The pressure of OVDs in cataract surgery

Session Details

Session Title: Cataract Surgery: Special Cases

Session Date/Time: Tuesday 17/09/2019 | 08:30-10:30

Paper Time: 09:00

Venue: Free Paper Forum: Podium 2

First Author: : S.Arshinoff CANADA

Co Author(s): :                                 

Abstract Details

Purpose:

To study the rheological profiles of ophthalmic viscosurgical devices (OVDs) to determine the different intraocular pressures under which surgeons operate based upon their choice of OVD, which is a function of the OVDs ability to resist burping out of an open incision, and then to assess what types complications are most likely in different pressure environments during cataract surgery and how to deal with them.

Setting:

York Finch Eye Associates and University of Toronto, Toronto, Canada.

Methods:

OVD rheology was studied for different classes of OVDs. Surgical methods were divided by the pressure under which the surgeon will be operating with different OVDs into high, moderate and very low. Potential complications were assessed based upon under what level of intraocular pressure they are most likely to occur. Strategies were then developed to avoid those complications.

Results:

Successful phacoemulsification and FLACS surgeries depend upon intraocular pressure at some critical stages of surgery, and different OVDs are better in sustaining that pressure that others. Both phaco and FLACS are safer and more effective when pressure dependence is taken into consideration, and adaptations are made. Argentinean Flag sign, for example is avoided by performing surgery under high pressure. Other, different examples will also be shown for phaco and FLACS.

Conclusions:

Attention to the pressure environment under which cataract surgery is performed assists in reducing the frequency of and managing complications.

Financial Disclosure:

receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, receives consulting fees, retainer, or contract payments from a competing company