Contact Lens Discomfort

Contact lens discomfort can happen if the lenses change shape. While rare, previously well-fitting contact lenses can be affected by temperature and age, causing tears and oxygen to less efficiently make it to the eye. This so-called Tight Lens Condition can cause pain, redness and even swelling of the cornea. Correction consists of remeasuring the eye and fitting new contacts after the eyes have recovered.

The cornea itself can change shape, as can the whole eyeball. The change is subtle, but with contact lenses the tolerances are small. If corneal warpage (as it's called) does happen the result can be discomfort and an increase in the odds of infection. The condition is more common with gas permeable and hard lenses, which are less flexible than soft contact lenses.

If this happens, healing can take weeks or months, during which time contact lenses can't be worn. As the eye resumes its normal shape, vision can change. More than one glasses prescription may be required for optimal sight. In rare cases the astigmatism is permanent.

Pollen and other material can also produce allergic reactions that are sometimes amplified by contact lenses. The eyes become red and irritated and excessive tearing can occur, leading to blurred vision and contact lens discomfort. Sometimes the reaction is the result of preservatives in the lens cleaning solution. It happens more often with soft contact lenses. Treatments include removing the lens for a time, changing solutions and using different storage methods.

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