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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Experience with a novel polyurethane, hinged pupil expansion device for the management of small pupils during cataract surgery

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Session Details

Session Title: Cataract Surgery Instrumentation/Surgical Devices

Session Date/Time: Sunday 11/09/2016 | 10:30-12:00

Paper Time: 11:00

Venue: Hall C1

First Author: : H.Uy PHILIPPINES

Co Author(s): :    K. Kenyon   R. Pineda                 

Abstract Details


To report the efficacy and safety of a new pupil expansion device for enlarging small pupils during phacoemulsification cataract surgery.


Ambulatory surgical center (Peregrine Eye and Laser Institute, Makati, Philippines)


Interventional case series. Five eyes of 5 patients with small (< 4.0 mm), maximally dilated, pupils underwent phacoemulsification cataract surgery and posterior chamber intraocular lens implantation. The pupil was expanded using a novel, single-use, hinged, polyurethane device (I-ring, Beaver Visitec International, Waltham, MA) designed to provide 6.3 mm pupil diameter. The following data were obtained: pre- and postoperative undilated pupil diameter (PD), pre- and postoperative dilated PD, rate of successful pupil expansion and adverse events (eg. Pupil irregularity, sphincter tears, bleeding).


The I-ring was successfully deployed in all eyes causing consistent pupil expansion to 6.0 mm. The mean pre- and postoperative undilated PD were 1.2 mm and 1.8 mm, respectively. The mean pre- and postoperative PD were 3.8 mm and 4.2 mm, respectively. All eyes underwent successful and uneventful cataract surgery. All pupils had minor amounts of postoperative pupil irregularity (< 180 degrees). No other adverse events were reported.


The I-ring effectively and safely expands the pupil diameter in order to aid surgeons in performing cataract surgery in eyes with small pupils. Use of the I-ring causes a permanent but asymptomatic increase in undilated and dilated PD. The I-ring is a useful device for small pupil management.

Financial Disclosure:


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