When were they added and how? What are your water parameters?
The cloudy eye could be damage caused by nets, or bad water quality, either in your tank, or in the store's water. The white spot, on its own, could be anything or nothing and the scratching could be a reaction to the new water, chlorine, ammonia, pH changes or disease. I would not start a regime of different treatments, but instead check your water is ok, the tank is clean and perhaps add a broad medication like Quick Cure in half doses in case of disease.
The cloudy eye on its own is nothing to panic over, and panic could kill the little guys, so take it slow, get the water right and do go ripping their home apart yet!
Ken