Lens has fuzzy spot inside

Camera was immersed in water. Everything now works; however, the lens dried with a fuzzy spot or ring on the inside. Can this be cleaned? If so, what is the likely cost?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0