Eyesight is the ability of the visual organ to perceive the objects.
   For man, nothing is more precious than eyes. So, from ancient times it has been said that eyes are most important in the human body.
   The radical loss of eyesight might be caused by optic atrophy, central retinitis, fundus hemorrhage, detached retina and acute inflammatory glaucoma, and the gradual loss of eyesight by cataract and diabetic retinopathy.
   Seed of oriental senna, fruit of matrimony vine, plantain, honey, Atractylodes japonica, fruit of Schizandra chinensis and sesame are typical Koryo medicinal stuffs. And livers of animals, tomato, parsley, conch, crown daisy, cuttlefish and abalone are good food materials.