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.
Dictionary entry details. â¢ OPHTHALMOLOGY (noun) Meaning: The branch of medicine concerned with the eye and its diseases. Classified under: Nouns denoting cognitive processes and contents. Hypernyms (ophthalmology is a kind of...): medical specialty; medicine (the branches of medical science that deal with nonsurgical techniques) Domain member category: ametropia ((ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia) emmetropia ((ophthalmology) the normal refractive condition of the eye in which there is clear focus of light on the retina) myopia; nearsightedness; shortsightedness ((ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred)