C.moderate nonproliferative retinopathy D.severe nonproliferative retinopathy 16.Early signs of diabetic retinopathy include all of the following except A.leaking blood vessels and any vision changes. B.retinal swelling or macularedema. C.pale,fatty deposits on the retina--signs of leaking blood vessels. D.inability to keep eyes open. 17.To prevent progression of diabetic retinopathy,people with diabetes should control their levels of A.blood sugar B.blood pressure C.blood cholesterol. D.all of the above 18.People with which type of retinopathy can reduce their risk of blindness with treatment and follow-up care?( A.moderate nonproliferative retinopathy B.proliferative retinopathy C.severe nonproliferative retinopathy D.mild nonproliferative retinopathy 19.For the classification of ocular muscles,which pair below is NOT agonist-antagonist pair? A.Superior oblique vs.inferior oblique B.Superior rectus vs.inferior oblique C.Medial rectus vs.lateral rectus D.Superior rectus vs.inferior rectus 20.The most common type of senile cataract is A.cortical cataract B.nuclear cataract C.posterior capsular cataract D.none 21.Diabetes causes4 C. moderate nonproliferative retinopathy D. severe nonproliferative retinopathy 16. Early signs of diabetic retinopathy include all of the following except ( ) A. leaking blood vessels and any vision changes. B. retinal swelling or macular edema. C. pale, fatty deposits on the retina -- signs of leaking blood vessels. D. inability to keep eyes open. 17. To prevent progression of diabetic retinopathy, people with diabetes should control their levels of ( ) A. blood sugar. B. blood pressure. C. blood cholesterol. D. all of the above 18. People with which type of retinopathy can reduce their risk of blindness with treatment and follow-up care? ( ) A. moderate nonproliferative retinopathy B. proliferative retinopathy C. severe nonproliferative retinopathy D. mild nonproliferative retinopathy 19. For the classification of ocular muscles, which pair below is NOT agonist-antagonist pair? ( ) A. Superior oblique vs. inferior oblique B. Superior rectus vs. inferior oblique C. Medial rectus vs. lateral rectus D. Superior rectus vs. inferior rectus 20. The most common type of senile cataract is A. cortical cataract B. nuclear cataract C. posterior capsular cataract D. none 21. Diabetes causes