Relationship between central and peripheral corneal astigmatism in elderly patients View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-06

AUTHORS

Takushi Kawamorita, Kimiya Shimizu, Rie Hoshikawa, Kazutaka Kamiya, Nobuyuki Shoji

ABSTRACT

We investigated the relationship between central and peripheral corneal astigmatism in elderly patients. Seventy-six eyes of 76 elderly subjects (mean age = 72.6 ± 3.0 years) were included in the study. Corneal shape was evaluated using the Pentacam HR (Oculus, Wetzlark, Germany), which is comprised of a rotating Scheimpflug camera and a short-wavelength slit light. The power distribution map was selected and corneal astigmatism was calculated using front K-Readings in zones centered on the pupil. Analyzed zones were 2.0–6.0 mm in diameter. Corneal astigmatism decreased as diameter increased, similar to what was observed in eyes with with-the-rule astigmatism and against-the-rule astigmatism (ANOVA, p < 0.01). This effect was more pronounced in eyes with a large central corneal astigmatism (Spearman’s rank-correlation coefficient test, r = 0.51, p < 0.01). There was no change as to axis of corneal astigmatism (ANOVA, p = 0.98). These results suggest that the relationship between central and peripheral corneal astigmatism should be taken into consideration to optimize vision when astigmatic correction is needed. More... »

PAGES

336-339

Journal

TITLE

Optical Review

ISSUE

3

VOLUME

25

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10043-018-0427-2

DOI

http://dx.doi.org/10.1007/s10043-018-0427-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1101516052


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