Retinal detachment is diagnosed through a comprehensive dilated eye exam with our doctors at Elman Retina Group. After widening your pupil with special dilating eye drops, our doctors look inside your eye using a light magnification instrument. Magnification lenses, or a microscope called a slit lamp, may be used to get a better look. In some cases, an ultrasound or optical coherence tomography (OCT) eye scan may be taken to look at the retina.