This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Anatomy
[{'content': 'Advantage of contact lens over normal glasses; \nSelect and explain. \nA. Prismatic effect will less, B. Prevention from UV rays, C. Decrease inflammation, D. Decrease infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Advantages: Less magnification (5%) of the image, elimination of aberrations and prismatic effect of thick glasses wider and better field of vision, cosmetically better accepted by young persons. Disadvantages: more cost, cumbersome to wear, especially in old age and in childhood, corneal complications may occur (Inflammation/ Infection).', 'role': 'assistant'}]