As the title says, my Leopard Gecko's eyes are not dilating at night, therefore, he cannot see too well at night/in the dark. Any suggestions that I could do to resolve this problem would be helpful. Also I feed him superworms gutloaded with carrots and sometimes oranges and I also leave a dish of vitamins with D3 in the terrarium. Please tell me if I am doing anything wrong and what I can do to correct this problem. Thank you and God Bless - Moefv