not sure about the goo that might be stress,, but the eye definately sounds like cataract,, this can talk with experience as i have suffered with this my self and had to have my lens removed and replaced with a silicone inplant,,, any way sorry for going off on one ,, as m,a,c said if hes stressed he will not eat for about a week, just make sure you change hes warter twice a day,, as hes not eating hes immune system will be low,so keep hes pen as clean as you can ,, hope it all works out for you, keep us posted