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What Happens If You Have Astigmatism and Wear Regular Contacts?

The Challenges Faced by Individuals with Astigmatism

The Role of the Cornea

Astigmatism is a common refractive error that affects the way light enters the eye. Unlike individuals with normal vision, people with astigmatism have an irregularly shaped cornea or lens, which causes light to focus unevenly on the retina. This results in blurry or distorted vision.

Astigmatism Eye

The Need for Corrective Lenses

To correct the irregular curvature of the cornea associated with astigmatism, specialized corrective lenses are required. These lenses are designed to compensate for the asymmetrical shape of the cornea, allowing light to be focused properly on the retina. There are two main types of corrective lenses for astigmatism: toric contact lenses and glasses.

Toric contact lenses are specifically designed to address the unique needs of individuals with astigmatism. They have different powers in different meridians of the lens, which help to correct the uneven curvature of the cornea. On the other hand, regular contact lenses, also known as spherical contact lenses, have the same power in all meridians and are not specifically designed to correct astigmatism.

The Potential Consequences of Wearing Regular Contacts

Blurry Vision

Blurry Vision

One of the most common consequences of wearing regular contacts when you have astigmatism is blurry vision. Since regular contacts do not account for the irregular curvature of the cornea, they fail to correct the uneven focusing of light on the retina. As a result, individuals with astigmatism may experience blurred or distorted vision, especially when looking at objects that are far away or up close.


Regular contacts may also cause discomfort for individuals with astigmatism. Due to the improper fit on the irregularly shaped cornea, these lenses may not sit properly on the eye, leading to irritation, dryness, and a constant feeling of discomfort. This can make wearing regular contacts for extended periods challenging and may require frequent lens adjustments or removal for relief.

Potential Corneal Distortion

Corneal Distortion

Another potential consequence of wearing regular contacts when you have astigmatism is corneal distortion. The improper fit of these lenses on the irregularly shaped cornea can put pressure on certain areas, causing the cornea to change shape over time. This can lead to corneal distortion and further worsen the astigmatism, making it more difficult to achieve clear vision even with the correct prescription lenses.

The Reasons Behind These Issues

Failure to Correct Irregular Curvature

Regular vs Toric Lenses

The main reason regular contacts fail to address the irregular curvature of the cornea associated with astigmatism is their design. Regular contacts have a uniform curvature across the lens, which does not account for the varying curvatures of the astigmatic cornea. As a result, they cannot effectively correct the uneven focusing of light on the retina, leading to blurry vision.

Inadequate Stability and Rotation Control

Toric contact lenses, on the other hand, are specifically designed to provide stability and rotation control. They have different powers in different meridians, allowing them to align properly with the astigmatic cornea. This ensures that the corrective lens stays in the correct position, providing consistent and clear vision. Regular contacts lack this specialized design, making them prone to rotational instability and resulting in compromised vision.

The Impact on Daily Life

Difficulties with Driving and Reading

Driving and Reading

The consequences of wearing regular contacts when you have astigmatism can significantly impact daily life. Individuals with astigmatism may find it challenging to drive, as blurry or distorted vision can affect their ability to see road signs, traffic lights, and other vehicles clearly. Similarly, reading can become difficult, as words may appear blurry or appear to move on the page due to the improper correction of astigmatism.

Trouble Focusing on Objects

Focusing on Objects

Focusing on objects can also be problematic for individuals with astigmatism who wear regular contacts. The inability of these lenses to correct astigmatism properly can make it harder to focus on specific objects, especially those at different distances. This can lead to eye strain, headaches, and overall discomfort when trying to perform tasks that require visual concentration.

The Importance of Seeking Professional Advice

Given the potential consequences and challenges associated with wearing regular contacts when you have astigmatism, it is crucial to seek professional advice from an optometrist. Only a qualified eye care professional can accurately diagnose astigmatism and determine the appropriate corrective lenses for your specific needs.

Seeking Professional Advice

Obtaining Toric Lenses

Optometrists may prescribe toric contact lenses tailored to your astigmatism. These lenses are designed to provide the necessary correction for the irregular curvature of your cornea, ensuring clear and comfortable vision. They offer improved stability, rotation control, and a better fit, minimizing the risk of blurry vision, discomfort, and corneal distortion.

Advancements in Contact Lens Technology

Toric Contact Lenses

Toric Contact Lenses

Fortunately, advancements in contact lens technology have made it possible for individuals with astigmatism to find comfortable and effective solutions. Toric contact lenses have evolved significantly over the years, offering improved vision correction, comfort, and ease of use. They are available in a variety of materials, including soft, silicone hydrogel, and gas-permeable options, allowing individuals to choose what works best for their eyes.

Customized Options

Some individuals with astigmatism may require specialized toric lenses that are custom-made to their unique eye shape and prescription. These customized options provide an even more precise fit and correction, ensuring optimal vision and comfort. Optometrists can assess your specific needs and recommend the most suitable toric lenses for you.


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