I was curious as to what a normal chameleon eye looks like, as in the basic functions and structure, and there was an older post from a veterinarian who had done an autopsy on a male panther chameleon with MBD, and it was incredibly fascinating to read. One of the components was the chameleon's eye, which was extracted and the lid was taken off. On a ruler, I am pretty sure it measured a little less than half an inch, if I remember correctly. Anyway, it just goes to show you how incredibly complex yet primitive chameleons are and how reliant they are on their eyes. I am going to say that most of the pictures were not for the faint of heart, but the picture with the eye was particularly interesting to me. Unfortunately, the chameleon had to be euthanized due to medical problems (MBD, organ failure, etc.) but at least his body could be donated for furthering the biological knowledge of chameleons as a whole.
Here is the link in case some of you would like to explore this topic:
Male Panther Necropsy
Again, I warn those who do not like to see the inside of chameleons, and would prefer to just continue enjoying their colorful outsides
The post is a bit long, but I found it worth the read.