Implantable Collamer Lens after Intrastromal Rings for Keratoconus

Abstract

 

Purpose:

 

To describe the outcome of phakic collamer lens implantationafter intrastromal rings in 7 eyes of 6 patients with keratoconus.

 

Methods:

 

Patients with keratoconus and at least one year after intrastromalrings underwent phakic collamer intraocular lens implantation.Seven eyes of 6 patients, mean age 40.42 years (range 23-49).Six cases received Intacs and one case Corneal Rings. Four casesreceived toric implantable collamer lenses and 3 cases sphericimplantable collamer lenses.

 

Results:

 

UCVA range previous phakic lens was 20/200 to 20/1200 improvingpostoperative to a range of 20/25 to 20/50. Mean spherical equivalentprevious collamer lens was -11.03 and postoperative was -0.46.Paired t test for statistical analysis were performed. Statisticallysignificant differences were observed between preoperative andpostoperative UCVA (P=0.0001) and preoperative versus postoperativerefraction (P=0.0003). All patients had a noticeable subjectiveimprovement.

 

Conclusions:

 

Combination of intrastromal rings and phakic intraocular lenscan be an effective alternative in the management of patientswith keratoconus.  

 

 

Keywords: keratoconus • refractive surgery: phakic IOL • refractive surgery: other technologies