A dilated eye exam provides a detailed assessment of your retina (the back of your eyes), which is critical for good vision. In certain cases, a consultation with a retina specialist may be required, and you will be informed in advance.  In order to perform a dilated eye exam, dilating drops are required. The effect of dilation lasts for a few hours. During this time, your vision will be blurry and sensitive to light, so please plan ahead accordingly.