Optometric Personnel Act Article 13

When carrying out their duties, optometric personnel shall keep records of their work, sign and affix seals on them, and add the date. Also, an optometric examination report with signature and seal shall be provided when requested by the client.
中文原文 驗光人員法第13條
驗光人員執行業務,應製作紀錄,簽名或蓋章及加註執行年、月、日,並應依當事人要求,提供驗光結果報告及簽名或蓋章。

English translation for reference only; the Chinese text prevails. Not legal advice.