Assessment of dry eye signs and symptoms and ocular tolerance of a preservative-free lacrimal substitute (Hylabak®) versus a preserved lacrimal substitute (Systane®) used for 3 months in patients after LASIK.

Clin Ophthalmol · 2013 · PMC3862698 · PMID 24353401

Europe PMC DOI

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closest p

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did not reach statistical significanceno p-value reported

However, the differences were small and did not reach statistical significance.

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