15.Which of these precautions might help prevent macular degeneration? () A.Regulardoses of aspirin B.Eating spinach and com C.Using a reading lamp D.All of the above 16.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 17.Prostaglandin analogues lower IOP predominantly by which one of the following mechanisms?( A Increased uveoscleral outflow B Enhanced aqueous outflow by stimulation of ciliary muscle contraction C Reduced vitreous volume D Reduced aqueous production 18.What is the most common cause of reduced vision after cataract surgery? () A.After cataract B.Refractive error C.Inflammation D.All of the above 19.Which of the following is not included in the refractive system of the eye? A.corneal B.aqueous C.lens D.retina 20.Onthestage of senile cataract,which is wrong 44 15. Which of these precautions might help prevent macular degeneration? ( ) A. Regular doses of aspirin B. Eating spinach and corn C. Using a reading lamp D. All of the above 16. 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 17. Prostaglandin analogues lower IOP predominantly by which one of the following mechanisms? ( ) A Increased uveoscleral outflow B Enhanced aqueous outflow by stimulation of ciliary muscle contraction C Reduced vitreous volume D Reduced aqueous production 18. What is the most common cause of reduced vision after cataract surgery? ( ) A. After cataract B. Refractive error C. Inflammation D. All of the above 19．Which of the following is not included in the refractive system of the eye? A. corneal B. aqueous C. lens D. retina 20．On the stage of senile cataract, which is wrong