Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance
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10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits

 

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Analysis of the intraocular pressure rise during femtolaser-assisted flap creation: a comparison of three different FS platforms

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Session Details

Session Title: Moderated Poster Session: Hot Topics in Refractive Surgery

Session Date/Time: Saturday 10/09/2016 | 14:00-15:00

Paper Time: 14:30

Venue: Poster Village: Pod 1

First Author: : C.Bouza SPAIN

Co Author(s): :    A. Rodero   G. Bolivar   C. Villa   M. Teus     

Abstract Details

Purpose:

To compare the real intraocular pressure rise during flap creation (for FS-LASIK), using three different femtosecond platforms; a curved applanation patient interface with an automatic suction pump device (Lensex® Alcon), a flat applanation patient interface with manual suction laser (iFs®, AMO), and a curved applanation patient interface with an automatic suction pump platform (Victus®, Bausch & Lomb).

Setting:

Clínica Novovisión, Madrid, Spain. Universidad Europea de Madrid, Spain, and Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.

Methods:

This is an experimental, comparative study in a validated animal model (freshly enucleated porcine eyes). 21 eyes were analyzed, divided in 3 groups of 7 eyes each, one using the Ifs®, other group using the Victus®, and the last one with the Lensex®. The intraocular pressure rise was measured and recorded in each eye with a reusable blood pressure transducer connected to the anterior chamber by direct cannulation. Intraocular pressure was measured every 5 seconds from the start of suction on the eye till the end of flap creation.

Results:

We found a mean intraocular pressure rise during suction of 20±5.29 mmHg in the Lensex®, 78.14±23.62 mmHg in the Intralase iFs®, and 20.28±6.65 mmHg in the Victus® (p=0.001 between the iFs and the others). The mean intraocular pressure rise during applanation was 20±5.29 mmHg in the Lensex®, 108.14±16.97 mmHg in the Intralase iFs®, and 96.42±16.83mmHg in the Victus® group (p=0.001 between Lensex and the others). Differences in the total duration of the procedure were statistically significant for all lasers, 17.2±0.6 seconds in the Lensex® group, 25.1±4.2 seconds for the Intralase iFs®, and 33.4±3.1 seconds for the Victus® group (p=0,01).

Conclusions:

The intraocular pressure rise during flap creation is lower when the Lensex® laser is used, furthermore, the mean intraocular pressure rise during the suction and applanation phases are the same with this laser. Suction induced IOP rise is lower with the Victus than with the iFs, but after applanation, both devices induce a similar IOP increase.

Financial Disclosure:

NONE

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