Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty

Ashley Behrens, Arlene M T Dolorico, David T. Kara, Lee H. Novick, Peter J McDonnell, Lawrence C. Chao, Sarah R. Wellik, Roy S. Chuck

Research output: Contribution to journalArticle

Abstract

Purpose: To determine the precision and accuracy of an artificial anterior chamber and a manual microkeratome in obtaining corneal lenticules for lamellar keratoplasty. Setting: Department of Ophthalmology, Cornea, External Diseases and Refractive Surgery Service, University of California Irvine, Irvine, California, USA. Methods: A lamellar keratectomy was performed in 47 human corneoscleral rims. Three lenticule thicknesses (180, 300, and 360 μm heads) and 3 diameters (7.0, 8.0, and 9.0 mm) were attempted. Diameters and thicknesses were measured by planimetry and pachymetry, respectively. Results: Peripheral lenticule thickness was more likely to be within ±50 μm of the intended depth in thinner cuts (180 μm, 9/15 corneas, 60%; 300 μm, 6/16 corneas, 40%; 360 μm, 3/12 corneas, 33.3%) (P = .045). Eighty percent (32/40 corneas) were within ± 0.5 mm of the expected diameter. Accuracy was best in the 8.0 mm group, with 47.1% (8/17 corneas) within ± 0.2 mm of the expected diameter. A thickness/diameter correlation was not observed (rs ≤ 0.28). Conclusions: The precision and accuracy of this system varied according to the attempted thickness and diameter.

Original languageEnglish (US)
Pages (from-to)1679-1687
Number of pages9
JournalJournal of Cataract and Refractive Surgery
Volume27
Issue number10
DOIs
StatePublished - 2001
Externally publishedYes

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Corneal Transplantation
Anterior Chamber
Cornea
Refractive Surgical Procedures
Ophthalmology
Head

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty. / Behrens, Ashley; Dolorico, Arlene M T; Kara, David T.; Novick, Lee H.; McDonnell, Peter J; Chao, Lawrence C.; Wellik, Sarah R.; Chuck, Roy S.

In: Journal of Cataract and Refractive Surgery, Vol. 27, No. 10, 2001, p. 1679-1687.

Research output: Contribution to journalArticle

Behrens, Ashley ; Dolorico, Arlene M T ; Kara, David T. ; Novick, Lee H. ; McDonnell, Peter J ; Chao, Lawrence C. ; Wellik, Sarah R. ; Chuck, Roy S. / Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty. In: Journal of Cataract and Refractive Surgery. 2001 ; Vol. 27, No. 10. pp. 1679-1687.
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T1 - Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty

AU - Behrens, Ashley

AU - Dolorico, Arlene M T

AU - Kara, David T.

AU - Novick, Lee H.

AU - McDonnell, Peter J

AU - Chao, Lawrence C.

AU - Wellik, Sarah R.

AU - Chuck, Roy S.

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