商品名：Bromilep, Epilease, Libromide, Potassium bromide solution
Polyvinyl alcohol is a synthetic resin tear substitute (lacromimetic).
It is used for lubrication of dry eyes. In cases of keratoconjunctivitis sicca (KCS or dry eye) it will improve ocular surface lubrication, tear retention and patient comfort while lacrostimulation therapy (e.g. topical ciclosporin) is initiated. It is more adherent and less viscous than hypromellose. Patient compliance is poor if administered >q4h; consider using a longer acting tear replacement.
劑量數字暫停提供：VetPro 的劑量改依 DRUGAPI 藥物資料庫對外的內容，DRUGAPI 目前不提供可直接計算的劑量。下方列出 DRUGAPI 的審查結論與劑量審查引用的來源；計算機可手動輸入劑量換算。
PVA 單方、PVA／聚維酮複方與不同防腐劑產品不可互換；須完成實際產品、成分、物種、眼別、眼科診斷、route、保存與複診 gate，否則全面 fail closed。
DRUGAPI 劑量審查引用的獸醫官方標示（各標示只適用於其產品、物種與法域，不可互換）