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Updated: Mar 25, 2026

Iris Fixation via External Pentagram Suturing
Published on: May 5, 2022
Creeping posterior synechiae following hyperopic iris-fixated phakic implants
Marco Messina1, Mohamed Elalfy1, Usama Fares1
1Academic Section of Ophthalmology and Visual Sciences, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK.
Posterior synechiae (PS) can occur after iris-fixated phakic IOL surgery in hyperopic eyes. Surgical removal of the IOL and cataract surgery successfully restored vision in these cases.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Intraocular Lenses
Background:
- Iris-fixated anterior chamber phakic IOLs are effective for correcting ametropia.
- Hyperopic eyes present unique considerations for IOL implantation.
- Posterior synechiae (PS) and pigment dispersion are potential complications.
Observation:
- Three hyperopic eyes developed PS and pigment dispersion 4-6 weeks post-surgery.
- Initial treatment with synechiolysis and pupil stretching was unsuccessful due to recurrence.
- All three patients underwent IOL explantation and phacoemulsification with intraocular lens implantation.
Findings:
- Iris-fixated phakic IOL implantation can lead to PS in hyperopic eyes.
- PS may be more prevalent in hyperopic eyes compared to myopic eyes.
- Age could be a contributing factor to PS development.
Implications:
- This case report highlights the risk of PS with iris-fixated phakic IOLs in hyperopic patients.
- Careful patient selection and pre-operative counseling are crucial.
- Alternative surgical strategies may be necessary for managing hyperopia in certain patients.
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