Korean J Ophthalmol.  2013 Feb;27(1):44-47. 10.3341/kjo.2013.27.1.44.

The Correlation of Differences in the Ocular Component Values with the Degree of Myopic Anisometropia

• Kim SY
• Cho SY
• Yang JW
• Kim CS
• Lee YC

• KMID: 1501795
• DOI: http://doi.org/10.3341/kjo.2013.27.1.44

Abstract

PURPOSE
To determine the relationship between the differences in the ocular component values with the degree of anisomyopia.
METHODS
Refraction, corneal power (CP), and biometry were examined in 50 myopic adults with refractive differences (RD) over 1.50 diopters (D). Ocular components were measured by ultrasound biometry and keratometry. The correlation between the differences in the ocular component values with the degree of anisomyopia was analyzed by linear regression analysis.
RESULTS
Among 50 adults with anisomyopia, 5 had RD from 1.50 to 2.99 D, 11 had RD from 3.00 to 3.99 D, 9 had RD from 4.00 to 5.99 D, 12 had RD from 6.00 to 7.99 D, 7 had RD from 8.00 to 11.99 D, and 6 had > or =12.00 D. There was no significant correlation between the ocular components (CP, crystalline lens thickness [LT], and anterior chamber depth [ACD], and the length from the cornea to the posterior surface of the lens [ACD + LT]) and the RD (p > 0.05). The RD showed a significantly positive correlation with vitreous chamber depth (VCD), and axial length (r = 0.963, p < 0.0001).
CONCLUSIONS
The severity of anisomyopia was not correlated with the between-eye differences in the anterior chamber values of the eye (CP, ACD, LT, ACD + LT). The severity of anisomyopia was significantly correlated with the between-eye differences in VCD.

Keyword

Anisometropia; Axial length

MeSH Terms

Adult
Aged
Anisometropia/complications/physiopathology/*ultrasonography
Anterior Chamber/*ultrasonography
Female
Follow-Up Studies
Humans
Male
Microscopy, Acoustic/methods
Middle Aged
Myopia/complications/physiopathology/*ultrasonography
Refraction, Ocular
Retrospective Studies
Severity of Illness Index
Young Adult

Figure

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  Fig. 1 Correlation between differences of vitreous chamber depth and refractive errors in anisomyopia. D = diopters.

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  Fig. 2 Correlation between differences of axial length and refractive errors in anisomyopia. D = diopters.

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  Fig. 3 A comparison of ocular components between the smaller eye and the larger eye in anisometropia group 6. AL = axial length; ΔVCD = difference of vitreous chamber depth between both eyes; VCD = vitreous chamber depth; LT = lens thickness; ACD = anterior chamber depth; CP = corneal power.

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