Atypical central retinal artery occlusion as the first presentation of POEMS syndrome: a case report oleh Panitha Jindahra, Charungthai Dejthevaporn, Pimjai Niparuck, Jariya Waisayarat, Piyaphon Cheecharoen, Thanatporn Threetong, Purit Petpiroon, Tharikarn Sujirakul, Anuchit Poonyathalang, Kavin Vanikieti