Optical coherence tomography (OCT) is the most promising imaging technique used in ophthalmology today. Noninvasive, noncontact and having quick image acquisition makes OCT a requirement in ophthalmology practice. OCT can be used to gain cross-sectional images of the anterior and posterior segment of the eye. In cornea and refractive surgery anterior segment OCT (AS-OCT) is used in presurgical planning and postsurgical evaluation. AS-OCT is especially needed in phakic intraocular lens implantation, laser-assisted in situ keratomileusis enhancement and lamellar keratoplasty. There are also various promising advancements in AS-OCT imaging, such as intraoperative OCT and ultra-high-resolution OCT. These techniques offer new therapeutic and diagnostic options with increased resolution and improved scanning time.
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