Posters

Intraocular pressure variations during LASIK surgery assisted by femtosecond lasers

Poster Details

First Author: C.Bouza Miguens SPAIN

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

Abstract Details

Purpose:

Intraocular pressure variations during LASIK surgery are different depending on the microqueratome used , if it is mechanical or it is a femtosecond laser.In this study it is analized differences between intraocular pressure variations with two femtosecond lasers which use different interfaces.

Setting:

Novovisión Clinics and European University of Madrid.

Methods:

Experimental , prospective and comparative study in animal model.A total of fourteen eyes are divided into two groups of seven eyes each : the VICTUS® group , using a femtosecond laser with a non applanation patient interface , and the INTRALASE®group , using a femtosecond laser with an applanation patient interface.Intraocular pressure variations are registered in each eye through a 27-gauge needle connected to anterior chamber with an external transducer.

Results:

There is a mean increase of intraocular pressure in LASIK assisted by femtosecond laser during ocular suction phase of 92,14±17,95 mmHg in the VICTUS® group compared with 78,10±21,78 mmHg in the INTRALASE® group (p>0,05).During flap creation , there is a mean increase of intraocular pressure of 92,36±18,75 mmHg in the VICTUS® group compared with 120,18±18,12 mmHg in the INTRALASE®group (p<0,05). Mean ocular suction time is 37,14±4,9 seconds in the VICTUS® group compared with 40±8,86 seconds in the INTRALASE® group (p>0,05).Mean corneal flap cutting time is 32,29±1,6 seconds in the VICTUS® group compared with 52,86±5,25 seconds in the INTRALASE® group (p<0,05).

Conclusions:

There is an intraocular pressure increase during LASIK assisted by both femtosecond lasers .Intraocular pressure increase is greater during corneal flap cutting phase with INTRALASE® laser , as well as corneal flap cutting time and total procedure time. FINANCIAL DISCLOUSRE: NONE