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Evaluation of the mechanical properties of main and secondary incisions made by femtosecond laser at different pulse energy settings

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Session Details

Session Title: Interactive Free Paper Session: FLACS

Session Date/Time: Sunday 06/09/2015 | 08:30-10:00

Paper Time: 09:34

Venue: Room 16

First Author: : B.Aslan TURKEY

Co Author(s): :    S. Salvarli                    

Abstract Details

Purpose:

To evaluate and compare the mechanical properties of main and secondary Incisions performed with femtosecond laser at different energy settings.

Setting:

Liv Ankara Hospital,/Ankara, Turkey

Methods:

Thirty cataract patients were included in the study, 10 for each energy group. Femtosecond laser main and secondary incisions were performed with three different pulse energy levels: 4µJ (low energy group), 5 µJ (intermediate energy group), and 6 µJ (high energy group). All energies were applied with the same spot separation (4 μm) and the same layer separation (4 μm) values .The ease of wound opening, bubble formation and the wound integrity at the end of the surgery was evaluated.

Results:

The low energy group caused more resistance to wound dissection both at the side-port and main incisions. With the intermediate energy values main incision could be dissected but side-port incision resisted to dissection. The high energy eased dissection of both main and side-port incisions. Closing main incision and more bubble formation in the high energy group was somehow troublesome.

Conclusions:

Titration of energy values to prepare corneal wounds with femtosecond laser is crucial. Low energy values may make wound opening difficult whereas high energy values may make wound closure difficult possibly due to the increased thermal effect of photo-disruption.

Financial Interest:

NONE

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