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Titolo:
Direct measurement of microkeratome gap width by electron microscopy
Autore:
Liu, KY; Lam, DSC;
Indirizzi:
Chinese Univ Hong Kong, Hong Kong Eye Hosp, Dept Ophthalmol & Visual Sci, Kowloon, Hong Kong, Peoples R China Chinese Univ Hong Kong Kowloon Hong Kong Peoples R China Peoples R China
Titolo Testata:
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
fascicolo: 6, volume: 27, anno: 2001,
pagine: 924 - 927
SICI:
0886-3350(200106)27:6<924:DMOMGW>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
IN-SITU KERATOMILEUSIS; LASER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, KY Chinese Univ Hong Kong, Hong Kong Eye Hosp, Dept Ophthalmol & Visual Sci, 147K Argyle St, Kowloon, Hong Kong, Peoples R China Chinese Univ Hong Kong 147K Argyle St Kowloon Hong Kong Peoples R China
Citazione:
K.Y. Liu e D.S.C. Lam, "Direct measurement of microkeratome gap width by electron microscopy", J CAT REF S, 27(6), 2001, pp. 924-927

Abstract

Purpose: To perform an accurate direct measurement of the microkeratome gap width using scanning electron microscopy (SEM). Setting: Electron Microscope Unit, University of Hong Kong, Hong Kong, China. Methods: The Cambridge Stereoscan S440 scanning electron microscope was used to measure the gap width of 4 SCMD microkeratomes with high accuracy(+/-1.5 mum). Results: The manufacturer's gap specification for the 4 microkeratomes was150.0 mum. The gap width measurements using SEM were 164.7 mum, 190.0 mum,200.6 mum, and 145.9 mum and the respective errors, 9.8%, 26.7%, 33.7%, and 2.7%. Two of the 4 microkeratomes had more than a 25% error in gap width from the specification. Conclusions: The great variation in gap width from the manufacturer's specification for the 4 SCMD microkeratomes was beyond the standard of tolerance normally accepted in laser in situ keratomileusis (LASIK). Many unexpected LASIK-related keratectasia and corneal perforations may be related to substandard microkeratome manufacturing and calibration. All new microkeratomes and blades should be validated before use to avoid keratectasia and otherflap problems in LASIK. J Cataract Refract Surg 2001, 27.. 924-927 (C) 2001 ASCRS and ESCRS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 12:18:09