I-SEE-CONE!


Keratoconus is a non - inflammatory, progressive condition where the central or paracentral cornea undergoes progressive thinning and steepening causing irregular astigmatism and a ‘cone shaped’ cornea. ⁣

𝐄𝐱𝐭𝐞𝐫𝐧𝐚𝐥 𝐬𝐢𝐠𝐧𝐬 𝐨𝐟 𝐊𝐞𝐫𝐚𝐭𝐨𝐜𝐨𝐧𝐮𝐬 ⁣⁣

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𝐌𝐮𝐧𝐬𝐨𝐧’𝐬 𝐒𝐢𝐠𝐧⁣⁣⁣

V shaped conformation of lower lid produced by the ectatic cornea in downgaze ⁣⁣⁣

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𝐑𝐢𝐳𝐮𝐭𝐭𝐢’𝐬 𝐒𝐢𝐠𝐧⁣⁣⁣

Sharply focused beam of light near the nasal limbus produced by lateral illumination of the cornea ⁣⁣⁣




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Other external signs : ⁣⁣⁣

Charleux sign: Dark reflex in centre of cornea with distant direct ophthalmoscope in dilated pupils ⁣⁣⁣

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Scissoring reflex on retinoscopy ⁣⁣⁣

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Image from Rajan Eye Care Hospital⁣⁣

#ophthalmology #ophthal #cornea #keratoconus

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