Dilation is not always necessary for every eye exam, but it can be an important part of a comprehensive evaluation. When your eyes are dilated, it allows Dr. Campbell to get a better view of the inside of your eyes, including the retina and optic nerve. This can help in the early detection of eye conditions like glaucoma, macular degeneration, and diabetic retinopathy. However, not all eye exams require dilation. Dr. Campbell will determine whether dilation is necessary based on your individual eye health and any specific concerns.