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Materials/Methods:
In this prospective, randomised clinical trial, 35 subjects were allocated by random number to receive either RL or SYS to both eyes at a standardised dosing schedule for 2 months. The Ocular Surface Disease Index (OSDI) questionnaire was used to assess their dry eye symptoms before and 3 months after treatment. Main outcome measures were the OSDI total score (TS) as well as the ocular symptoms (OS), vision-related function (VRF) and environmental triggers (ET) subscale scores.
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