Oh no - not potters.
As for treatment- Not in display but rather in QT tank and dosage is 1 tablespoon per 5 gals. That's way too much you used. Goal is to draw out fluid under socket of eye. keep in mind the causes which are Bacterial infections, injury and water quality are the most common problems as is Vitamin A deficiency. Pop eye can also be caused by gas bubble disease as a result of oxygen super saturation excess levels of the water with the gas, nitrogen. Super saturation occurs whenever the pressure of a gas in the water is higher than the pressure of the same gas in the surrounding atmosphere, whereby the difference in gas pressures causes the gas to get pulled too quickly out of the fish's bloodstream, leaving behind gas bubbles.
The eye sockets are the weakest part of the fishs' body. I have had great luck with maracyn 1 and maracyn 2 and also melafix. It is difficult to specify a specific treatment unless the main cause is definitely known. Large daily water changes should help, if not as mentioned epsom has good results to draw the fluid out. One tablespoon per 5 gallons of water for at least three days, longer if necessary. Epsom salts isn't really salt (sodium chloride) it is Magnesium Sulfate. If water quality is the problem, a 50 percent water change must be made as soon as possible.
If a new coral was added to the aquarium recently, it should be double checked that it is not poisoning the water or letting off chemicals.