My leopard gecko norbert will not open his eyes, i think there stuck shut.. cood this be a shedding problem? He'll sometimes lick his left eye and it will open.. but his right is always closed.. He doesnt sense anything in front of him.. hes not eating because he cant see his food.. I made sure his hide is moist.. ive been giving him vitamins, and even misting him to loosen his eyes.. Is there anything i can do fix his eyes? thank you