Corneal Astigmatisms and Postoperative Visual Acuity View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2014

AUTHORS

Kimiya Shimizu

ABSTRACT

This chapter mainly deals with corneal astigmatism as a common type of astigmatism and postoperative visual acuity. Since moderate corneal astigmatism deteriorates retinal images, causing a decrease in visual performance and monocular diplopia, correction is important. The toric intraocular lens (IOL) is useful, and coping with axis shift is the key point. Since we encountered a patient with the long axial length and the with-the-rule astigmatism who showed a marked axis shift immediately after surgery, caution is necessary. Also, the toric phakic IOL and laser correction of astigmatism such as laser in situ keratomileusis (LASIK) and small incision lenticule extraction (SMILE) are useful in non-cataractous eyes with adequate accommodative power. The limbal relaxing incisions (LRIs) are safe, inexpensive, and require no special equipment such as lasers, although the correction effects of LRIs are inadequate. At present, avoidance of oblique astigmatism and a reduction of ocular astigmatism to 1.0 diopter (D) or less are important. In the future, consideration should also be given to the pupil diameter, posterior corneal astigmatism, and influences on pseudo-accommodation. More... »

PAGES

59-69

Book

TITLE

Cataract Surgery: Maximizing Outcomes Through Research

ISBN

978-4-431-54537-8
978-4-431-54538-5

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-4-431-54538-5_6

DOI

http://dx.doi.org/10.1007/978-4-431-54538-5_6

DIMENSIONS

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