This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Optics and Errors of Refraction, Subject name: Ophthalmology
Power of normal eye is: 
Select and explain. 
A. +6D, B. +10D, C. +16D, D. +60D
D: +60D
Answer: D: +60D 
Explanation: Total dioptric power of this schematic eye is 58.64 [?] 60D Refractive Power of Cornea =+45 D Refractive Power of Lens =+15 D