Well, yes, fever can cause glassy eyes. Generally speaking, when your eyes appear shiny or have a glassy appearance, we can say that you may be suffering from glassy eyes. And at that moment, you will have a feeling of listlessness, and the eyes are unfocused, and without any luster. According to some experts, fever can lead to glassy eyes, for when you have high fever, it can just affect your eyes, leading to some eye problems, such as glassy eyes. you can put some cool cucumber on your eyes, and it will relieve your situation. By the way, you should know that 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.