Well, yes, too much drink can lead to glassy eyes. And you should know that when a person's eyes appear shiny or have a glassy appearance that means he/she is suffering from glassy eyes. In other words, when someone have glassy eyes, his eyes will have a feeling of listlessness, and the eyes are unfocused, and without any luster. According to some experts, people who are heavy drinkers will have glassy eyes. As we know that drinking alcohol hampers the quality of sleep you get each night, causing restlessness and insomnia. 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. Because of it, it will cause the eyes to become dry, and leading to glassy eyes. so just do not drink too much alcohol. and it can be a long term damage to your eyes.