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Long-term of intracorneal ring segment implantation for keratoconus treatment: 10 years follow-up analysis

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First Author: A.Vega Estrada SPAIN

Co Author(s):    E. Espla   A. Martinez   J. Alió              

Abstract Details

Purpose:

To report the long term visual, refractive and keratometric outcomes, as well as the complication rate of intracorneal ring segment implantation (ICRS) for keratoconus treatment.

Setting:

Vissum Miranza, Spain.

Methods:

Retrospective, consecutive, clinical study including 37 keratoconus cases mean age 31.5 ± 9.5 years that were treated with ICRS. Visual, refractive, keratometric readings, corneal higher order aberrations and explantation rate were evaluated during a follow up period of at least 10 years.

Results:

A significant improvement was observed in the uncorrected visual acuity that came from 0.25 ± 0.24 to 0.47 ± 0.33 one year after the surgery (p<0.01) with no further changes in the remaining ten years (p>0.50). A reduction of the sphere and cylinder from preoperative -2.29 ± 3.51 and -3.53 ± 2.58 to postoperative ten years -1.21 ± 2.55 and -2.70 ± 1.74 respectively was also found. A significant reduction in the mean keratometry was observed from 49.33 ± 5.02 to 46.65 ± 3.77 at ten years (p<0.01). ICRS explantation was found in 10.8% of the cases.

Conclusions:

Intracorneal ring segment for keratoconus treatment provides stable visual, refractive and keratometric outcomes during long term of follow up. Severe complications leading to ICRS explantation might be observed in 10% of the cases.

Financial Disclosure:

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