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Iris transillumination defect and microhyphema syndrome
Journal - American Intra-Ocular Implant Society
|January 1, 1984
Summary
A delayed complication of sulcus-fixated posterior chamber lenses can cause iris transillumination defects and visually significant microhyphemas. This condition, affecting 5-15% of patients, requires ophthalmologist awareness for proper diagnosis and management.
Area of Science:
- Ophthalmology
- Medical Devices
- Complication Studies
Background:
- Sulcus-fixated posterior chamber intraocular lenses (IOLs) with specific haptic designs can lead to delayed complications.
- Iris transillumination defects and microhyphemas represent potential adverse events associated with these IOLs.
Purpose of the Study:
- To describe a previously undocumented delayed complication of sulcus-fixated posterior chamber lenses.
- To identify the clinical signs, incidence, and potential sequelae of this complication.
Main Methods:
- Retrospective case series analysis of 41 eyes with sulcus-fixated posterior chamber lenses.
- Clinical examination to identify iris transillumination defects and microhyphemas.
- Estimation of complication incidence within the patient population.
Main Results:
- A complication characterized by crescent-shaped iris transillumination defects overlying lens haptics was observed.
- Eight eyes (approximately 19.5% of the affected eyes) experienced visually significant microhyphemas.
- Estimated incidence of transillumination defects: 5-15%; incidence of lens-induced hemorrhage: >1%.
Conclusions:
- Sulcus-fixated posterior chamber lenses with elliptical polypropylene haptics and anterior angulation can cause delayed iris complications.
- Ophthalmologists must be aware of these transillumination defects and microhyphemas when evaluating patients with these IOLs presenting with visual disturbances.