What average vertical diameter range is given for the iris?

The average vertical diameter range given for the iris is indeed between 9-11 mm. This measurement is significant in various fields of ophthalmology and optometry as it relates to the anatomy and physiology of the eye. The size of the iris can affect how much light enters the eye and plays a crucial role in vision.

Understanding this range is important for eye care professionals when diagnosing and treating various vision problems. It also helps in evaluating the health of the eye or planning treatments, such as cataract surgery or fitting contact lenses. By knowing the typical size of the iris, practitioners can identify abnormalities or changes that may indicate underlying health issues.