维生素A缺乏是个可能的原因

"Dry eyes are also associated with some medical conditions such as diabetes, rheumatoid arthritis, lupus, scleroderma, Sjogren's syndrome, thyroid disorders and vitamin A deficiency."

维生素A缺乏是个可能的原因。而某些维生素吸收和代谢不良确与肝脏疾病有关系。

另外，每年去做一次眼科检查是一个很好的习惯。