Clinical Study
Eye (2007) 21, 177–182. doi:10.1038/sj.eye.6702153; published online 19 May 2006
Microincision bimanual phacoemulsification and Thinoptx® implantation through a 1.70 mm incision
Presented as poster at XXII ESCRS Congress in Paris in September 2004
Financial interest: Nil
P Prakash1, H E Kasaby1, R K Aggarwal1 and S Humfrey1
1Department of Ophthalmology, Southend Hospital NHS Trust, Prittlewell Chase, Westcliff on Sea, Essex, UK
Correspondence: P Prakash, 2, Holmesdale Close, Westcliff on Sea, Essex SS0 0QW, UK. Tel: +44 1702 352 038; Fax: +44 1702 221 279. E-mail: pripraka@hotmail.co.uk
Received 24 May 2005; Accepted 17 September 2005; Published online 19 May 2006.
Abstract
Purpose
To prospectively assess the efficacy of bimanual phacoemulsification and implantation of Thinoptx®, an injectable intraocular lens (IOL), inserted through 1.70 mm clear corneal incision.
Setting
Department of Ophthalmology, Southend Hospital NHS Trust, UK.
Methods
A total of 50 eyes of 49 randomly selected patients with cataracts had microincision clear corneal bimanual phacoemulsification (MICS) with implantation of Thinoptx® IOL in the capsular bag. All patients underwent full preoperative assessment. Postoperative assessment was carried out at 3 and 6 weeks and at 15 months.
Results
In all 50 cases the IOL was inserted through 1.70 mm clear corneal incision. The mean best-corrected visual acuity was 0.02 (6/6-1) at 6 weeks and was 0.17 (6/10) at the final follow-up. The mean final surgically induced astigmatism at 6 weeks was 0.0106. Coloured haloes around artificial lights were perceived by 69.23% of patients at 6 weeks and by 61.29% at the final follow-up. One patient underwent IOL exchange for this. Posterior capsular opacification was noticed in 31.26% at 6 weeks and in 64.51% at 15 months. Anterior capsular opacification was noticed in 5.26% at 6 weeks and in 16.12% at 15 months. In one patient the IOL had to be exchanged because of tilt and displacement of the IOL due to anterior capsular phimosis.
Conclusions
We conclude Thinoptx® can be safely inserted through 1.70 mm incision used for bimanual phacoemulsification. Distance and near visual acuity achieved with this IOL is satisfactory. There is no significant change in keratometric astigmatism following this procedure. However, posterior capsular opacification rate was significantly higher with this IOL. Haloes around light sources were significant.
Keywords:
microincision cataract surgery (MICS), Thinoptx, Bimanual phacoemulsification
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