What might indicate that a contact lens requires replacing?

The indication that a contact lens requires replacing is best reflected by vision becoming blurred. When contact lenses start to degrade, they can accumulate deposits, become damaged, or lose their optical clarity, which can all result in blurriness. This blurriness signals that the lens is no longer functioning effectively and may compromise both comfort and vision quality. Regular replacement of contact lenses is essential to maintain optimal ocular health and clear vision.

Increased comfort during wear suggests that the lens is still functioning well and fitting correctly, which does not indicate a need for replacement. Change in lens color could be a sign of surface deposits or damage; however, it does not inherently signify that the lens needs to be replaced unless accompanied by other symptoms. Consistent sharpness of vision indicates that the contact lens is still effective, further reinforcing that replacement may not be necessary at that time.