当前位置： SCI文献检索 > JOURNAL OF CATARACT AND REFRACTIVE SURGERY期刊下所有文献 > Spatial resolution threshold in pseudophakic patients with monofocal and multifocal intraocular lenses.

Spatial resolution threshold in pseudophakic patients with monofocal and multifocal intraocular lenses.

Abstract：

PURPOSE:To compare the spatial resolution threshold in the central visual field of pseudophakic patients with monofocal and multifocal intraocular lenses (IOLs). SETTING:Eye Clinic, University of Trieste, Italy. METHODS:Twenty phakic normal subjects and four groups of 20 pseudophakic patients each, implanted with refractive and diffractive multifocal IOLs (Domilens Progress 1, AMO Array MPC25NB, or Pharmacia 811X) or with monofocal IOLs (Allergan PC43NB), were studied. The spatial resolution threshold in the central visual field was assessed using high-pass resolution perimetry. Measurements were performed adding spherical correction to test the different foci of the IOL. RESULTS:No significant differences between phakic subjects and pseudophakic patients with monofocal IOLs were found. In distance vision, no significant differences between patients with refractive multifocal IOLs and those with monofocal IOLs were found. The group with the diffractive multifocal IOL showed a significantly higher spatial resolution threshold (P = .003). In intermediate vision, the AMO Array group showed a significantly lower spatial resolution threshold than the other groups (P < .01). The best performance at near distance was in the diffractive group, which was statistically significantly different from the other groups (P < .001). CONCLUSION:In the diffractive group, the high spatial resolution threshold in distance vision could be explained by the lower brightness of the principal focus, related to a different light energy division between the foci. In the Domilens group, the high spatial resolution threshold in near vision could be related to the light energy scattered in a large number of foci.

journal_name

J Cataract Refract Surg

journal_title

Journal of cataract and refractive surgery

authors

Ravalico G,Parentin F,Pastori G,Baccara F

doi

10.1016/s0886-3350(98)80206-x

subject

Has Abstract

pub_date

1998-02-01 00:00:00

pages

244-8

issue

2

eissn

0886-3350

issn

1873-4502

pii

S0886-3350(98)80206-X

journal_volume

24

pub_type

杂志文章

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