Age-related Changes in Anterior, Posterior Corneal Astigmatism in a Korean Population.
10.3341/jkos.2017.58.8.911
- Author:
Yoon Seob SIM
1
;
Soon Won YANG
;
Yu Li PARK
;
Kyung Sun NA
;
Hyun Seung KIM
Author Information
1. Department of Ophthalmology and Visual Science, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. Sara514@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Astigmatism;
Cataract surgery;
Pentacam;
Toric intraocular lens
- MeSH:
Astigmatism*;
Cataract;
Cornea;
Hand;
Humans;
Lenses, Intraocular;
Methods
- From:Journal of the Korean Ophthalmological Society
2017;58(8):911-915
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate age-related changes in anterior and posterior corneal astigmatism in Koreans. METHODS: The anterior and posterior corneal astigmatisms of 160 subjects with age ranging from 11 to 92 years, none of whom experienced any complications, were measured with a rotating Scheimpflug camera (Pentacam®). Using this data, the changing proportions of with-the-rule to against-the-rule and changing tendency of anterior and posterior corneal astigmatisms with age were evaluated using polar value analysis according to the Naeser method. RESULTS: For the anterior cornea, the proportion of with-the-rule astigmatisms decreased with age (p < 0.0001). On the other hand, for the posterior cornea, the proportion of against-the-rule astigmatisms decreased with age (p = 0.012). In the polar value analysis, there was a trend toward against-the-rule astigmatism associated with increasing age for the anterior cornea (p < 0.0001) and toward with-the-rule astigmatism for the posterior cornea (p < 0.0001). CONCLUSIONS: In previous studies, the anterior corneal surface shifted from with-the-rule to against-the-rule astigmatism with increasing age, whereas the posterior corneal surface remained as against-the-rule astigmatism in most cases. But, our results showed that the proportion of against-the-rule astigmatisms of the posterior cornea decreased with age. Thus, evaluation of posterior corneal astigmatisms should be performed before cataract surgery in old patients, especially when using a multifocal or toric intraocular lens.
