The quantitative representation and analysis of astigmatism present difficulties for the
researcher. The case is made that the difficulties arise because of the way astigmatism is …

Summary The Canon Autoref R‐1 is an 'open‐field'autorefractor which has been widely
used for research purposes for the past 20 years, but is no longer manufactured. A new …

The aim of the thesis was to develop methods for assessment of surgically induced
astigmatism (SIA) in individual eyes, and in groups of eyes. The thesis is based on 12 peer …

PURPOSE: To develop methods for multivariate statistical analysis of spherocylinders and to
use these methods to compare autorefraction and manifest subjective refraction in 50 …

PURPOSE: To assess the surgical outcomes of appearance, vision, refraction, and graft
survival and integrity in patients with histologically proven limbal dermoid choristomata who …

Purpose: To provide a general approach to the analysis of refractive data that overcomes the
shortcomings of traditional treatments and can be easily adapted to most spreadsheets …

Objective: The purpose of the study was to develop methods for simultaneous description of
astigmatic direction and magnitude on aggregate data, with special reference to refractive …

Myopia is a global healthcare concern and effective analyses of dioptric power are important
in evaluating potential treatments involving surgery, orthokeratology, drugs such as low …

PURPOSE: To demonstrate techniques for analyzing astigmatism in the context of anterior
segment surgery. The techniques are applied to refractive and corneal astigmatism and to …

Purpose. Multivariate statistical and graphical methods were used to compare high, medium,
and low contrast visual acuities in right and left diabetic eyes with and without diabetic …