ㅈㄷㅍ At the hospital Has a back slit. About a year has passed The effect is quite good and satisfactory. At some point, the slit became wide open,,,, It gets redder especially when I can't sleep. Sometimes people recognize my eyes as red,, I have to go again, but I can't because I don't have time. It's perfect as long as it's not gaping, but it's a bit disappointing