electroretinography…

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what the risks are contact lens electrode on eye, erg, electroretinography, test to measure the electrical response, the eye's light-sensitive cells, rods, cones, electrodes, placed on the cornea, skin near the eye, are comfortably seated, chair, anesthetic drops, placed in eyes, causing them to, become numb, eyes, propped open, an electrode, on each eye, electrode measures the electrical activity, the retina in response to light, information, electrode goes to a monitor, where it, viewed, recorded, normal response pattern has waves, a, b, take the readings in normal room light, again, in the dark, after allowing 20 minutes, eyes to adjust, a light is flashed, electrical response, flash is recorded, no special preparation is necessary, infants, children, test depends on child's age, level of trust, prepare child, infant test, procedure preparation, birth to 1 year, toddler test, procedure preparation, 1 to 3 years, preschooler test, procedure preparation, 3 to 6 years, schoolage test, procedure preparation, 6 to 12 years, adolescent test, procedure preparation, 12 to 18 years, probes that rest on eye, an eyelash, test takes, one hour to perform, both hereditary, acquired disorders, the retina, evaluated, useful in determining, retinal surgery, normal test results, a normal a, b pattern in response to each flash, decreased electroretinography values, indicate any, rod, cone degenerative diseases rod-cone dystrophy (retinitis pigmentosa, arteriosclerosis, giant cell arteritis, mucopolysaccharidosis, retinal detachment, siderosis, iron poisoning, vitamin a deficiency cornea, get a superficial scratch, electrode, no risks associated, should not rub eyes, an hour, could injure the cornea, discuss, what it means.