Rizzuti’s corneal light reflex seen in keratoconus (Video)

This video shows what the Rizzuti’s light reflex looks like in eyes with keratoconus. You perform this test by shining a penlight into the eye at an oblique angle. The cone shape of the cornea causes the resulting iris light reflection to a point. This is hard to explain, so you should check out the video.

Other exam findings of keratoconus include Munson’s sign (notching of the lower eyelid when looking down) and a Fleischer ring (a corneal iron line around the base of the cone).

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rizzutisign.wmv (2.7 meg, Windows video file)

Screenshots

Rizzuti Sign
This video shows what the Rizzuti’s light reflex looks like in eyes with keratoconus. You perform this test by shining a penlight into the eye at an oblique angle. The cone shape of the cornea causes the resulting iris light reflection to a point. This is hard to explain, so you should check out the video.
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Dr. Timothy Root is a practicing ophthalmologist and cataract surgeon in Daytona Beach, Florida. His books, video lectures, and training resources can be found at:

2 COMMENTS

  1. Many thanks for this very generous and high-quality website

    This is the very first time I am actually laying eyes on Rizutti’s sign !

  2. Great video, I have read about this sign but I did not understand how it was obtained. Thanks to you, a master in slit lamp, I finally understand it. Very best regards, thanks so much for your great videos y tips.

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