The 5 Rs of Examining the Optic Disc (Malik Y. Kahook, MD)

[@RRDeshpande]

Beautiful! Clear, concise & simple to remember. Thank you!

[@nirvana613]

Short and concise, great presentation !

[@kamranrahmatnejad5640]

Excellent presentation. Thank you Dr. Kahook.

[@sheimelteb6764]

Excellent vedio, simple and conclusive Thank you

[@hw5176]

Great video. Very well explained 👏

[@saadalosemi]

Excellent mnemonic thanks 🙏🏻

[@salhasaeed6304]

Thank you

[@hayatal-shaibani300]

Sooooo helpful

[@bako3197]

Hi, how to measure diameter of optic disc in slit lamp?

[@malikkahook9368]

eyewiki.aao.org/Examination_of_the_Optic_Nerve_at_the_Slit-Lamp_Biomicroscope_with_a_Handheld_Lens The dimensions of the disc should be measured along its long axis making sure to account for the magnification factor of the lens being used - x1.00, x1.08, and x1.32 for the Volk Super 66, 78, and 90 diopter lenses, respectively. Other methods for determining disc size includes using the 5 degree aperture on the direct ophthalmoscope that closely approximates the size of a normal disc. Also, confocal scanning laser ophthalmoscopes can provide detailed measurements during examination. Care should be taken not to include the zones around the disc in the measurement such as the scleral lip or the zones of alpha and beta atrophy (see Step 7).