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Fig. 5 | BMC Ophthalmology

Fig. 5

From: Investigation of predictability and influence factors of the achieved lenticule thickness in small incision lenticule extraction

Fig. 5

Bland–Altman charts displaying the difference between Scheimpflug Imaging and Ultrasound. In virgin and post-SMILE refractive surgery corneas, Bland–Altman charts displaying the difference for central corneal thickness measurements. The pupil center and corneal vertex were selected as the 2 locations for measurement calculation on Pentacam. A negative difference indicates a thinner reading on Pentacam compared to ultrasound. Bias ±95% limits of agreement are displayed (Table 3). (CCT: central corneal thickness)

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