Fleischer ring

Not to be confused with Kayser–Fleischer ring.
Fleischer ring
Fleischer ring in keratoconus, by Mahmoud et al., 2022.[1]
Differential diagnosiskeratoconus

Fleischer rings are pigmented rings in the peripheral cornea, resulting from iron deposition[2] in basal epithelial cells, in the form of hemosiderin.[3] They are usually yellowish to dark-brown, and may be complete or broken.[4] The rings are best seen using the slit lamp under cobalt blue filter.[4]

They are named for Bruno Fleischer.[5]

Fleischer rings are indicative of keratoconus,[6] a degenerative corneal condition that causes the cornea to thin and change to a conic shape.

  1. ^ Mahmoud, Mohamed Magdy Ibrahim; Hamdy, Alaa Mohamed; Mohamed, Ashraf Bori; Diaa El Din, Yasmine Ahmed (2022-07-01). "An Updated Overview of Keratoconus Management: Review Article". The Egyptian Journal of Hospital Medicine. 88 (1). Egypts Presidential Specialized Council for Education and Scientific Research: 2777–2780. doi:10.21608/ejhm.2022.241951. ISSN 2090-7125. S2CID 249531881.
  2. ^ "Cornea & External Diseases-Keratoconus Fleischer's Ring". Archived from the original on 2009-02-10. Retrieved 2008-10-24.
  3. ^ "Definition: Fleischer's ring from Online Medical Dictionary". Archived from the original on 2007-08-13. Retrieved 2008-10-24.
  4. ^ a b "Fleischer's Ring | Columbia Ophthalmology". 2021-01-12. Archived from the original on 2021-01-12. Retrieved 2021-01-12.
  5. ^ Fleischer, B (1906). "Über Keratokonus und eigenartige Pigmentbildung in der Kornea". Münchener medizinische Wochenschrift. 53: 625–626.
  6. ^ Hiratsuka Y, Nakayasu K, Kanai A (2000). "Secondary keratoconus with corneal epithelial iron ring similar to Fleischer's ring". Japanese Journal of Ophthalmology. 44 (4): 381–6. doi:10.1016/S0021-5155(00)00179-9. PMID 10974294.