What would be an indicator of poor contact lens hygiene?

Redness and sensitivity are significant indicators of poor contact lens hygiene. These symptoms suggest that the lenses may not be properly cleaned or that they have accumulated deposits, which can lead to irritation and inflammation of the eye. When hygiene practices are not followed, it increases the risk of eye infections, which often present as redness, sensitivity to light, and discomfort. Maintaining proper hygiene is essential for the health of the eyes while using contact lenses, and any signs of redness or sensitivity warrant immediate investigation.

In contrast, experiencing clear vision without irritation and stable vision with proper care indicates that the contact lenses are being managed well and that hygiene practices are likely being followed appropriately. Frequent headaches and tired eyes may suggest other issues such as a need for a different prescription, but they are not direct indicators of poor hygiene like redness and sensitivity are.