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Evaluation of novel planning settings in the reduction of opaque bubble layer in LASIK flaps created with the FS200 femtosecond laser

Poster Details

First Author: V.Moustou GREECE

Co Author(s):    A. Kanellopoulos   G. Asimellis           

Abstract Details



Purpose:

To evaluate the extent and incidence of Opaque Bubble Layer (OBL) in LASIK flaps created with the Alcon/WaveLight FS200 femtosecond laser as a result of a recent change in flap programming parameters aiming to further reduce the indent and the extent of OBL.

Setting:

Laservision.gr Eye Institute, Athens, Greece

Methods:

Intraoperative digital images of the flaps from 36 consecutive patients (72 eyes) subjected to bilateral femto-second-assisted LASIK were analyzed with computerized proprietary technique. The OBL incident and extent was measured and reported as % over the entire flap area. In this group A, flap creation was performed with a 1.7 mm wide canal, implemented as an updated design, aiming to reduce OBL extent. The same OBL parameters were investigated and compared in an age- and procedure-matched group B, in which the previous standard setting of 1.3 mm wide canal was implemented.

Results:

In group A, in which the updated canal width parameters were employed, the average extent of OBL was in average 3.69% of flap area (range from none to 11.34%). In group B the respective values were 6.06% (from none to 20.24%). We found the difference to be statistically significant (one-tailed p<0.001).

Conclusions:

This study suggests that there is significant reduction in OBL incidence and extent when employing novel LASIK flap ventilation canal parameters of width and spot line separation. ?

Financial Disclosure:

... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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