Back to Health Risk Assessment â Body Composition Because water is contained primarily in fat-free tissues - the muscles - the percentage of total body water can vary widely between individuals. Those with a high percent body fat can be as low as 40% total body water, while very lean individuals and athletes can attain 70%. Water is the essential component of all vital fluids and the medium of transport in every biological exchange.
Definition of ophthalmology. : a branch of medical science dealing with the structure, functions, and diseases of the eye.
Ophthalmology (/ËÉfÎ¸ÉËlËmÉËlÉdÊi/ or /ËÉpÎ¸ÉËlËmÉlÉdÊi/)[1] is the branch of medicine that deals with the anatomy, physiology and diseases of the eyeball and orbit.[2] An ophthalmologist is a specialist in medical and surgical eye problems.