Well, for glassy eyes, when a person's eyes appear shiny or have a glassy appearance, we can say that his eyes are suffering from glassy eyes. And simply speaking, if someone's eyes have a feeling of listlessness, and the eyes are unfocused, and without any luster, it is possible to have glassy eyes. Of course, you can check it by your eye doctor. By the way, you should know that Excessive alcohol consumption may also result in chronic dry, bloodshot eyes as too much drinking leads to dehydration. Glassy eyes are a common result of chronic alcohol abuse. So just do not drink too much alcohol.