Optometric Personnel Act Article 20
Business records of an optometric lab, as well as the notes or prescriptions issued by physicians shall be kept properly for at least three years.
中文原文 驗光人員法第20條
驗光所執行業務之紀錄及醫師開具之照會單或醫囑單，應妥為保管，並至少保存三年。