IQ
Abbreviation for intelligence quotient, an attempt to measure the intelligence of someone.
The IQ score is usually based upon the results of a written test. To calculate the IQ, the person’s mental age (as determined by a test) is divided by their chronologic age and the result is multiplied by 100.
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- IRB
Institutional Review Board.
- Iridectomy
The process of making a hole in the iris. Iridectomy is a treatment for glaucoma.
- Iridology
The practice of diagnosing disease by examining the iris of the eye. Although some diseases affect the eye, iridology is not considered scientific medicine.
- Iris
The circular, colored curtain of the eye. The opening of the iris forms the pupil. The iris helps regulate the amount of light that enters the eye.
- Iris, speckled
Due to little white (or lightly colored) spots that are slightly elevated on the surface of the iris. These spots, arranged in a ring concentric with the pupil, occur normally, but more frequently, in Down syndrome (trisomy 21). They were described in 1924 by Thomas Brushfield, are called Brushfield’s spots, and are due to aggregation […]