Purpose: To evaluate optical and visual quality in the peripheral retina in pseudophakic patients implanted with a new type of inverted meniscus intraocular lens (IOL).
Methods: One month after cataract surgery, in 87 eyes implanted with the (ArtIOL_Art25 IOL, peripheral contrast detection sensitivity was measured psychophysically at 40° visual angle, both horizontally and vertically, and compared with a control group of 51 eyes implanted with standard biconvex IOLs. Thirty-one eyes with the Art25 IOL and 28 eyes from the control group were randomly selected to also measure peripheral optical quality using a scanning Hartmann-Shack wavefront sensor along 80° in the horizontal meridian.
Results: Peripheral contrast detection sensitivity was significantly better (P < .01) in the group with the Art25 IOL in both directions (7.78 ± 3.24 vs 5.74 ± 2.60 vertical, 10.98 ± 5.09 vs 7.47 ± 3.96 horizontal), which was in agreement with the optical quality improvement in the periphery due to a reduction of defocus (1.97 and 1.21 diopters [D] at 40° temporal and nasal sides) and astigmatism (1.17 and 0.37 D at 40° temporal and nasal sides) that was statistically significant (P < .01) from 20° of eccentricity.
Conclusions: Patients implanted with the inverted meniscus IOL present a reduced amount of peripheral defocus and astigmatism compared to patients implanted with standard biconvex IOLs. This improvement in optical quality leads to better contrast sensitivity in the periphery. In addition, the inverted meniscus design also eliminated negative dyrphotopsias.