Let’s face it . . . no one looks forward to having their eyes dilated so it’s important to understand why doing so is an essential part of a comprehensive eye exam.
Dilation drops are instilled in each eye causing the pupil to dilate or widen. When dilated, the pupil allows in more light giving a better view of the back of the eye. A special magnifying lens, called a condensing lens, is then used to examine the internal structures of the eye. The illustration clearly shows how much more of the inside of the eye, including the optic nerve, can be seen when the pupil is dilated.
Many common eye diseases and conditions, such as glaucoma, diabetic eye disease, age-related macular degeneration, and early stage retinal detachments, often have no symptoms. A dilated eye exam is the only way to detect them in their early stages.