Evaluation of a 3-piece silicone intraocular lens with poly(methyl methacrylate) haptics.
OBJECTIVE
To evaluate the safety and performance of a foldable silicone intraocular lens (IOL) in small incision phacoemulsification surgery.


METHODS
Vaasa Central Hospital, Vaasa, Finland.


METHODS
Phacoemulsification with primary implantation of a posterior chamber IOL was performed in 50 patients. All eyes were implanted with a CeeOn IOL (model 920, Pharmacia & Upjohn) with a silicone optic and poly(methyl methacrylate) haptics. The ease of folding, implanting, and unfolding the IOL in the bag were recorded. Visual acuity, postoperative complications, optic decentration, and optic tilt were measured at 5 postoperative visits. The IOLs were evaluated for haze and discoloration and the IOL surface, for inflammatory or pigment deposits. Follow-up was 12 months.


RESULTS
In 44 of 50 cases, folding the IOL was easy, and in 46 of 50, unfolding the IOL was controlled. The mean follow-up was 11.45 months +/- 0.52 (SD). No postoperative complications occurred, and 96% of patients achieved a best corrected visual acuity (BCVA) of 0.5 or better and 56%, a BCVA of 1.0 or better. The IOL decentration was less than 0.25 mm in 89% of cases, and there was no optic tilt. The neodymium:YAG laser capsulotomy rate was 11%.


CONCLUSIONS
Good visual outcome and excellent centration were achieved with the CeeOn model 920 IOL. It is therefore suitable for small incision cataract surgery. Because of the IOL's smooth, polished surface, the choice of instruments for folding and implantation is important.
Linnola
R J
RJ
Vaasa Central Hospital, Department of Ophthalmology, Finland.
Holst
A
A
D000368:Aged; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D005548:Foreign-Body Migration; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D018918:Phacoemulsification; D019904:Polymethyl Methacrylate; D011183:Postoperative Complications; D011474:Prosthesis Design; D012449:Safety; D012826:Silicone Elastomers; D014792:Visual Acuity
D012826:Silicone Elastomers; D019904:Polymethyl Methacrylate