Lens design critical in preventing PCO

Square-edged design and the sharpness of the posterior edge key to PCO

Lens design critical in preventing PCO
Dermot McGrath
Dermot McGrath
Published: Monday, May 13, 2019
[caption id="attachment_15046" align="alignleft" width="640"] Gilles Lesieur MD[/caption] Intraocular lens design was found to be the key determining factor in the rate of posterior capsular opacification (PCO) development in a large series of microincision cataract surgery (MICS) lenses, according to a study. At the meeting of the French Society of Ophthalmology, Gilles Lesieur MD presented the analysis of a large series of 6,500 lenses with up to eight years’ follow-up. “Although we know that PCO is multifactorial and that surgical technique, IOL biomaterial and patient characteristics may all play a role, the key factors in its development seem to be the presence of a square-edged design and the sharpness of the posterior edge of the optic,” he said. Dr Lesieur’s retrospective analysis included seven different MICS lens types: CT Asphina (Zeiss), Micro AY, MicroSlim and Micropure (PhysIOL), Akreos MICS (Bausch and Lomb), Incise (Bausch and Lomb) and Synthesis (Cutting Edge). The Akreos MICS was found to have the highest rate of Nd: YAG laser capsulotomy over the eight-year follow-up period. “This is perhaps due to the design of the lens, with excessive polishing of the optic edges presenting less of a barrier to lens epithelial cell migration,” he said. The MicroSlim, with its uninterrupted square-edge optic, recorded the lowest rate of PCO, noted Dr Lesieur, while the CT Asphina’s plate haptic design with a square edge only delayed PCO for the first three years with Nd:Yag rates increasing thereafter.
Tags: microincision cataract surgery, posterior capsular opacification
Latest Articles
Towards a Unified IOL Classification

The new IOL functional classification needs a strong and unified effort from surgeons, societies, and industry.

Read more...

The 5 Ws of Post-Presbyopic IOL Enhancement

Fine-tuning refractive outcomes to meet patient expectations.

Read more...

AI Shows Promise for Meibography Grading

Study demonstrates accuracy in detecting abnormalities and subtle changes in meibomian glands.

Read more...

Are There Differences Between Male and Female Eyes?

TOGA Session panel underlined the need for more studies on gender differences.

Read more...

Simulating Laser Vision Correction Outcomes

Individualised planning models could reduce ectasia risk and improve outcomes.

Read more...

Mastering IOL Exchange

Tips and tricks for an uncomplicated replacement procedure.

Read more...

Need to Know: Aberrations, Aberrometry, and Aberropia

Understanding the nomenclature and techniques.

Read more...

When Is It Time to Remove a Phakic IOL?

Close monitoring of endothelial cell loss in phakic IOL patients and timely explantation may avoid surgical complications.

Read more...

Delivering Uncompromising Cataract Care

Expert panel considers tips and tricks for cataracts and compromised corneas.

Read more...

Organising for Success

Professional and personal goals drive practice ownership and operational choices.

Read more...