Purpose. To evaluate contrast sensitivity (CS) changes in acute central serous chorioretinopathy (CSC). Methods. Visual acuity\n(VA), CS, and subretinal fluid (SRF) were evaluated monthly for 6 months. Treatment was considered at 3 months in case of\npersistent SRF. Results. Twelve of 20 eyes (60%) had spontaneous SRF resolution within 4 months. Five of 8 patients with\ndelayed SRF resolution received either focal laser or photodynamic therapy. The CS was impaired in all spatial frequencies at\nbaseline. There was a negative correlation between the baseline SRF thickness and CS at 3 and 6 cycles per degree (cpd). The CS\nimproved 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\nnot 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\nspontaneous resolution group. Conclusion. The impaired CS gradually improved as the SRF reduced at all spatial frequencies.\nCS at 3 and 12 cpd continued to improve after complete fluid resolution. Despite an excellent final VA, the CS at 6 months did\nnot regain its normal value.
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