Other causes of ectropion are scarring, burns, trauma (called cicatricial ectropion), spasm of the orbicularis muscle, which may affect either the upper or lower eyelid, or paralysis of the orbicularis muscle in which only the lower eyelid is affected.
It is possible that there is nothing wrong with your water heater. There is a pressure relief valve on top that may be releasing water because your primary water pressure reduction valve for the house is worn out. The fact that the leak is intermittent suggests this.
Tank-style electric water heaters use two heating elements to warm the water, one at the bottom and one nearer the top. Power surges, mineral build-up and age can cause either element to fail or burn out. If your water heater produces only lukewarm water, suspect a bad top element. If it produces hot water in short supply, the probable cause is a bad bottom element. Test both to be certain. Follow these steps to check the heating elements in a hot water heater.