I recommend Ilsan Juyeop Haeoreum Eye Clinic.

My eyesight has gotten worse than before, so I went for a 6-gallon checkup. I was introduced to Juyeop Haeoreum Eye Clinic by a friend, hoping to find out if it had gotten any worse and also to look into Dream Lenses. First, I had a thorough eye exam and received a consultation. Afterward, I had a consultation with the therapist. The therapist was a man and a bit older. He told me to keep an eye on my 0.8 vision and to come back for another checkup in 6 months. I was anxious, but after the exam, I felt much better.