This article is more than 5 years old. Information may no longer be current.

Aspheric IOL significantly improves contrast sensitivity in scotopic conditions

Am J Ophthalmol. 2009;147(6):984-989.

Add topic to email alerts

Receive an email when new articles are posted on

Please provide your email address to receive an email when new articles are posted on .

Subscribe

Added to email alerts

You've successfully added to your alerts. You will receive an email when new content is published.

Click Here to Manage Email Alerts

You've successfully added to your alerts. You will receive an email when new content is published.

Click Here to Manage Email Alerts

Back to Healio

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com.

Back to Healio

A silicone aspheric IOL significantly diminished ocular spherical aberration and enhanced scotopic contrast sensitivity, according to a study.

"Contrast sensitivity under photopic and mesopic conditions was not different between IOLs, but contrast sensitivity under scotopic conditions was significantly better with aspherical IOLs than with spherical IOLs (P < .01) at all measurement points," the study authors said.

The prospective randomized study included 62 eyes of 31 patients who underwent bilateral cataract surgery. Patients received a Tecnis Z9000 silicone aspheric IOL (Abbott Medical Optics) in one eye and a CeeOn 911A silicone spherical IOL (AMO) in the other eye.

Best corrected visual acuity, corneal and ocular wavefront aberrations, contrast sensitivity in low, medium and bright light, IOL decentration and tilt, and posterior capsular opacification were assessed at 1, 3, 6 and 12 months postop. Visual acuity at all distances was assessed at 3 months.

The aspheric IOL showed significantly lower fourth-order ocular wavefront aberrations than the spherical IOL at all follow-up intervals, but not in the third-order. Results showed no significant difference in third- and fourth-order corneal wavefront aberrations.

Data showed the IOLs yielded no appreciable differences in BCVA, degree of decentration and tilt, amount of PCO and all-distance visual acuity, the authors said.