I'm just looking at your couple of pictures- not sure when the larger closeup picture was taken (in incubation box or in rearing container), but one thing that will cause baby chams eyes to close too much is constant moisture in the environment. Make sure things dry completely between mistings. My best success with baby chameleons (including many years ago campani) mist gently all surfaces so you have a very light covering of water droplets that will evaporate within 2 or 3 hours. Wait until all water has evaporated completely from the corners of the rearing container and within an hour or so of all water droplets dissappearing, repeat the cycle and mist again the same as before- try for total evaporation within a 2 or 3 hours. Longer than 3 hours is too long.
If eyes are shut prior to misting, I have found it helpful to actually spray the baby gently with the water to alert it to begin drinking and get its eyes open. Allow a few minutes to drink and then feed immediately with supplement dusted insects before eyes close once again.
Often adequate nutrition and water and adequate heat will get eyes open again. Usually the cause is too much moisture, too low temperature (most especially combined with too much moisture) or inadequate supplementation (especially indoors and especially if too much is fed at one time and insects quickly loose the supplement powder).
If eyes are shut in incubation container- maybe stuff in eyes from vermiculite. Looking at the vermiculite size compared to babies in your pictures, I don't think this likely. All the same, you can try fixing by making sure to spritz the baby gently directly for a couple of seconds to help it clean it's eyes.
More likely- if this happens when emerging from egg, the cause is inadequate supplementation of the mother or diet of mother, and not a lot can be done in that case, except try to prevent it in the future by correcting her conditions.
These babies are tiny- will need drosophila melanagastor, springtails and the like. Tiny food can also be found if you go to the forest and collect dead leaves and compost from the ground. Indoors warm the leaves up for a day or two and keep them slightly moist- lots of tiny insects will hatch out of eggs in the leaves.
Congratulations on your success thus far- campani are really beautiful little chameleons.