Quality of image of grating target during vitrectomy in model eyes implanted with multifocal intraocular lenses

Session Details

Session Title: Presented Poster Session: Combined Cataract Surgery & Cataract Surgery Complications

Venue: Poster Village: Pod 1

First Author: : K.Morii JAPAN

Co Author(s): :    F. Taketani   S. Miura   T. Otsuka   H. Kubotani   A. Akashi   R. Fujiwara        

Abstract Details

Purpose:

To evaluate the quality of the image of a grating target placed in a model eye implanted with diffractive multifocal intraocular lenses(IOLs)  through visualization systems for vitrectomy.

Setting:

Laboratory investigation.

Methods:

A monofocal IOL ZCB00 or a diffractive multifocal IOL( ZKB00, ZLB00 or ZMB00)  was implanted in a fluid-filled model eye. On the posterior surface of the model eye, A United States Air Force resolution target was placed. Image photos were taken with a digital camera through a surgical microscope,with a flat contact lens(HHV 1d) in the cornea or with a non-contact wide-angled viewing system(Resight700,front lens +128D). The contrasts of the gratings were calculated using a software and compared among IOL models.

Results:

There was no statistical difference in the  contrasts of grating images among IOL models through a non-contact wide angle viewing systems. However, the contrast of the gratings through a flat contact vitrectomy lens significantly decreased in eyes implanted with all three types of multifocal IOLs. In addition, a positive correlation was suggested between the decrease in the contrast of the grating and the near additional power in multifocal IOLs.

Conclusions:

Diffractive multifocal IOLs blur the grating target but less with the wide-angle viewing system. The diffravtive multifocal optical zone may influence the quality of image through a flat contact lens.

Financial Disclosure:

None