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특허 상세정보

Multizone, multipass photorefractive keratectomy

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A61B-017/36   
미국특허분류(USC) 606/05 ; 606/04
출원번호 US-0664726 (1996-06-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Farkas & Manelli PLLCBollman
인용정보 피인용 횟수 : 16  인용 특허 : 93
초록

A multizone, multipass photorefractive keratectomy (MP-PRK) technique to treat 315 eyes with the 193-nm VISX 20/20 excimer laser. The procedure includes making multipass ablations that increase in ablative depth to create as step-wise ablation of the corneal to the predetermined dioptric correction. It also includes making multizone ablations that create of variable widths that result in a predetermined ablative depth with smooth transition edges. A combination of multizone, multipass ablations are used to treat astigmatism. New algorithms effectively tr...

대표
청구항

[ I claim:] [1.] A method of performing photorefractive keratectomy with a surgical laser on a cornea of an eye to correct a refractive error of the cornea, the method comprising:performing a preoperative topographic analysis of the cornea of the eye;anesthetizing the eye;removing a corneal epithelium; andperforming corneal ablations of the cornea with the surgical laser using multiple passes in multiple zones, the corneal ablations being made from an inner zone to an outer zone of varying ablative depth, the width of each respective zone being varied to...

이 특허에 인용된 특허 (93)

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