![]() The Canabrava Ring inserted into the congenital iris coloboma. We experienced no post-operative complications. Phenylephrine was also administered during the procedure. The Canabrava Ring remained stable during surgery and allowed the procedure to proceed safely and effectively. The intraocular lens (IOL) was implanted and a second iris suture was made at the coloboma. An iris suture was placed at the site of the defect to ensure closure and standard phacoemulsification was performed with the use of an ophthalmic viscosurgical device (OVD) a standard capsular tension ring was inserted to stabilize the capsular bag. To perform this maneuver, the section to be oriented in the downwards direction was inserted under the edge of the pupil, and then the section to be oriented in the upwards direction was positioned over the pupil edge the 60° ring opening was aligned with the iris defect, which left the pupil both round and centered ( Figure 3). The Malyugin Ring inserted into the congenital iris coloboma.Ī 2.2 mm incision was made, and a Canabrava Ring was implanted and docked to the iris. This paper describes the surgical implantation of a recently developed pupil expander, the Canabrava Ring (AJL Ophthalmic, Miñano, Spain) ( Figure 1) in a patient with an iris coloboma and a small pupil. However, these mechanical expanders were not formally designed to address the unique surgical challenges associated with iris defects. , 6 6 Hashemi H, Seyedian MA, Mohammadpour M. Comparison of 2 expansion devices for small pupil cataract surgery. Mechanical iris dilators are used during cataract surgery on individuals with small pupils that resist dilation with mydriatics among these devices are mechanical pupil ring expanders 5 5 Tian JJ, Garcia GA, Karanjia R, Lu KL. Modified flexible iris retractor to retract to superior iris and support inferior capsule in eyes with iris coloboma and inferior zonula deficiency. Eyes with iris defects are at greater risk for complications during cataract surgery due to poor pupillary dilation combined with an eccentric pupillary aperture 4 4 Sethi HS, Sinha A, Pal N, Saxena R. Phacoemulsification and intraocular lens placement in eyes with cataract and congenital coloboma: visual acuity and complications. Cataract extraction in a case of congenital coloboma of the iris. Cataract extraction in eyes with congenital coloboma. Among these defects are incomplete closures also known as iris colobomata 1 1 Jaffe NS, Clayman HM. The term “iris defect” includes any morphological change or lack of structural integrity in this region of the eye.
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