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.
Less than 3 years after installation water heater starting leaking from manufacturer's hole in bottom of heater (photos were provided to Rheem Warranty Division). On July 4th room was flooded and I was able to get a plumber to come that holiday, remove water heater and replace with a new one.