A dilated fundus exam (DFE) is used to detect a number of common eye disorders, including macular degeneration and glaucoma. During a dilation exam, the eye doctor will use special eye drops to dilate, or widen, your pupils. This allows them to get a better view of the inside of your eyes, including the retina, optic nerve, and blood vessels. Here's what you can expect during a dilation exam:

Eye drops: The eye doctor will put drops in your eyes to dilate your pupils. The drops may sting or burn slightly when first applied, and it may take 20-30 minutes for them to take effect.

Blurred vision: Once the drops have taken effect, your vision will become blurred and your eyes will be more sensitive to light. You may also have difficulty focusing on objects up close.

Eye exam: With your pupils dilated, the eye doctor will use various instruments to examine the inside of your eyes. This may include a slit lamp or ophthalmoscope.

Duration: The effects of the dilation drops can last several hours, and you should avoid bright lights and driving until your vision returns to normal.

Overall, a dilation exam is an important tool for assessing the health of your eyes and detecting potential problems early. While the drops can cause temporary discomfort and vision changes, they are generally safe and well-tolerated. Your eye doctor will advise you on any precautions you should take after the exam, such as wearing sunglasses to protect your eyes from bright light.