title: Effects of rigid lens flexure on vision.
abstract: Rigid lenses may flex on the eye, particularly when the center thickness is less than 0.12 mm. Rigid oxygen permeable materials are less rigid than PMMA and can be expected to flex more easily.
mesh_terms: D000293:Adolescent; D002648:Child; D003261:Contact Lenses / Q000592:standards*; D004548:Elasticity; D006801:Humans; D008768:Methylmethacrylates; D012030:Refractive Errors / Q000628:therapy*; D013314:Stress, Mechanical; D014792:Visual Acuity
chemical_list: D008768:Methylmethacrylates