Syarifah, N.Y., Muryani and Mira Runy Cendrawasih 2021. The Effect Of Giving Lettuce Juice To Patients On Pre-Operating Patients ’Anxiety In Jogja Lasik Center Rs Mata "Dr. Yap" Yogyakarta. Journal of Health (JoH). 8, 2 (Jul. 2021), 121-127. DOI:https://doi.org/10.30590/joh.v8n2.p121-127.2021.