The combined intervention significantly improved tear breakup time (SMD = 1.25, 95% CI 1.14 to 1.37, P < .0001), Schirmer I test scores (SMD = 1.55, 95% CI 1.08 to 2.02, P < .0001), and corneal fluorescein staining (SMD = -2.08, 95% CI -2.96 to -1.20, P < .00001).