Premium
Tear film osmolarity after femtosecond laser‐assisted sub‐bowman keratomileusis. a pilot study
Author(s) -
CANADAS SUAREZ P,
GARCÍAGONZÁLEZ M,
HERNÁNDEZVERDEJO J,
TEUS MA
Publication year - 2010
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2010.324.x
Subject(s) - osmole , keratomileusis , osmotic concentration , ophthalmology , medicine , femtosecond , surgery , laser , cornea , optics , physics
Purpose To evaluate the tear osmolarity in patients that underwent Femtosecond laser‐assisted sub‐Bowman Keratomileusis (FSBK) three months before Methods We performed a prospective observational study of consecutive eyes that had Femtosecond laser‐assisted Sub‐Bowman Keratomileusis. Three months post‐op, tear osmolarity was measured with the TearLab TM Osmolarity System. This measure was performed only in one eye per patient. A normality value of 308 ± 5 mOsm/L (provided by the manufacturer) was used to classify the tear osmolarity Results 29 eyes of 29 patients were included in the study. Mean patient age was 43.5 ± 2.12 years (range, 25 to 64). Three months postop, mean osmolarity values were 304.5 ± 0.71 mOsm/L (range, 292 to 342). 17 eyes (60%) had a normal value of tear osmolarity (within ±2 standard deviation of the mean normal value), only 3 eyes (10%) had an hypo‐osmolar tear film and 9 eyes (30%) had an hyper‐osmolar tear film 3 months after FSBK Conclusion Our results suggest that tear film osmolarity measured with the TearLabTM Osmolarity system tends to achieve normal values three months after Femtosecond laser‐assisted sub‐Bowman Keratomileusis, although one third of our patients still have a hyper‐osmolar tear film 3 months postop