A.metabolic cataract B.complicated cataract C.senile cataract D.congenital cataract 22.The lens nutrition mainly from A.aqueous and choroid B.aqueous and vitreous body C.aqueous and iris D. retina and aqueous 23.All of the following are well established early signs of glaucomatous damage EXCEP下 A)Vertical elongation of the cup B)Peripapillary atrohy C)Splinterhemorrhage on disc D)Nerve fiber layer loss 24.What are the signs of cataract? A.Blurring of vision B.Double vision in one eye C.Halos around light D.All of the above 25.When should one undergo cataract surgery? A.Wait for it to mature B.When there is difficulty in vision C.All of the above D.None of the above 26.What causes cataract? A.Excessive reading B.Keeping eyes closed C.Ultraviolet lightexposure D.None of the above 27.Which of these eye diseases used to be untreatable? A.Glaucoma B.Cataracts C.Most cases of macular degeneration D.Diabetic retinopathy 28.When eyelid bruising and swelling was obvious,how long should be in the A)24 hours B)72 hou C)12 hours D)48 hours E)36 hours 29.How many endothelial cells in normal comeal of 30-year-old man? 5 A. metabolic cataract B. complicated cataract C. senile cataract D. congenital cataract 22.The lens nutrition mainly from A. aqueous and choroid B. aqueous and vitreous body C. aqueous and iris D. retina and aqueous 23. All of the following are well established early signs of glaucomatous damage EXCEPT: A) Vertical elongation of the cup B) Peripapillary atrohy C) Splinter hemorrhage on disc D) Nerve fiber layer loss 24. What are the signs of cataract? A. Blurring of vision B. Double vision in one eye C. Halos around light D. All of the above 25. When should one undergo cataract surgery? A. Wait for it to mature B. When there is difficulty in vision C. All of the above D. None of the above 26. What causes cataract? A. Excessive reading B. Keeping eyes closed C. Ultraviolet light exposure D. None of the above 27. Which of these eye diseases used to be untreatable? A. Glaucoma B. Cataracts C. Most cases of macular degeneration D. Diabetic retinopathy 28. When eyelid bruising and swelling was obvious, how long should be in the cold compress after the injury? A）24 hours B）72 hours C）12 hours D）48 hours E）36 hours 29. How many endothelial cells in normal corneal of 30-year- old man?