Purpose: To study contrast sensitivity changes in conjuctivochalasis patients.

Materials and Methods: Seventeen patients (29 eyes) with conjuctivochalasis and sixteen subjects (26 eyes) without conjuctivochalasis underwent a series of examinations. Contrast sensitivity test and corneal surface irregularity were fulfilled with the aid of special machines. All participants filled out ocular surface disease index. Clinical data such as blinking frequency, tear film break up time, Schirmer’s I test value, corneal fluorescein staining score and Marx line score were recorded.
Results: OSDI scores were higher in conjuctivochalasis patients than in controls (P=0.000). Tear film break up time was lower in conjuctivochalasis patients than in controls (P=0.000) and corneal fluorescein staining scores (P=0.000), corneal surface irregularity (P=0.022) were higher in conjuctivochalasis patients than in controls. The Schirmer’s I test values without anesthesia (P=0.262), blinking frequency (P=0.466) did not show significant difference between patients and controls. ML scores in conjuctivochalasis patients were higher than controls (P=0.000). Under all illuminating conditions, conjuctivochalasis patients had significantly lower contrast sensitivity than controls. Fluorescein staining score was the only factor that shown significant correlation with contrast sensitivity. 

Conclusions: Contrast sensitivity decreased in conjuctivochalasis patients and only eyes with fluorescein staining would have this impact.