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Clinical outcomes of eyes with aqueous shunt implants after phacoemulsification

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Session Details

Session Title: Glaucoma II

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

Paper Time: 10:12

Venue: Room 17

First Author: : R.Puertas UK

Co Author(s): :    K. Barton   D. Plemel   R. Puertas   M. Zahari           

Abstract Details


To assess the effect of cataract surgery on IOP and glaucoma medication usage in eyes previously implanted with aqueous tube shunt devices.


Consecutive interventional case series of eyes that underwent aqueous shunt implantation followed by phacoemulsification under the care of one surgeon in a tertiary referral center between 1998 and 2010. Glaucoma Service,Moorfields Eye Hospital, London ,United Kindgom


Eligible patients were identified from a prospectively acquired electronic database of aqueous shunt implants. Records of eligible patients were reviewed and the following collected: visual acuity, IOP, glaucoma medication usage and further glaucoma surgical procedures. Data were collected before phacoemulsification and postoperatively at 1 day; 1 week; 1, 3, 6, 12, 24 months; and at last follow-up. Comparisons were made using a two-tailed Student t test where a P value of 0.05 was used to determine statistical significance.


Forty-seven (47) eyes met the study criteria. Visual acuity significantly improved at all times following phacoemulsification, from 1.13 logMAR ± 0.79 (mean ± SD) pre-phacoemulsification to 0.71 logMAR ± 0.80 (mean ± SD) at last follow-up. Intra-ocular pressure at last follow-up was 13.89mmHg ± 4.24 (mean ± SD) compared to 14.77mmHg ± 5.24 (mean ± SD) pre-phacoemulsification. It was significantly lower at the one-week time-point, but not otherwise (P=0.01) The mean number of glaucoma medications has not increased: 1 (0.85) ± 1.02 (mean ± SD) pre-phacoemulsification and 1 (1.04) ± 1.18 (mean ± SD) at last follow-up (P = 0.38).


Phacoemulsification in eyes previously implanted with aqueous shunts for glaucoma improves visual acuity without significantly altering the IOP or the number of medication used.

Financial Interest:

One of the authors research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, One of the authors research is funded, fully or partially, by a competing company

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