Can I Wear Normal Contacts With Astigmatism?
The short answer is: no, you generally can't wear standard spherical contact lenses if you have astigmatism. Standard contact lenses, often referred to as spherical lenses, correct only nearsightedness (myopia) or farsightedness (hyperopia). Astigmatism, however, is a refractive error where the cornea (the clear front part of your eye) is irregularly shaped, causing blurred vision at all distances. This requires a different type of lens to correct.
To understand why, let's delve into the specifics of astigmatism and the types of contact lenses available.
What is Astigmatism?
Astigmatism occurs because your cornea isn't perfectly round like a basketball; instead, it's more like a football, with a steeper curve in one direction than another. This irregular shape causes light to focus unevenly on your retina, resulting in blurry vision at all distances. It's often present alongside nearsightedness or farsightedness, meaning you might have a combination of refractive errors.
What Types of Contact Lenses Correct Astigmatism?
To correct astigmatism, you need contact lenses designed to compensate for the irregular curvature of your cornea. These are called toric contact lenses. Toric lenses have a different curvature in different meridians (directions) to counteract the uneven focusing caused by astigmatism. They are specially designed to stay in place and provide clear vision even with this irregularity.
There are also multifocal toric lenses available for those with astigmatism and presbyopia (age-related difficulty focusing on near objects). These lenses address both conditions simultaneously.
What Happens if I Wear Spherical Contacts With Astigmatism?
Wearing spherical contact lenses when you have astigmatism will likely result in:
- Blurry vision: You won't get the clear vision you need for everyday activities.
- Eye strain: Your eyes will work harder to compensate for the blurry vision, leading to discomfort, headaches, and fatigue.
- Discomfort: The lenses might not sit comfortably on your eye due to the mismatch in shape.
How Do I Get the Right Contact Lenses for Astigmatism?
The only way to determine the correct type and prescription of contact lenses for your eyes is through a comprehensive eye exam with an optometrist or ophthalmologist. They will perform various tests to accurately measure your refractive error, including your astigmatism, and recommend the most suitable lenses for your specific needs. Never attempt to self-diagnose or self-prescribe contact lenses.
Can I Wear Daily Disposable Toric Contacts?
Yes, toric contact lenses are available in daily disposable options, providing convenience and hygiene benefits. Daily disposables minimize the risk of infection and are particularly useful for those with sensitive eyes.
Are Toric Contact Lenses More Expensive?
Generally, toric contact lenses cost more than spherical lenses due to their more complex design and manufacturing process. However, the improved vision and comfort they offer often make the extra cost worthwhile.
This information is for general knowledge and does not constitute medical advice. Always consult with a qualified eye care professional for diagnosis and treatment of any eye condition.
