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Membranectomy with optic capture in a paediatric patient with VAO

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© BMJ Publishing Group Limited 2022. No commercial reuse. See rights and permissions. Published by BMJ. DESCRIPTION Visual axis opacification (VAO) is a common complication of paediatric cataract surgery. Posterior… Click to show full abstract

© BMJ Publishing Group Limited 2022. No commercial reuse. See rights and permissions. Published by BMJ. DESCRIPTION Visual axis opacification (VAO) is a common complication of paediatric cataract surgery. Posterior continuous curvilinear capsulorhexis (PCCC) and good anterior vitrectomy are known to reduce the prevalence of VAO. Inadequate anterior vitrectomy may be a cause of VAO, where retained anterior hyaloid phase may act as a scaffold for proliferation of lens epithelial cells. Optic capture is another technique that has been described to prevent the formation of VAO. We describe the case of a 4yearold female child with operated lens aspiration with PCCC with anterior vitrectomy with a three piece intraocular lens (IOL) in the sulcus, and presented to us with clinically significant VAO. The 4yearold pseudophakic female child was referred to our centre for management of a visually significant VAO in the left eye. Antenatal history was uneventful. The child was born at full term by lower segment caesarean section in view of oligohydramnios. She had a birth weight of 3 kg. There was no history of neonatal intensive care unit (NICU) stay in postnatal period. She is a known case of cerebral palsy (mixed type) with global development delay. She was diagnosed with unilateral cataract at the age of 2 years and 7 months and was operated for left eye lens aspiration with PCCC with anterior vitrectomy, and a threepiece IOL was placed in the sulcus. On followup, she was diagnosed with lefteye VAO, first identified 3 months after surgery. She was referred to our centre for the management of the same. The child presented to us at the age of 4 years. On distant direct ophthalmoscopy, we found a total cataract in right eye and VAO involving central visual axis in the left eye. The child was scheduled for examination under anaesthesia followed by righteye lens aspiration with PCCC with anterior vitrectomy with IOL in bag and membranectomy in the left eye in two different sittings. Surgery of the right eye went uneventful. Examination Under Anaesthesia (EUA) findings of the left eye revealed central fibrous VAO (figure 1A) with decentred threepiece IOL in the sulcus. Ultrasound biomicroscopy revealed IOL in the sulcus with hyperechoic membrane posterior to the IOL (figure 1B). Two 1 mm side ports were made and viscoelastic was injected in the anterior chamber, and free mobilisation of the IOL was confirmed with sinskey hook. Posterior membrane was removed using anterior vitrector on cutirrigation/aspiration mode. It was noted that anterior and posterior capsulorhexis margins were adherent to each other. Around 5 mm opening was made and optic of threepiece IOL was captured behind the sulcus margins. Stability of the IOL was confirmed; irrigation and aspiration of viscoelastic were done and wounds were hydrated (video 1). Postoperative day 1 showed central and stable IOL with a postoperative retinoscopy of +1.25 D on vertical axis and +1.75 D on horizontal axis (at 50 cm). The child was prescribed spherical equivalent with +2D near add and was started on topical antibiotics, steroids and cycloplegics with appropriate tapering. On 1week followup, the visual axis of both eyes was clear with wellcentred IOLs in both eyes. The child is kept on followup.

Keywords: vao; eye; anterior vitrectomy; child; left eye; iol

Journal Title: BMJ Case Reports
Year Published: 2022

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