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 Wellik, Roy S. Chuck

Research output: Contribution to journalArticle

28 Citations (Scopus)

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
Pages (from-to)1679-1687
Number of pages9
JournalJournal of Cataract and Refractive Surgery
Volume27
Issue number10
DOIs
StatePublished - Nov 12 2001
Externally publishedYes

Fingerprint

Corneal Transplantation
Anterior Chamber
Cornea
Refractive Surgical Procedures
Ophthalmology
Head

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Behrens, A., Dolorico, A. M. T., Kara, D. T., Novick, L. H., McDonnell, P. J., Chao, L. C., ... Chuck, R. S. (2001). Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty. Journal of Cataract and Refractive Surgery, 27(10), 1679-1687. https://doi.org/10.1016/S0886-3350(01)00896-3

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; Chuck, Roy S.

In: Journal of Cataract and Refractive Surgery, Vol. 27, No. 10, 12.11.2001, 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 ; 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.
@article{35ed0af2572d46c7abf0ee61f87f559e,
title = "Precision and accuracy of an artificial anterior chamber system in obtaining corneal lenticules for lamellar keratoplasty",
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.",
author = "Ashley Behrens and Dolorico, {Arlene M T} and Kara, {David T.} and Novick, {Lee H.} and McDonnell, {Peter J.} and Chao, {Lawrence C.} and Sarah Wellik and Chuck, {Roy S.}",
year = "2001",
month = "11",
day = "12",
doi = "10.1016/S0886-3350(01)00896-3",
language = "English",
volume = "27",
pages = "1679--1687",
journal = "Journal of Cataract and Refractive Surgery",
issn = "0886-3350",
publisher = "Elsevier Inc.",
number = "10",

}

TY - JOUR

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

AU - Chuck, Roy S.

PY - 2001/11/12

Y1 - 2001/11/12

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0034749721&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034749721&partnerID=8YFLogxK

U2 - 10.1016/S0886-3350(01)00896-3

DO - 10.1016/S0886-3350(01)00896-3

M3 - Article

C2 - 11687370

AN - SCOPUS:0034749721

VL - 27

SP - 1679

EP - 1687

JO - Journal of Cataract and Refractive Surgery

JF - Journal of Cataract and Refractive Surgery

SN - 0886-3350

IS - 10

ER -