Success rate depends on the health of the mother during her time being gravid and then on the care they get . It can be as low a zero or as high as 100%.
As I'm sure you've seen, baby chams housed together constantly step on one another indiscriminately.
This is why they are best raised individually but most people don't do that.
A good alternative is to divide the chams into 2 (or more) enclosures, which will minimize the number of times each gets stepped on.
It also decreases the number of chams that each is competing against to get the food.
Little grippy toes--and their very pointy toenails--go directly onto delicate eyes.
This can result in eye irritations and infections.
Sorry to say but in trying to help the one with the eye problem you may have accidentally drowned him.
The eye socket has a connection to the sinuses and the nostril is a fraction of an inch away from the eye.
Flushing the eye with plain water will not combat germs to prevent infection.
At the first sign of any eye trouble, while my Jackson's babies were housed together, I would saturate a Q-Tip with
http://m.cvs.com/mt/www.cvs.com/shop...jtt_v_menu=exp
OR have also used this one by Bausch and Lomb
This Bausch and Lomb solution is made with the same ingredients called Sensitive Eyes Plus
http://m.cvs.com/mt/www.cvs.com/search/_/N-0?pt=global&searchTerm=Sensitive+Eyes+Plus&un_form_encoding=utf-8&un_jtt_searchCVS.x=19&un_jtt_searchCVS.y=10
and very gently touch it to the eye.
The reason to use either of these is that their ingredients do not irritate the eyes, which some preservatives in other solutions do.