METHODS: A prospective self-control study. Totally 42 patients(81 eyes)with high myopia treated by FS-LASIK combined with rapid corneal collagen cross-linking in our hospital from June to September 2017 were followed up for 6mo. The uncorrected visual acuity(UCVA), spherical equivalent(SE), corneal morphological parameters, corrected intraocular pressure and complications were observed.

RESULTS: At 6mo after operation, the UCVA(LogMAR)increased from 1.44±0.18 before operation to -0.03±0.04, the SE degree reduced from -8.01±1.23D to -0.06±0.54D, the steepest corneal curvature(Steep K)decreased from 44.23±0.80D to 37.39±1.17D at 6mo after operation, the flattest corneal curvature(Fleep K)decreased from 42.87±0.61D before operation to 36.84±0.99D after operation. And the thinnest point thickness of cornea decreased from 525.33±30.42μm to 402.12±28.04μm, the corrected intraocular pressure decreased from 17.77±2.16mmHg to 16.69±0.41mmHg. There were no significant changes in the posterior surface height of thinnest cornea and the endothelial cell density. No corneal infections, serious non-infectious inflammation and complications related to corneal flaps were found during follow-up.

CONCLUSION: FS-LASIK combined with rapid corneal collagen cross-linking is safe and effective in treatment of high myopia. The corneal morphology and refraction are relatively stable after surgery.