Optometric Personnel Act Article 57

When issuing certificates or licenses pursuant to this Act, the central, municipal or county (city) competent authority may charge a certificate fee or license fee; the fees shall be laid down by the central competent authority.
中文原文 驗光人員法第57條
中央或直轄市、縣(市)主管機關依本法核發證書或執照時,得收取證書費或執照費;其收費標準,由中央主管機關定之。

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