Korean J Ophthalmol.  2012 Oct;26(5):324-330. 10.3341/kjo.2012.26.5.324.

Correlations between Magnitude of Refractive Error and Other Optical Components in Korean Myopes

• Lee S
• Kim B
• Oh TH
• Kim HS

• KMID: 1397482
• DOI: http://doi.org/10.3341/kjo.2012.26.5.324

Abstract

PURPOSE
We evaluated ocular optical components and their interrelationships in myopic Korean patients.
METHODS
In this prospective observational study, 1,011 consecutive patients were recruited from a refractive surgery clinic. The best-corrected visual acuity was >20 / 20 in all patients. The refractive error, axial length (AL), anterior chamber depth (ACD), lens thickness (LT), and vitreous chamber depth (VCD) were measured by an autorefractor and partial coherence laser interferometry (IOL Master). Central corneal thickness (CCT) was measured by ORBscan II topography.
RESULTS
The refractive errors had a positive correlation with LT but negative correlations with AL, ACD, VCD, and CCT. As the axial length increased, the ACD, VCD, and CCT increased but the LT decreased. The CCT had a positive correlation with gender, refractive errors, ACD, VCD, and AL but no correlation with age. The mean CCT was increased in proportion to the increase in AL.
CONCLUSIONS
In myopic Korean patients, as axial elongation progressed, the VCD and ACD deepened and the CCT thickened but the LT decreased. The CCT had a positive correlation with the degree of myopia and the AL.

Keyword

Axial length; Central corneal thickness; Koreans; Myopia; Refractive errors

MeSH Terms

Adult
Female
Humans
Male
Middle Aged
Myopia/*epidemiology/therapy
Prospective Studies
Refractive Errors/*epidemiology/therapy
Republic of Korea/epidemiology
Visual Acuity

Figure

• 

  Fig. 1 The regression of central corneal thickness (CCT) to axial length (AL). CCT showed a positive correlation with AL.

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  Fig. 2 The histogram of central corneal thickness (CCT). The histogram of CCT showed a nearly normal distribution. To demonstrate the linear correlation between CCT and axial length, the CCT must have a normal distribution.

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