title: Correlation of axial length and corneal curvature with diopter in eyes of adults with anisometropia.
abstract: OBJECTIVE
  To analyze the causes of anisometropia.
  
  
  METHODS
  Between June 2011 and November 2012 101 participants were divided into three groups. The refraction comprising the degree of refractive errors in the presence of astigmatism which was converted into the degree of spherical equivalent as well as ocular axial length (AL), corneal curvature (CR), average corneal power (ave K) and diopters were measured.
  
  
  RESULTS
  The differences of ocular AL/CR and CR between two eyes were statistically significant among the three groups (P < 0.05). Standardized regression coefficients obtained by a multiple linear regression analysis indicated that AL/CR, AL and ave K differences correlated with anisometropia in descending order.
  
  
  CONCLUSIONS
  The difference of AL/CR ratios between the eyes was the main cause for anisometropia, followed by AL and ave K values.
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zeng
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Cui
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Xie
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Zhongming
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, Guangdong Eye Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences 106 Zhongshan Er Road, Guangzhou 510080, China.
authors.forename: Qianli
authors.initials: Q
authors.lastname: Meng
keywords: Axial length; anisometropia; average corneal power; corneal curvature; diopter