You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The focusing system of eye is composed of several refractive structures. Which of the following has the maximum refractive index? and explain in detail?
Refractive index: It is the ratio of sine of angle of incidence to the sine of angle of refraction. The refractive index of, Cornea: 1.37 Aqueous humour: 1.33 Crystalline lens: 1.42 Vitreous humour: 1.33 Also know: The total dioptric power of the eye is about +60 D out of which about +44 D is contributed by cornea and +16 D by the crystalline lens. Ref: Ophthalmology By A. K. Khurana, 3rd edition, Page 50.