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Updated: Aug 16, 2026

Iris Fixation via External Pentagram Suturing
Published on: May 5, 2022
Pupil ovalization after phakic intraocular lens implantation is associated with sectorial iris hypoperfusion
Peter Fellner1, Bertram Vidic, Yashin Ramkissoon
1Department of Ophthalmology, Medical University Graz, Auenbruggerplatz 4, A-8036 Graz, Austria.
Objective:
To investigate iris perfusion in patients with and without pupil ovalization after phakic intraocular lens implantation.
Methods:
Comparative retrospective randomized case series of 6 participants, each with a regular pupil, and 6 participants with pupil ovalization after phakic intraocular lens implantation for high myopia were included in the study. Indocyanine green angiography was performed between 20 and 40 months (mean +/- SD, 26 +/- 6.1 months) after lens implantation.
Results:
Iris perfusion defects were found in 5 of 6 patients with pupil ovalization. No perfusion deficits were noted in patients with round pupils.
Conclusion:
Iris ovalization after phakic intraocular lens implantation may be associated with a lack of iris perfusion and with secondary ischemia. Patients with these lenses and pupil ovalization should be followed regularly.
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