Abstract：
PURPOSE:To examine the influence of astigmatism on the visual acuity of patients with multifocal and monofocal intraocular lenses. METHODS:Thirty eyes of 30 patients who underwent five-zone refractive multifocal intraocular lens implantation and 30 eyes of 30 age-matched patients who had monofocal intraocular lens implantation were included. The visual acuities of these patients at 5.0, 3.0, 2.0, 1.0, 0.7, 0.5, and 0.3 m were measured by means of an all-distance vision tester after addition of a cylindrical lens of 0, 0.5, 1.0, 1.5, 2.0, and 2.5 diopters. RESULTS:Mean visual acuity at all distances decreased in proportion to the diopters of astigmatism in both the multifocal and monofocal intraocular lens groups. When astigmatism was 0.5, 1.0, or 1.5 diopters, distance visual acuity in the multifocal group was significantly worse than that in the monofocal group; with astigmatism of 2.0 diopters or more, intermediate visual acuity was also worse in the multifocal group. In contrast, near visual acuity in the multifocal group was significantly better than that in the monofocal group at all astigmatic diopters. When astigmatism was within 1.0 diopter, visual acuity in the multifocal group reached 20/29 at distance and 20/50 at near. Mean contrast sensitivity was also worse in the multifocal group than in the monofocal group. CONCLUSIONS:Both distance and intermediate visual acuity deterioration caused by astigmatism was greater with a multifocal intraocular lens than with a monofocal intraocular lens, whereas near visual acuity was better with the multifocal intraocular lens. When astigmatism was within 1.0 diopter, eyes with a multifocal intraocular lens achieved good visual acuity at both distance and near.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Hayashi K,Hayashi H,Nakao F,Hayashi Fdoi
10.1016/s0002-9394(00)00526-2subject
Has Abstractpub_date
2000-10-01 00:00:00pages
477-82issue
4eissn
0002-9394issn
1879-1891pii
S0002939400005262journal_volume
130pub_type
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journal_title：American journal of ophthalmology
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journal_title：American journal of ophthalmology
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journal_title：American journal of ophthalmology
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pub_type： 杂志文章
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pub_type： 杂志文章
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