Wearing Time Problems
 

People can develop problems with being unable to wear a lens as long as they would like. Sometimes this problem is simply related to external problems such as a high pollen count or being in an environment with poor air quality or low humidity. In cases where it becomes increasingly difficult to wear an older lens as long as previously, the lens may be developing protein deposits or other defects. Hard or gas-permeable lenses can often be polished, and will be comfortable to wear again, while soft lenses usually have to be replaced.

Some people are unable to wear any type of lens for the entire day, but can only wear the lens for a limited period of time. In cases where the eyes are somewhat dry, the use of rewetting drops (preferably preservative-free) can extend the time that the lenses can be used. Some people need to remove the lenses at some point during the day, such as lunchtime, and can then subsequently wear them longer during the afternoon. If one is having a problem with the wearing time of lenses, it is usually a good idea to have an eye examination to rule out any other potential problem such as infection or allergy. A lens case with solution should be carried if the lenses need to be removed during the day, since wearing a lens longer than it is comfortable can lead to disaster. One should never put a contact lens in tap water, or in solutions not designed for lens storage or disinfection.