My juvenile lacerta has constantly weeping eyes. If anyone can give me a reason for this I would be very grateful; it may be attributed to shed skin clogging his tear ducts but could anyone think of other reasons, and possibly remedies? (He does not have a vitamin A deficiency)

Any help would be very much appreciated as he has had it for quite a while now and often finds it difficult to feed without assistance (I usually have to wipe his eyes using tissue paper).