He may use an odd looking helmet called an "indirect ophthalmoscope ... making a yearly dialated eye exam well worth the time.

Fundic exam. The posterior portion of the ... use indirect ophthalmoscopy to examine the back of the eye (Fig. 3). A direct ophthalmoscope or panophthalmoscope may also be used to visualize ...

The doctor may also do fluorescein angiography, a dye injected into your bloodstream via your arm, to highlight any leaking ...

says that an eye exam can reveal health ailments such as diabetes and high blood pressure that are affecting a person's entire body. "Your eyes are like a window into your overall systemic health ...