hi there my chameleons name is Gonzo hes about nine months old and he is a veiled male i am just concerned with his left eye.. he regularly has it closed id say about 60% of the time. only in the past 3 to 4 days have i noticed this, it looks to be very very slightly sunken in almost not even noticeable or like he is nursing it or something. i have noticed him digging in the corner of his terrarium often and i think he may have gotten something in his eye? also a couple other questions one is about humidity levels i try and keep it between 50 and 60 percent is that right for a veiled? and should i be worried about ventilation and stale air, being that it is an exo-terra glass rainforest terarrium with swinging front doors with vents and a screen top? one more question.. last time i cleaned the terrarrium i planted pet grass in the tropical substrate i have in the tank he is now eating it regularly is that good for him or should i take it out? i know its a long list of questions but i just want to make my chameleons life as comfortable as possible.