eMedicine Specialties > Ophthalmology > Lens
Intraocular Lens Dislocation: Differential Diagnoses & Workup
Updated: Jul 25, 2007
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
Differential Diagnoses
Other Problems to Be Considered
Gradual or acute loss of vision in patients with intraocular lenses
Workup
Imaging Studies
- If a vitreous hemorrhage or severe corneal edema is present, B-scan ultrasonic imaging should be used to determine the position of the IOL and the presence or absence of retinal detachment.
Histologic Findings
Studies in cadaver eyes indicate that transscleral sutures must exit the sclera 0.8 mm posterior to the limbus in the vertical meridian and 0.46 mm posterior to the limbus in the horizontal meridian to be within the true ciliary sulcus.
Postmortem studies disclosed that scarring does not occur in the vicinity of the sutured IOL. The haptics are surrounded by a thin fibrous capsule at their attachment site. The transscleral portion of the suture is characterized by the lack of inflammation. In addition, the suture tip usually is exposed externally. If the fixation sutures were cut, the IOL would dislocate back into the vitreous cavity. It was concluded that the stability of the IOL was primarily a result of intact transscleral sutures and not fibrous encapsulation or ciliary sulcus placement of the haptics.
More on Intraocular Lens Dislocation |
| Overview: Intraocular Lens Dislocation |
Differential Diagnoses & Workup: Intraocular Lens Dislocation |
| Treatment & Medication: Intraocular Lens Dislocation |
| Follow-up: Intraocular Lens Dislocation |
| References |
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References
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Further Reading
Keywords
IOL dislocation, IOL, cataracts, cataract surgery, Nd:YAG posterior capsulotomy
Differential Diagnoses & Workup: Intraocular Lens Dislocation