Dislocated Intraocular Lens (IOL)

A dislocated intraocular lens is a rare condition that is characterized by the lens moving out of place. The dislocation may present in varying degrees of severity, ranging from instability causing the lens to shake to complete dislocation within or out of the capsular bag.

What Causes Intraocular Lens Dislocation?

The intraocular lens is surrounded by a collagen-based capsule that provides it with stability and protection while still allowing the lens to change shape for accommodation. The capsular bag is connected to the ciliary muscles by a ring of fibrous strands called the zonule.  Dislocation of the IOL occurs when there is the instability of the capsular bag or the zonule.

Risk factors of dislocated intraocular lens:

  • Cataract surgery
  • Vitreoretinal surgery
  • History of uveitis
  • Aging
  • Axial myopia
  • Trauma
  • Retinitis Pigmentosa
  • Diabetes Mellitus
  • History of acute angle-closure attack
  • Connective tissue disorders


The symptoms of a dislocated intraocular lens depend on the severity of the dislocation and include:

  • Blurry vision
  • Diplopia
  • Decrease in vision
  • Seeing the edge of the lens
  • Headaches

Source: The The American Society of Retina Specialists. (n.d.). Intraocular Lens Dislocation – Patients – The American Society of Retina Specialists. ASRS. Retrieved May 2, 2022, from https://www.asrs.org/patients/retinal-diseases/27/intraocular-lens-dislocation