LASIK flaps created by fully disposable One Use-Plus SBK microkeratome: assessment of anterior segment OCT flap profile and thickness using two different methods

Poster Details

First Author: T.Vandorselaer BELGIUM

Co Author(s):                  

Abstract Details

Purpose:

To analyse profile and thickness of corneal LASIK flaps created by One Use-Plus SBK microkeratome (Moria SA, France) using the calibrated 90-micron disposable head for Sub Bowman’s Keratomileusis (OUP SBK).

Setting:

University Hospital Saint-Pierre, Brussels, Belgium

Methods:

34 consecutive eyes of 18 ametropic patients had their LASIK flaps created by OUP SBK using 1 set of disposable head and suction ring (sizing -1) for every patient (2 eyes). Central flap thickness has been assessed intraoperatively by handy ultrasound pachymetry (US)(substractive method)(SP-100, Tomey, Nagoya, Japan), and at Day 1 postoperative using anterior segment OCT (Spectral OCT SLO, Opko Healthcare Inc, USA). Flap thickness and profile were also estimated using OCT-assisted caliper tools at Day 1 postoperative both nasally and temporally.

Results:

When using OUP SBK microkeratome, central flap thickness was OD 103.7 +/- 13.1 microns and OS 90.7 +/- 12.8 microns ranging from 70 to 130 microns intraoperatively (US), then OD/OS 105.3/90.7 +/- 13.7/12.8 microns at Day 1 postop (OCT) respectively . More than 60%/70% of central flap thicknesses were comprised between [90-110] microns intraoperatively (US) and at Day 1 postop (OCT). Difference of flap thickness in the periphery was less than 2 microns thicker than centrally with OUP SBK on average, suggesting a very uniform shape in the horizontal meridian. Residual bed was always of a perfect smoothness once corneal flap lifted. No intraoperative nor postoperative flap complication was reported.

Conclusions:

Choice of calibrated 90-micron disposable head in combination with fully disposable suction ring for OUP is safe and consistently creates 90 to 110 micron planar flap. FINANCIAL DISCLOSURE?: No