(of the eye) the distance between the lens and the point behind the lens at which light from a distant object is focused. In a normally sighted person the point of focus is on the retina, but in *myopia (short-sightedness) the focus is in front of the retina and in *hypermetropia (long-sightedness) the point of focus is beyond the retina.
(FSGS) a condition in which there is scarring in some (focal) glomeruli that affects only part (segmental) of the glomerular capillary tuft. Primary FSGS overlaps with *minimal change nephropathy and typically presents with the *nephrotic syndrome. Secondary FSGS has a wide range of causes, from viral infections, including HIV, to haemodynamic changes associated with reduced renal mass, hypertension, and obesity, and is usually associated with less severe proteinuria.... focal segmental glomerulosclerosis
the measured distance that a patient can walk before he or she is stopped by pain in the muscles, usually the calf muscles, or breathlessness. It is a useful estimate of the degree of impairment of the blood supply. See claudication.... walking distance
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