COMPARISON OF CENTRAL CORNEAL THICKNESS MEASUREMENTS BETWEEN OPTICAL AND ULTRASOUND PACHOMETERS

被引：60

作者：

GIASSON, C

FORTHOMME, D

机构：

[1] School of Optometry, University of California, Berkeley, CA

[2] Ecole d’Optomédtrie, Université de Montréal, Montreal, QC

来源：

OPTOMETRY AND VISION SCIENCE | 1992年 / 69卷 / 03期

关键词：

CORNEA; CORNEAL THICKNESS; OPTICAL PACHOMETER; ULTRASONIC PACHOMETER; PACHOMETRY;

D O I：

10.1097/00006324-199203000-00010

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

The central corneal thickness measured by 2 methods was compared in 31 normal subjects. At each of the two examinations, central corneal thickness was evaluated by an ultrasonic and an optical method. Reliability was assessed by an analysis of variance (ANOVA) between repeated measurements for the electronic digital and the Humphrey ultrasonic pachometers. The former revealed a systematic right-left difference, the left cornea being significantly thicker. This phenomenon has been observed in many studies and has been attributed to a measurement not done perpendicularly to the cornea. Angle-lambda measured on eight subjects was nasal in all cases. A very high correlation coefficient was obtained between the two methods of central pachometry and the results obtained for the right eye by these two methods were not significantly different. Also, a small but significant negative correlation was observed between the central corneal curvature and the corneal thickness as evaluated by either pachometer.

引用

页码：236 / 241

页数：6

共 33 条

[1]

Mishima S., Corneal thickness, Surv Ophthalmol, 13, pp. 57-96, (1968)

[2]

Salz J.J., Azen S.P., Berstein J., Caroline P., Villasenor R.A., Schanzlln D.J., Evaluation and comparison of sources of variability In the measurement of corneal thickness with ultrasonic and optical pachymeters, Ophthalmic Surg, 14, pp. 750-754, (1983)

[3]

Snyder A.C., Optical pachometry measurements: Reliability and variability, Am J Optom Physiol Opt, 61, pp. 408-413, (1984)

[4]

Binder P.S., Kohler J.A., Rorabaugh D.A., Evaluation of an electronic pachometer, Invest Ophthalmol Vis Scl, 16, pp. 855-858, (1977)

[5]

Mandell R.B., Poise K.A., Keratoconus: Spatial variation of corneal thickness as a diagnostic test, Arch Ophthalmol, 82, pp. 182-188, (1969)

[6]

Mishima S., Hedbys B.O., Measurement of corneal thickness with the Haag-Streit pachometer, Arch Ophthalmol, 80, pp. 710-713, (1968)

[7]

Chivers R.C., Round W.H., Zieniuk J.K., Investigation of ultrasound axially traversing the human eye, Ultrasound Med Biol, 10, pp. 173-188, (1984)

[8]

Coleman J.D., Lizzi F.L., Jack R.L., Ultrasonography of the eye and the Orbit, (1977)

[9]

Mlllodot M., The influence of pregnancy on the sensitivity of the cornea, Br J Ophthalmol, 61, pp. 646-649, (1977)

[10]

Offret H., Blanchard M., Saraux H., Pigne A., Barrat J., Pathologie ophtalmologique de la femme enceinte, J Fr Ophtalmol, 3, pp. 679-689, (1980)

← 1 2 3 4 →