farsighted, then it is called a hyperopic astigmatism. If the eye is both farsighted and nearsighted, it is called a mixed astigmatism.
The causes of astigmatism
We know that the cause of astigmatism is due to improper and unequal curvature of the lens or cornea, but doctors aren’t sure why exactly this improper curvature occurs, however, it is a very common condition. To explain this misshapenness in easier terms, when the eye suffers from astigmatism is often shaped more like a football than symmetrically like a basketball. Astigmatism is also often an inherited condition, yet it can develop due to various eye abruptions such as injury or surgery.
The symptoms of astigmatism
The symptoms of astigmatism usually include one or more of the following symptoms:
- Blurred vision
- Distorted vision
- Inability to focus on objects
- Eye fatigue
- Squinting when trying to see objects
If you are experiencing any of the above symptoms you should make an appointment with your Arlington eye doctor. Often astigmatism is diagnosed at annual eye checkups, which are very important to attend. Seeing your doctor regularly ensures that he or she is able to catch any eye conditions early on and potentially prevent them from worsening. Here at First Eye Care North Arlington we are a vision center that can meet all of your vision needs from start to finish. If you have any questions or would like to come see one of our trusted doctors for an appointment, contact us today.