J Korean Ophthalmol Soc.  2007 Dec;48(12):1663-1669.

Correlation between Foveal Thickness and Visual Acuity in Unilateral Resolved Central Serous Chorioretinopathy

• Kim JK
• Chung IY
• Park JM
• Song JK

Abstract

PURPOSE: To evaluate the correlation between foveal thickness, as measured with optical coherence tomographic evaluation, and the visual acuity in patients who suffered from unilateral resolved central serous chorioretinopathy.
METHODS
Twenty-eight consecutive patients who were diagnosed with unilateral resolved central serous chorioretinopathy were studied. High-resolution optical coherence tomography was performed on all of the patients. The foveal thickness of the involved eye was normalized by dividing its thickness with that of the uninvolved eye. The best-corrected visual acuity of the involved eye was normalized as well. The subjects were divided into two groups according to the minimum value of the normalized foveal thickness in the 22 healthy subjects.
RESULTS
The mean foveal thickness was 128.68+/-22.06 micrometer in the involved eyes and 148.18+/-13.88 micrometer in the uninvolved eyes. There was a statistically significant correlation between the normalized foveal thickness and the normalized visual acuity. There were statistically significant differences in the normalized visual acuity and the duration of the symptoms between the group with foveal thickness above the minimum value and the group with foveal thickness below the minimum value.
CONCLUSIONS
There was a statistically significant correlation between foveal thickness and visual acuity. The patient group with a foveal thickness value above the minimum value of the normalized foveal thickness showed a statistically significant improvement in visual acuity and a shorter duration of symptoms. It seems that the foveal thickness is associated with visual acuity and the duration of symptoms.

Keyword

Central serous chorioretinopathy; Normalized foveal thickness; Optical coherence tomography

MeSH Terms

Central Serous Chorioretinopathy*
Humans
Tomography, Optical Coherence
Visual Acuity*

Figure

• 

  Figure 1. The normalized visual acuity, which was calculated by dividing the visual acuity of the involved eye by that of the uninvolved eye (expressed as a proportion), was plotted against the normalized foveal thickness, also expressed as a proportion (r=0.756, p<0.05, two-sample t-test).

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  Figure 2. Relationship between normalized foveal thickness and duration of symptoms (left) and best-corrected visual acuity (BCVA) and duration of symptoms (right) in 28 patients with unilateral resolved central serous chorioretinopathy. Regression analysis demonstrated a significant decrease in relation to the duration of symptoms of both BCVA (r=-0.716, p<0.05, t-test) and foveal thickness (r=-0.736, p<0.05, two-sample /-test).

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  Figure 3. (A) OCT scan of the involved eye (visual acuity, 0.3), foveal thickness is attenuated (95 μm). (B) In the uninvolved eye (visual acuity, 1.0), foveal thickness is 154 μm. The normalized foveal thickness is 0.617 and the normalized visual acuity is 0.3.

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  Figure 4. (A) The scan of the involved eye (visual acuity, 1.0). (B) The scan of the uninvolved eye. There is no difference between involved and uninvolved eye foveal thickness (138 μm, 142 μm). The normalized foveal thickness is 0.912, and the normalized visual acuity is 1.0.

Reference

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