Intraocular lens dislocation treatment


It affects between

0,05 %

and 3 % of patients who have undergone cataract surgery



symptom vision loss

Its incidence increases


years after cataract surgery

What is intraocular lens dislocation?

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.

What causes it?

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

How can it be prevented?

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.


The most characteristic symptom of IOL dislocation is loss of vision, although some patients also complain of blurred or unfocused vision. It does not cause pain.

Associated treatments

If the lens is in the vitreous cavity, treatment consists of performing a vitrectomy in order to remove it and implant another or reposition it. In cases where the IOL has not fallen into the vitreous cavity, the surgeon can simply reposition it without the need to perform a vitrectomy.


IMO Institute of Ocular Microsurgery

Josep María Lladó, 3
08035 Barcelona
Phone: (+34) 934 000 700
See map on Google Maps

By car

GPS navigator coordinates:
41º 24’ 38” N – 02º 07’ 29” E

Exit 7 of the Ronda de Dalt (mountain side). The clinic has a car park with more than 200 parking spaces.

By bus

Autobus H2: Rotonda de Bellesguard, parada 1540

Autobus 196: Josep Maria Lladó-Bellesguard, parada 3191

Autobuses H2, 123, 196: Ronda de Dalt – Bellesguard, parada 0071

IMO Madrid

C/ Valle de Pinares Llanos, 3
28035 Madrid
Phone: (+34) 910 783 783
See map in Google Maps

Public transport

Metro Lacoma (líne 7)

  • Lines 49 & 64, stop “Senda del Infante”
  • Line N21, stop “Metro Lacoma”


Patient care:
Monday to Friday, 8 a.m. to 8 p.m.

IMO Andorra

Av. de les Nacions Unides, 17
AD700 Escaldes-Engordany, Andorra
Phone: (+376) 688 55 44
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IMO Manresa

C/ Carrasco i Formiguera, 33 (Baixos)
08242 – Manresa
Tel: (+34) 938 749 160
See map in Google Maps

Public transport

FGC. Line R5 & R50 direction Manresa. Station/Stop: Baixador de Manresa


Monday to Friday, 08:30 A.M – 13:30 PM / 15:00 PM – 20:00 PM

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