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

Timothy Root, MD
5 Comments

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.
Timothy Root, MD

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 www.TimRoot.com

5 Comments

  1. Hon-Tym Wong says:

    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 !

    Reply
  2. Gustavo Sanchez OD says:

    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.

    Reply
  3. Dr.Gamal Saif says:

    You are creative Ophthalmologist Dr.Timothy Root.

    Reply

  4. Thank you, Dr. Timothy Root! You are doing a great job!

    Reply
  5. Bhavya sri sai Vejendla says:

    Thank you very much

    Reply

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