J Korean Ophthalmol Soc.  2010 Oct;51(10):1305-1311.

The Influence of Factors Before Wearing Reverse-Geometry Lens on Visual Acuity After Wearing Reverse-Geometry Lens

• Kim SH
• Lee JH
• Kim CS

Abstract

PURPOSE
To determine whether patient factors (pre-fitting patient's data) before reverse-geometry lens (RGL) use could be predicting factors for the increase in visual acuity after RGL use.
METHODS
The authors reviewed out patient records of 805 eyes of 423 patients wearing RGLs from March 2003 to May 2009. The relationship between patient factors on UVA before wearing a RGL examined at follow-ups and the IVA after wearing a RGL were analyzed.
RESULTS
The spherical refractive errors and the cylindrical refractive errors showed statistically significant results (p < 0.05). The lower was the refractive error, the greater were the UVA and IVA results. Correlations existed between the corneal astigmatism and UVA or IVA at three months (p < 0.05). The lower was the corneal astigmatism, the greater were the UVA and IVA results. Correlations were observed between the initial visual acuity and IVA, although the initial visual acuity cannot be a predictor. The other factors evaluated did not show statistically significant results (p > 0.05).
CONCLUSIONS
The refractive error and the corneal astigmatism may be strong predictors of UVA and IVA after RGL use.

Keyword

Corneal astigmatism; Patients' data; Refractive error; Reverse-geometry lens

MeSH Terms

Astigmatism
Eye
Follow-Up Studies
Humans
Refractive Errors
Visual Acuity

Figure

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  Figure 1. The ideal fluorescein pattern during follow-up period: 3- to 5-mm central bearing, narrow but brilliant secondary pooling ring, wide heavy mid-peripheral bearing ring, and well centered lens, and 1- to 2-mm movement after the blink.

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  Figure 2. The ideal topographic pattern during follow-up period: well centered Bull's eye pattern.

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  Figure 3. The mean uncorrected visual acuity (logMAR) at initial day and 1 day; 1, 2 weeks; 1, 3 months after wearing reverse-geometry lens (p<0.05†). *logMAR VA = uncorrected visual acuity (logMAR); †: paired t-sample test.

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  Figure 4. The mean increase of uncorrected visual acuity (logMAR) during follow-up period from initial day to 1 day; 1, 2 weeks; 1, 3 months after wearing reverse-geometry lens (p<0.05†).* logMAR IVA=the mean increase of uncorrected visual acuity (logMAR); †: paired t-sample test.

Reference

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