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Pattern of Contrast Sensitivity Changes in Acute Central Serous Chorioretinopathy
Preeyachan Lourthai1, Patama Bhurayanontachai1
1Department of Ophthalmology, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand.
Purpose:
To evaluate contrast sensitivity (CS) changes in acute central serous chorioretinopathy (CSC).
Methods:
Visual acuity (VA), CS, and subretinal fluid (SRF) were evaluated monthly for 6 months. Treatment was considered at 3 months in case of persistent SRF.
Results:
Twelve of 20 eyes (60%) had spontaneous SRF resolution within 4 months. Five of 8 patients with delayed SRF resolution received either focal laser or photodynamic therapy. The CS was impaired in all spatial frequencies at baseline. There was a negative correlation between the baseline SRF thickness and CS at 3 and 6 cycles per degree (cpd). The CS improved significantly at the time of fluid resolution (p = 0.001) and continued to improve in 3 and 6 cpd. The CS at 6 cpd did not recover if compared to a normal fellow eye at 6 months (p = 0.018). The CS of 12 cpd at 6 months was superior in the spontaneous resolution group.
Conclusion:
The impaired CS gradually improved as the SRF reduced at all spatial frequencies. CS at 3 and 12 cpd continued to improve after complete fluid resolution. Despite an excellent final VA, the CS at 6 months did not regain its normal value.
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