Fink, B A A comparison of three methods of measurement of toric soft lens orientation. [electronic resource] - American journal of optometry and physiological optics Jul 1982 - 611-4 p. digital Publication Type: Journal Article ISSN: 0093-7002 Standard No.: 10.1097/00006324-198207000-00009 doi Subjects--Topical Terms: Contact Lenses, Hydrophilic--standardsHumansOptometry--instrumentationPhotography--instrumentationRefractive Errors--therapy