Extended-wear lenses are soft contact lenses that may be worn for days to weeks at a time without being removed for sleeping or cleaning (average wearing time is 5-7 days). ... These lenses are generally lighter in weight than standard lenses but cost approximately the same as replacing ... with growth, the problem of chronic otitis media often resolves itself without the need for replacement of ear tubes.
|Title||:||Instructor's manual to accompany Tortora and Grabowski Principles of anatomy and physiology|
|Author||:||Gerard J. Tortora, Sandra Reynolds Grabowski|