Higa, H Predictability of excimer laser treatment of myopia and astigmatism by the VISX Twenty-Twenty. Melbourne Excimer Laser Group. [electronic resource] - Journal of cataract and refractive surgery Dec 1997 - 1457-64 p. digital Publication Type: Journal Article ISSN: 0886-3350 Standard No.: 10.1016/s0886-3350(97)80015-6 doi Subjects--Topical Terms: AdultAstigmatism--physiopathologyCornea--physiopathologyFollow-Up StudiesHumansLasers, ExcimerMyopia--physiopathologyPhotorefractive Keratectomy--methodsProspective StudiesRefraction, OcularReproducibility of ResultsTreatment OutcomeVisual Acuity--physiology