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Pinhole intraocular lens to correct presbyopia and astigmatism in eye with regular and irregular cornea: 4 year follow-up

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First Author: M.Piovella ITALY

Co Author(s):    B. Kusa   G. Scaltrini                 

Abstract Details

Purpose:

To demonstrate visual performance of the IC-8 small aperture IOL (AcuFocus, Irvine, CA) implanted in patients in whom a cataractous lens has been removed. Pinhole IOLs technology demonstrated to be the best available technology to be implanted in patients that have experienced previous RK or with irregular corneal astigmatism

Setting:

CMA - Centro Microchirurgia Ambulatoriale, MONZA, Italy

Methods:

21 Eyes with cataract, corneal astigmatism ≤ 1.25,had IC-8 IOL implantation in the non-dominant eye and a monofocal IOL in the dominant eye. Postoperatively,visual and refractive parameters were measured: distance(4m)near(40cm)and intermediate(80 cm)visual acuity, corneal topography and Acutarget analysis, contrast sensitivity and defocus curve. Follow-up examinations were performed up to 4 years

Results:

Pinhole effect was well known since Egyptian first dynasty. It is surprising as a simple optical concept create efficient benefits for cataract patients to overcome presbyopia weak points and to make easy astigmatism management without depending by the high tech toric lens management. The IC8 musk decreases halos and glare in aberrate cornea At 4 years in the IC-8 eye,UDVA is 20/20.5,UIVA is 20/19 at 80cm and 67 cm and UNVA is 20/20.5.In the monofocal eye,UDVA is 20/19,UIVA is 20/23 at 80cm 20/25.7 at 67cm and UNVA is 20/50.Binocular UDVA is 20/18,UIVA is 20/18.3(80 cm and 67cm)and UNVA is 20/20.5

Conclusions:

Small aperture IOL provides near vision and astigmatism correction up to 2 D also if implanted only in the non dominant eye. Pinhole effect is not distance monovision because minimum far vision with IC8 was 20/25 Pinhole effect normally corrects up to two diopters of corneal astigmatism and overcome toric IOL management within this range

Financial Disclosure:

... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... receives consulting fees, retainer, or contract payments from a competing company