I broke my last pair of glasses today and needed a new pair urgently. Africa_Yongsan at ipark mall, on level B1, used my prescription from my broken glasses and had a new pair ready for me in less than 30 minutes. The price was so good I ended up getting 2 pairs (about $250 total for 2 RayBan brand frames). The staff spoke English well and did not try to upsell me on more expensive glasses or lenses. Would absolutely use them again for my optical needs.