Rings in ophthalmology

Rings in ophthalmology

1-Ring Keratitis: The hallmark of Acanthamoeba keratitis.

2-Kayser-Fleischer’s ring: Wilson’s disease

3-Corneal rust ring: 

A small, reddish brown, circular opacity remained in the cornea after the removal of an iron foreign body.

4-Coats’ white ring: 

Remnants of a foreign body. The remnants are fine iron deposits in the cornea.

5-Fleischer’s ring: 

Visible all around the base of cone in Keratoconus

6-Pseudo-Fleischer’s ring: 

Iron deposition can be seen in Hyperopia LASIK correction

7-Soemmering’s ring: 

Early opacification of lens capsule after cataract extraction

8-Vossius’ ring: 

Iris Pigment on anterior lens capsule in concussion injury to eye

9-Weiss ring: 

Epipapillary glial tissue torn from the optic disc in Posterior vitreous detachment (PVD)

10-Double ring sign: 

With the peripheral margin of the encircling ring corresponding to the border of a normal-sized optic disc. Seen in Hypoplasia of the Optic Disc.

11- Golden Ring : 

A golden ring within the lens is evidence of successful delineation.

12-Intrastromal Corneal Ring Segments (ICRS):

are implanted in the deep corneal stroma to modify the corneal curvature. Used in keratoconus,PMD. 

13-Capsular tension rings (CTRs) :

were used for zonular reinforcement in eyes with a weak zonular apparatus, such as in pseudoexfoliation and Marfan's syndrome, and when zonular rupture or dehiscence occurs after blunt or surgical trauma.

14-Flieringa ring: 

A stainless steel ring sutured to the sclera to support the globe during difficult eye operations. used usually in corneal transplant surgeries 

15-Wessely immune ring: 

refers to the formation of a ring-shaped infiltrate in the corneal stroma that arises from a type 3 immune response involving antigen-antibody complex formation.