OCT-Assisted Femtosecond-Laser Cataract Surgery

OCT-Assisted Femtosecond-Laser Cataract Surgery
Author(s):    Hui Sun
Published:   2017
DOI:             10.1117/3.2272479
eISBN: 9781510610859
Description:

Multiple commercial femtosecond lasers have been cleared for use by the US Food and Drug Administration for ophthalmic surgery, including the creation of corneal flaps in LASIK surgery. Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). The combination of femtosecond laser surgery and OCT imaging is useful to provide simultaneous guide to the development of next generation femtosecond surgical lasers in cataract surgery and to explore novel femtosecond laser surgical strategies. This Spotlight explains the principles of OCT-guided femtosecond laser cataract surgery.

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We obtain more than 80% of our information from the external world through vision. Good vision depends on the cornea and lens as refractive components. The crystalline lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. Maintenance of the lenticular shape and transparency is critical for refraction. The lens accounts for about one-third of the total refractive power of the eye. A slight change in the lenticular contour can result in refractive error. Small changes in the transparency or the shape of the lens can also cause visual distortion.

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