Your eyes’ even corneal surface and almost-perfect round shape help accurately bend light rays toward your retina. That said, any infirmities to their structures may disrupt the light distribution process, resulting in refractive errors, such as astigmatism. For your understanding, let your go-to vision therapy clinic, Clear View Vision Care, answer your top questions about this problem.
Q: What Causes Astigmatism?
Astigmatism has two general classifications based on its root problem. Lenticular astigmatism occurs when the natural lenses in your eyes are irregularly shaped, causing light rays to disperse in various directions. Meanwhile, corneal astigmatism happens when the clear structure covering your eye’s frontal side, also known as the cornea, has an uneven exterior. This may lead to problems directing the light rays on the retina. While the exact causes behind these structural impairments are still unknown, inborn problems and heredity are common risk factors.
Q: What Are the Usual Symptoms?
You may have blurry eyesight, whether you’re looking at distant or nearby objects. Eye strain and headaches are also typical manifestations. In some cases, certain areas across your visual field may appear distorted. If you notice any of these, we suggest seeing your trusted eye doctor as soon as possible.
Q: How is Astigmatism Detected?
We’ll perform a comprehensive eye exam to check your eyes’ light-focusing processes. We may also include a visual acuity test to see how sharp your eyes are and a refraction test to establish your ideal lens power. For a more accurate diagnosis, we may use our OCULUS Keratograph® 5M device as well to asses your corneal topography, measuring the corneal surface’s thickness and evenness.
Q: How is It Managed?
Upon confirming astigmatism, we may prescribe using toric lenses for your corrective eyewear. Their unique geometric design compensates your eyes’ structural irregularities, letting you see both near and far objects clearly. We may also suggest wearing orthokeratology lenses while you sleep. They are specially designed to restructure your impaired cornea overnight. You may remove them in the morning and enjoy a day’s worth of improved visual clarity.
If you have any further questions about astigmatism, call us at (520) 394-6111 or complete our form. We serve Tucson and nearby AZ areas.