The term 'WHERE THE IRIS IS' is a crossword solution that can be broken down into two parts. The first part, 'EYE', is a three-letter word that refers to the organ of sight in humans and other animals. The second part, 'UVEA', is a four-letter word that refers to the middle layer of the EYE, which contains the iris. The iris is the colored part of the EYE that controls the amount of light entering the EYE. Therefore, the phrase 'WHERE THE IRIS IS' can be interpreted as referring to the location of the iris within the EYE.