Evaluation of bilateral minimum thickness of normal corneas based on Fourier-domain optical coherence tomography.

Purpose: To determine the normative ranges and various aspects of the relationship between the minimum corneal thicknesses (MCT) in fellow eyes and the location of the MCT in relation to the central cornea using Fourier-domain optical coherence tomography (OCT).

Setting: Tertiary care ophthalmic hospital, Chennai, India.

Methods: In this cross-sectional observational trial, both eyes of consecutive healthy young subjects with a low refractive error and no clinical or topographic evidence of corneal disorders had bilateral pachymetric assessment with a Fourier-domain OCT platform (RTVue).

Predictive factor analysis for successful performance of iris recognition-assisted dynamic rotational eye tracking during laser in situ keratomileusis.

Purpose: To analyze the predictive factors associated with success of iris recognition and dynamic rotational eye tracking on a laser in situ keratomileusis (LASIK) platform with active assessment and correction of intraoperative cyclotorsion.

Design: Interventional case series.

Methods: Two hundred seventy-five eyes of 142 consecutive candidates underwent LASIK with attempted iris recognition and dynamic rotational tracking on the Technolas 217z100 platform (Techolas Perfect Vision, St Louis, Missouri, USA) at a tertiary care ophthalmic hospital.