title: Some clinically observed phenomena in extended contact lens wear.
abstract: Two groups of volunteer subjects wearing extended-wear soft lenses were monitored over a period of 20 weeks. Of 6 factors measured only 1, corneal touch threshold, was found to show evidence of progressive change. However, a high incidence of lens surface deposits was encountered.
mesh_terms: D002986:Clinical Trials as Topic; D003228:Conjunctiva / Q000473:pathology; D003263:Contact Lenses, Hydrophilic / Q000009:adverse effects; D003315:Cornea / Q000473:pathology / Q000502:physiology; D004848:Epithelium / Q000473:pathology; D006801:Humans; D011897:Random Allocation; D013997:Time Factors; D014110:Touch; D014792:Visual Acuity