| Title | Keratotomy for astigmatism using an arcuate keratome. | | Author(s) | Hanna KD, Hayward JM, Hagen KB, Simon G, Parel JM, Waring GO | | Institution | Opthalmology Department, Hôpital Hotel-Dieu, Paris, France. | | Source | Arch Ophthalmol 1993 Jul; 111(7):998-1004. | | MeSH | Adolescent
Adult
Aged
Aged, 80 and over
Astigmatism
Cornea
Female
Humans
Image Processing, Computer-Assisted
Intraocular Pressure
Male
Middle Aged
Ophthalmology
Prognosis
| | Abstract | We describe a new system for performing transverse arcuate corneal incisions for the correction of astigmatism. The instrument consists of a conical housing with suction and/or friction fixation to the limbus and two micrometric diamond knives mounted on a carrier that can be rotated by a gear mechanism. The depth, length, and location of the incisions can be predetermined. Light microscopy of donor eye corneas documented the achieved incision depth. One sweep at normal speed produced an incision depth 28% less deep than the preset depth. One sweep at low speed achieved depths of approximately 100% of the knife setting. Variability from one incision to another in the same cornea was related to blade sharpness. We report successful use of the instrument in five consecutive eyes with naturally occurring astigmatism. | | Language | eng | | Pub Type(s) | Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.
| | PubMed ID | 8328944 |
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