Probably only 3 or 5 days after he was abandoned because he was so little and fragile. My wife and I heard the meow sound on the way home. We waited for several minutes and finally found him at the corner of a pile of trash, dirty, eyes closed with slimmy thing, almost dying.
Thank you, he is fine. Actually the iris was changing at that time, it was grey-blue color. But now his eyes are as bright as stars!