J Korean Ophthalmol Soc.  2018 Feb;59(2):164-168. 10.3341/jkos.2018.59.2.164.

Myopia Progression of Full Correction and Undercorrection with Myopic Anisometropia

• Kim JH
• Kim CR
• Yoo JM

• KMID: 2403810
• DOI: http://doi.org/10.3341/jkos.2018.59.2.164

Abstract

PURPOSE
To investigate the change of refractive error between the full-correction and under-correction treatment groups of myopic anisometropic patients.
METHODS
This study included 36 patients who had no amblyopia with myopic anisometropia > 3.00 diopters (D) and less than 6.00 D using the cycloplegic refraction test. The patients were divided into two groups involving the full-correction of both eyes (group 1) or full-correction on the less myopic eye and under-correction with −0.50 D of the more myopic eye (group 2). We monitored refractive changes every 6 months for 24 months.
RESULTS
At the first visit, the mean refractive error of the less myopic eye was −0.68 ± 0.54 D and that of the more myopic eye was −4.22 ± 0.77 D in group 1. The mean refractive error of the less myopic eye was −0.75 ± 0.58 D and that of the more myopic eye was −4.36 ± 0.73 D in group 2. There was no significant difference between the groups (p = 0.713 and p = 0.585, respectively). At 24 months, the mean refractive errors of group 1 were −1.27 ± 0.54 D and −4.88 ± 0.81 D, respectively, and that of group 2 were 1.38 ± 0.54 D and −5.59 ± 1.01 D, respectively. The mean refractive error of the less myopic eyes showed no significant difference between both groups (p = 0.555), but that of the more myopic eyes was significantly different (p = 0.027). Between both groups, the degree of anisometropia at 24 months was 3.61 ± 0.60 in group 1 and 4.20 ± 0.86 in group 2. Group 2 showed a significant difference and more severe anisometropic changes (p = 0.022).
CONCLUSIONS
Full correction of myopic anisometropia without amblyopia is a better method for reducing the progression of anisometropia.

Keyword

Anisometropia; Full correction; Myopia progression; Undercorrection

MeSH Terms

Amblyopia
Anisometropia*
Humans
Methods
Myopia*
Refractive Errors

Figure

• 

  Figure 1 Changes in spherical equivalent refractive error of more myopic eyes. Full corrected patients (Group 1) were slower towards myopic progression than under corrected patients (Group 2). At 24 months, mean spherical equivalent was significantly difference between group 1 and group 2.

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  Figure 2 Changes in amount of anisometropia. Under corrected patients (Group 2) had more amount of anisometropia than full corrected patients (Group 1). At 24 months, there was significant difference between group 1 and group 2.

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