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Sub Bowman’s keratomileusis using an automated microkeratome on first 240 eyes: AS-OCT flap assessment versus preop patient conditions

Poster Details

First Author: H.Mehta INDIA

Co Author(s):                  

Abstract Details


To assess safety, efficacy and flap performance of One Use-Plus SBK automated microkeratome (Moria SA, France) to perform Sub Bowman’s Keratomileusis (SBK) for intended 100/110-micron planar flaps at Speed 2/1 respectively.


Bharti Eye Foundation New Delhi, India


First 240 eyes of 120 myopic and hyperopic patients have been included for thin-flap LASIK surgery using One Use-Plus SBK microkeratome, with Speed 1 selected on Evolution 3E console unit (Moria SA, France) for 110-micron intended flap thickness. 1 single-use SBK head has been used for 1 patient (2 eyes), and choice of metallic rings was based on nomogram provided by the manufacturer. All patients had their central corneal flap thickness measured using anterior segment optical coherence tomography (RTVue, OptoVue, USA) at 3 weeks postoperatively. Flap complications have been reported.


Mean central flap thickness was 110.64 ± 8.7 microns, ranging from 90 to 130 microns. Reproducibility between first cut (OD) and second cut (OS) was less than 2 microns on average: OD 110.95 ± 8.90 and OS 110.33 ± 8.53 microns respectively. No influence of preoperative K readings has been noticed on central flap thickness, and more than 70% of flaps were within 10 microns from the intended 110 microns flap depth. Flap dimensions were always properly sized to allow consecutive excimer treatment: no laser treatment has been cancelled nor delayed, and no intraoperative flap complication has been experimented. Sizes of OUP SBK created flaps are especially excellent for hyperopic and presbyopic corrections. No complaint of DLK nor postoperative flap complication has been reported in our series.


Moria OUP SBK is a safe and accurate automated microkeratome for the creation of 100/110-micron planar flaps. It allows refractive surgeons to provide high level of safe surgeries for patients with a high flap performance and reliability. In our experience, OUP SBK flap compares favourably with femtosecond flaps. FINANCIAL DISCLOSURE?: No

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