Table 3: Thinnest corneal thickness measured by spectral-domain optical coherence tomography between eyes with and without lid speculum.

With lid speculum
(range) (microns)
Without lid speculum
(range) (microns)
value

Baseline
(400–480)

(395–418)
0.236
After epithelial removal
(368–430)

(356–392)
After 30 minutes of riboflavin
(249–298)

(282–341)
Total percentage of reduction % %0.100

TCT: thinnest corneal thickness; USP: ultrasound pachymetry; SDOCT: spectral-domain optical coherence tomography.