This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
Hyaluronic acid is present in 
Select and explain. 
A. Lens, B. Vitreous humour, C. Blood vessels, D. cornea
B: Vitreous humour
Answer: B: Vitreous humour 
Explanation: Vitreous is composed of water, collagen and hyaluronic acid. Vitreous Humour. Vitreous humor is the fluid-like gel, composed of approximately 98-99% water with trace amounts of hyaluronic acid, glucose, anions, cations, ions, and collagen, located in the posterior chambers of the eyes Reference: khurana 6th edition pg 567