Official ESCRS | European Society of Cataract & Refractive Surgeons
Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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The innovation of CUTM-1 in axis measurement

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Session Details

Session Title: Cataract Surgery Equipment/Instrumentation/Surgical Devices II

Session Date/Time: Monday 12/09/2016 | 17:00-18:30

Paper Time: 17:28

Venue: Hall C1

First Author: : U.Reinprayoon THAILAND

Co Author(s): :    N. Kasetsuwan   R. Sajjanukool   M. Butsayarat              

Abstract Details


To evaluate the accuracy of CHULA toric marker application version 1 (CUTM-1) in iOS system for marking corneal axis.


Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand


An application for corneal axis marking was developed to use on iOS system. This application could verify the horizontal alignment, assigned axis and other anatomical landmarks. A mobile phone had to be attached on the slit-lamp eyepiece. Thereafter, the eye was focused from limbus to limbus and was captured via CUTM-1 application. Horizontal and axis deviation of two procedures, which were CUTM-1 application and a common slit-lamp axis marking method, were analyzed by using image analysis to evaluate the accuracy and compare to standard photograph. Ten of volunteers were enrolled in the study.


Decentration of the slit-lamp method and CUTM-1 application were 0.34 ± 0.42 mm and 0.28 ± 0.18 mm, respectively. Deviation of the horizontal line by slit-lamp method and CUTM-1 application were 2.00 ± 1.90 degrees and 1.10 ± 1.00 degrees (p= .058). Deviation of the assigned axis by slit-lamp method was 2.0 ± 3.0 degrees, while there was no deviation by CUTM-1 method.


CHULA toric marker application version 1 for iOS system is accurate for marking the cornea axis. It showed no axis deviation comparing to the commonly used 3-step method. This innovative application is accurate, easy and user-friendly for modern ophthalmic surgery practice.

Financial Disclosure:


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