COMPARISON OF DIOPTRIC POWER

被引:11
作者
HARRIS, WF
机构
[1] Department of Optometry, Rand Afrikaans University, Johannesburg, 2000
关键词
D O I
10.1111/j.1475-1313.1990.tb00976.x
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
The important formal process of inferring properties of populations from statistics of samples requires a method by which variables can be compared or ranked. A suitable method of comparing dioptric powers is described. The method recognizes the essentially four‐dimensional nature of dioptric power and is sufficiently general to allow for comparison of powers (for example, equivalent powers of general thick bitorics) that cannot be represented in the usual manner, sphere/cylinder × axis. Copyright © 1990, Wiley Blackwell. All rights reserved
引用
收藏
页码:200 / 202
页数:3
相关论文
共 17 条
[1]  
Saunders H., The algebra of sphero‐cylinders, Ophthal. Physiol. Opt., 5, pp. 157-163, (1985)
[2]  
Saunders H., Transformation of sphero‐cylinders. I. Ranking procedure, Ophthal. Physiol. Opt., 5, pp. 313-325, (1985)
[3]  
Saunders H., Transformation of sphero‐cylinders. II. Mean, variance and standard deviation, Ophthal. Physiol. Opt., 5, pp. 327-332, (1985)
[4]  
Keating M.P., On the use of matrices for the mean value of refractive errors, Ophthal. Physiol. Opt., 3, pp. 201-203, (1983)
[5]  
Harris W.F., The matrix representation of dioptric power. Part 3: The average refractive error, S. Afr. Optom., 48, pp. 81-88, (1989)
[6]  
Harris W.F., Direct, vec and other squares, and variance‐covariance of dioptric power, Ophthal. Physiol. Opt., 10, pp. 72-80, (1990)
[7]  
Saunders H., Author's reply, Ophthal. Physiol. Opt., 2, pp. 88-91, (1982)
[8]  
Keating M.P., A system matrix for astigmatic optical systems: I. Introduction and dioptric power relations, Am. J. Optom. Physiol. Opt., 58, pp. 810-819, (1981)
[9]  
Keating M.P., A system matrix for astigmatic optical systems: II. Corrected systems including an astigmatic eye, Am. J. Optom. Physiol. Opt., 58, pp. 919-929, (1981)
[10]  
Keating M.P., Advantages of a block matrix formulation for an astigmatic system, Am. J. Optom. Physiol. Opt., 59, pp. 851-857, (1982)