Does Rubbing Your Eyes Increase Astigmatism or Risk Keratoconus? - Ophthalmology

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Rubbing your eyes can indeed have implications for your eye health, particularly concerning conditions like astigmatism and keratoconus. While occasional light rubbing may not pose a significant risk, it is essential to understand the potential consequences of this habit, especially for individuals with pre-existing conditions like high astigmatism or those who are on the borderline of developing keratoconus.

Astigmatism occurs when the cornea, the clear front surface of the eye, is irregularly shaped. This irregularity can lead to blurred or distorted vision. Rubbing your eyes can exacerbate this condition by altering the shape of the cornea temporarily. While a single instance of light rubbing may not significantly change the corneal shape, repeated or vigorous rubbing can lead to more pronounced changes over time. This is particularly concerning for individuals like yourself, who already have a high degree of astigmatism (425 degrees).
Keratoconus is a progressive condition where the cornea thins and bulges into a cone-like shape, leading to significant visual impairment. The exact cause of keratoconus is not fully understood, but it is believed to involve a combination of genetic, environmental, and mechanical factors. Rubbing the eyes is considered a potential mechanical factor that could contribute to the progression of keratoconus. In your case, since your corneal topography showed values close to the critical range (43.21 to 45.38D), it is wise to be cautious. While your recent examination did not indicate keratoconus, the proximity to the threshold means that any additional stress on the cornea, such as from rubbing, could potentially increase the risk of developing or exacerbating keratoconus.

The risk associated with eye rubbing is not solely dependent on the force applied but also on the frequency and duration of the rubbing. Light, infrequent rubbing may not lead to significant changes, but habitual or aggressive rubbing can introduce mechanical stress that could alter corneal shape and integrity. Therefore, it is advisable to avoid rubbing your eyes altogether, especially if you experience itching or discomfort. Instead, consider using lubricating eye drops to alleviate dryness or irritation, which can often be a trigger for the urge to rub.

If you find yourself rubbing your eyes frequently, it may be beneficial to identify and address the underlying causes of your discomfort. Common causes include dry eyes, allergies, or fatigue. Managing these conditions can reduce the urge to rub your eyes and help maintain your eye health.
In summary, while occasional light rubbing may not significantly increase your risk of worsening astigmatism or developing keratoconus, it is best to avoid the habit altogether, especially given your current eye health status. If you have concerns about your eye condition or experience persistent symptoms, it is crucial to follow up with your eye care professional for further evaluation and personalized advice. Regular monitoring and proactive management of your eye health can help prevent complications and maintain optimal vision.