Gundel, R E Changes in contrast sensitivity induced by spherical hydrogel lenses on low astigmats. [electronic resource] - Journal of the American Optometric Association Aug 1988 - 636-40 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0003-0244 Subjects--Topical Terms: AdultAstigmatism--physiopathologyContact Lenses, HydrophilicContrast SensitivityFemaleHumansMaleMyopia--physiopathology