Tear film parameters before and after intracorneal ring segment implantation in keratoconic eyes.

PURPOSE: To assess signs of dry eye syndrome in keratoconic eyes following intracorneal ring segment (ICRS) implantation.

PATIENT AND

METHODS

Twenty eyes of 20 consecutive patients with keratoconus were assessed for tear film changes following ICRS implantation at 6 months postoperatively. Evaluated parameters included tear osmolarity, non-invasive tear breakup time test (NI-BUT test) and Schirmer test I and II before and after treatment.

RESULTS

No significant changes were found with respect to osmolarity, Schirmer I and II (p = 0.9, p < 0.64, and p < 0.91, respectively). The NITUBT was significantly lower after surgery (p = 0.04).

CONCLUSION

Our results suggest that implantation of ICRS does not result in a significant change in tear film osmolarity, or tear film volume nor improves the tear film stability.