Intraocular lens dislocation treatment

Intraocular lens (IOL) dislocation is a very rare condition that affects patients who have undergone cataract surgery and consists of the displacement of the implanted lens towards the vitreous cavity of the eye. On other occasions, the lens becomes decentred from the visual axis but does not fall into the vitreous cavity (subluxation).

Displacement of the intraocular lens causes changes to vision and, if it falls into the vitreous cavity, it can produce traction due to the eye’s own movement, resulting in retinal detachment and/or vitreous haemorrhage.

It is estimated that between 0.05% and 3% of patients who have undergone cataract surgery will suffer from a spontaneous dislocation of the IOL. Some studies show that its incidence is higher 5 years after surgery.

Sufferers usually have the following disorders or previous procedures:

• Crystalline pseudoexfoliation syndrome (PSX), which consists of breakage of the fibres of the ligaments that support the natural lens of the eye (zonule).
• High myopia
• Previously performed surgical procedures, such as glaucoma and vitrectomy
• Eye injuries

IOL dislocation cannot be prevented as it occurs spontaneously. It is important, however, for patients who have undergone cataract surgery to have regular check-ups and urgently visit the ophthalmologist if they notice any loss of vision.