Clinical trial NCT01125345: Posterior Capsule Opacification (PCO) With Single Piece Hydrophobic Versus Hydrophillic Intraocular Lens (IOL)
Official title: A Prospective Controlled Clinical Trial to Evaluate the Posterior Capsule Opacification in Contralateral Eyes Implanted With Single Piece Hydrophobic AcrySof IOL and Single Piece Hydrophilic Acrylic IOLs
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Posterior Capsule Opacification
Keywords: hydrophobic acrylic
PCO
posterior capsule opacification
hydrophilic acrylic IO
Lead sponsor: Iladevi Cataract and IOL Research Center
Sponsor class: OTHER
First posted: 2010-05-18
Enrollment: 60
Sex: ALL
Minimum age (years): 50
Maximum age (years): 80
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The purpose of the study was to compare the postoperative PCO results of the single-piece hydrophobic Acrylic IOLs versus the newer generation single-piece hydrophilic Acrylic IOLs in patients undergoing bilateral cataract surgery.

Detailed description: Amongst several surgical techniques and IOL technology that influence the opacification of the posterior capsule, the role of IOL material and optic design remain crucial in determining its development. The single-piece Acrylic IOLs with a hydrophobic surface have been widely used in practice. The single-piece Acrylic IOLs with a hydrophilic surface became commercially available more recently. Although there is a study that compared the single piece hydrophobic and the single piece hydrophilic IOL, it was conducted on the older generation of the hydrophilic IOL. Moreover, experimental and clinical study has been performed to evaluate the posterior capsule opacification between the Hydrophilic acrylic IOL with a sharp optic edge design excluding the optic-haptic junction, versus the newer generation hydrophilic IOL design which has an improved 360-degree sharp edge, with results favouring the latter design. There is little data that compares the single-piece Acrylic IOLs with a hydrophobic surface to the newer generation single-piece Acrylic IOLs with a hydrophilic surface. Because the IOL characteristics play a crucial role to prevent posterior capsule opacification (PCO), it is of clinical importance, as well as investigational interest to assess the PCO following implantation of these IOLs. We conducted a prospective, randomised, intra-individual study to compare the 3 year postoperative PCO results of the single-piece hydrophobic Acrylic IOLs versus the newer generation single-piece hydrophilic Acrylic IOLs in patients undergoing bilateral cataract surgery.

Eligibility criteria: Inclusion Criteria:

* bilateral senile surgery
* age ranged from 53 to 78 years
* pupil mydriasis \> 7 mm
* No history of previous ocular surgery
* gave consent for followup examination

Exclusion Criteria:

* coexisting ocular morbidities
* diabetes mellitus

Primary outcomes:
measure: posterior capsule evaluation
timeFrame: 3 years
Secondary outcomes:
measure: ND-Yag capsulotomy rate
timeFrame: 3 years
Other outcomes:
Locations:
city: Ahmedabad
country: India
facility: Raghudeep Eye Clinic
state: Gujarat
Study officials:
affiliation: Iladevi Cataract and IOL Research Center
name: Abhay Vasavada, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Johansson B. Clinical consequences of acrylic intraocular lens material and design: Nd:YAG-laser capsulotomy rates in 3 x 300 eyes 5 years after phacoemulsification. Br J Ophthalmol. 2010 Apr;94(4):450-5. doi: 10.1136/bjo.2009.166181. Epub 2009 Oct 14.
citation: Lombardo M, Carbone G, Lombardo G, De Santo MP, Barberi R. Analysis of intraocular lens surface adhesiveness by atomic force microscopy. J Cataract Refract Surg. 2009 Jul;35(7):1266-72. doi: 10.1016/j.jcrs.2009.02.029.
citation: Kugelberg M, Wejde G, Jayaram H, Zetterstrom C. Two-year follow-up of posterior capsule opacification after implantation of a hydrophilic or hydrophobic acrylic intraocular lens. Acta Ophthalmol. 2008 Aug;86(5):533-6. doi: 10.1111/j.1600-0420.2007.01094.x. Epub 2007 Dec 11.
citation: Kugelberg M, Wejde G, Jayaram H, Zetterstrom C. Posterior capsule opacification after implantation of a hydrophilic or a hydrophobic acrylic intraocular lens: one-year follow-up. J Cataract Refract Surg. 2006 Oct;32(10):1627-31. doi: 10.1016/j.jcrs.2006.05.011.
citation: Heatley CJ, Spalton DJ, Kumar A, Jose R, Boyce J, Bender LE. Comparison of posterior capsule opacification rates between hydrophilic and hydrophobic single-piece acrylic intraocular lenses. J Cataract Refract Surg. 2005 Apr;31(4):718-24. doi: 10.1016/j.jcrs.2004.08.060.
citation: Werner L, Mamalis N, Pandey SK, Izak AM, Nilson CD, Davis BL, Weight C, Apple DJ. Posterior capsule opacification in rabbit eyes implanted with hydrophilic acrylic intraocular lenses with enhanced square edge. J Cataract Refract Surg. 2004 Nov;30(11):2403-9. doi: 10.1016/j.jcrs.2004.02.085.
citation: Nishi Y, Rabsilber TM, Limberger IJ, Reuland AJ, Auffarth GU. Influence of 360-degree enhanced optic edge design of a hydrophilic acrylic intraocular lens on posterior capsule opacification. J Cataract Refract Surg. 2007 Feb;33(2):227-31. doi: 10.1016/j.jcrs.2006.10.020.