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Bifocal IOL yields good near and distance visual acuity in hyperopic patients
Am J Ophthalmol. 2009;148(2):214-220.
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Bilateral implantation of a bifocal IOL offered similar quality and range of vision in patients with high, low and moderate hyperopia, a study showed.
An earlier study showed the Acri.LISA 366D IOL (Carl Zeiss Meditec) offered full range of vision and satisfactory near, intermediate and distance visual acuity, the study authors said.
"However, to our knowledge, no studies have been performed to assess the visual quality of this new IOL in a population with hyperopia," they said.
The prospective, nonrandomized study included 170 eyes of 85 patients assigned to two groups. The first group comprised 100 eyes of 50 patients with low to moderate hyperopia, with IOL power of 21 D to 24.5 D. The second group included 70 eyes of 35 patients with high hyperopia, with IOL power of 25 D to 36 D.
At 6 months postop, mean monocular logMAR best corrected visual acuity was 0.031 in the low to moderate hyperopia group and 0.051 in the high hyperopia group. Mean monocular logMAR best corrected near visual acuity was 0 in the low to moderate hyperopia group and 0.003 in the high hyperopia group.
Mean binocular logMAR BCVA was 0.008 in the low hyperopia group and 0.018 in the high hyperopia group. Differences between groups were not statistically significant.
Both groups also had similar monocular and binocular contrast sensitivity at all frequencies.