Long-term safety, visual, and refractive outcomes after femtosecond laser intrastromal lenticule implantation for treatment of hyperopia

Session Details

Session Title: Presented Poster Session: Refractive Surgery New Techniques/Instrumentation/Devices II

Venue: Poster Village: Pod 2

First Author: : S.Ganesh INDIA

Co Author(s): :    S. Brar                       

Abstract Details

Purpose:

To evaluate the long term visual and refractive outcomes, changes in keratometry, pachymetry , higher order aberrations and asphericity following tissue addition technique in moderate to high hyperopia

Setting:

Nethradhama Superspeciality Eye Hospital,Bangalore

Methods:

This retrospective study included 30 eyes of 17 patients (mean age 27 years) with unilateral or bilateral hyperopia. Femtosecond laser was used to create a pocket in patient’s cornea, into which a cryopreserved/fresh lenticule, obtained from myopic patients undergoing ReLEx SMILE and matched for refractive error, was implanted. Mean follow up was 2 years (range 8 - 24 months).

Results:

2 year post, significant clinical improvement was noted in corrected distance visual acuity (0.19 ± 0.22 logMAR v/s 0.15 ± 0.11logMAR) and manifest SE (4.73 ± 1.65D v/s +0.65 ± 0.59)(p<0.05).Mean keratometry increased from 44.3±2.51 to 46.7±2.1 D and Asphericity(Q-Value) changed from -0.37 ± 0.33 to -0.96 ± 0.19 (p<0.05).Higher order aberrations increased from 0.20 µ to 0.32µ. One patient developed bilateral interface haze, for which the lenticules were explanted, followed by reimplantation of fresh lenticules.Both eyes of another patient with high hyperopia of + 9.0DS had a residue of +2.5DS, for which enhancement was performed using a Barren’s trephine.

Conclusions:

At 2 years, tissue addition technique was found to be safe and effective to treat moderate to high hyperopia. Potential advantages are less chances of regression, less induced aberrations, no flap complications, reversible and any residual refractive error can be managed effectively.

Financial Disclosure:

None