Iridodialysis
-Localised separation/detachment of iris root from its attachment to the ciliary body
CAUSES:
-Blunt trauma
-Penetrating trauma
-Iatrogenic during intraocular surgery
SYMPTOMS:
-Small iridodialysis may be asymptomatic
-Superior iridodialysis will be covered by upper eyelid and can be asymptomatic
-Large and Temporal iridodialysis are usually symptomatic: Monocular diplopia, glare, photophobia
SIGNS:
-Black area at the periphery of the iris with D shaped pupil
-Visible red reflex through the black area
-Corectopia/polycoria
-It is part of the 7 rings of trauma:
Sphincter pupillae tears
Iridodialysis
Angle recession
Cyclodialysis
Trabecular meshwork tear
Zonular dialysis
Retinal dialysis
-Can be associated with angle recession, glaucoma, hyphema, lens dislocation
-Traumatic iridodialysis→ high risk of angle recession→ glaucoma
TREATMENT:
-Tinted contact lenses
-Surgical iridodialysis repair - with sutures and can be combined with pupilloplasty - Open chamber/ closed chamber technique, McCannel technique, Hangback technique, Sewing machine technique, Cobbler technique
-Management of hyphema and glaucoma
Image from Rajan Eye Care Hospital
