Publications by authors named "Muthukrishnan Vallinayagam"

Purpose: The current study aims to assess incidence of postoperative macular edema (PME), risk factors behind PME and outcomes after cataract surgery in eyes with retinal vein occlusion (RVO).

Methods: This retrospective study included 162 eyes of 162 RVO patients, who underwent cataract surgery between 1 January 2015 and 31 December 2019. Eyes with RVO which did not have cystoid macular edema (CME) on optical coherence tomography (OCT) within the immediate 1 month prior to surgery were included.

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Purpose: Dry eye symptoms can substantially affect the quality of life and visual outcome. There are several studies on ocular surface changes reported in diabetic patients. There is limited literature defining the relationship between dry eye with diabetic retinopathy (DR).

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To investigate the use of short-term postoperative endotamponade with perfluorocarbon liquids (PFCLs) for the treatment of giant retinal tear-associated rhegmatogenous retinal detachment (RRD). This retrospective study evaluated patients who had 2-stage surgery, which entailed pars plana vitrectomy (PPV) completed in 2 consecutive surgeries spaced 5 days apart, during which a short-term tamponade with PFCL was used (Group 1), and patients who had conventional single-stage PPV with long-term silicone oil (SO) tamponade (Group 2). The study comprised 74 eyes of 68 patients, 52 in Group 1 and 22 in Group 2.

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Background: Optic disc pit (ODP) is a rare congenital anomaly of optic nerve head and is associated with maculopathy. Scleral patch graft (SPG) as a therapeutic option is recently advocated.

Methods: This is a retrospective analysis of 54 patients with ODP maculopathy who were followed up for 12 months post-operatively.

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Purpose: Surgical outcome of presumed Autosomal Recessive Bestrophinopathy (ARB)with full thickness macular hole and retinal detachment managed by pars plana vitrectomy.

Methods: A retrospective observational case series of two eyes of two patients who underwent 25 G pars plana vitrectomy with peeling of internal limiting membrane and SF6 tamponade and were assessed with respect to best corrected visual acuity, fundus photographs and spectral domain optical coherence tomography.

Results: Type 1 closure of macular hole was achieved along with resolution of retinal detachment in both patients.

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Introduction: Cataract surgery constitutes one of the highest volume surgeries performed worldwide approximating 10 million annually, varying from 100 to 6000 per million population. Implantation of scleral fixated intra-ocular lens (SFIOL) is getting popular in managing difficult situations like aphakia, subluxated lens, and dislocated cataracts.

Objective: This retrospective series evaluated our experience with foldable 3-piece acrylic SFIOL implantation for various challenging surgical scenarios in a tertiary care ophthalmic institute in the southern part of India.

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Purpose: Cataract surgery in microphthalmic eyes is challenging due to anatomical restraints, hard bulky nucleus. This series aims to evaluate the safety and efficacy of couching of intraocular lens in irido-fundal coloboma with microphthalmos.

Setting: Tertiary care centre in South India.

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Background: Toxic anterior segment syndrome (TASS) is an uncommon complication of vitreoretinal surgery and is characterized by severe anterior chamber reaction, hypopyon, and limbus-to-limbus corneal edema.

Methods: Twenty-nine vitreoretinal surgeries were performed, of which 14 developed TASS in the early postoperative period. The operative records were reviewed retrospectively.

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Purpose: To describe the varied presentations of posterior keratoconus.

Methods: This is a 3-year institute-based retrospective study report from June 2015 to June 2018 that describes 13 eyes of 12 patients with varied presentations of posterior keratoconus, evaluating tomographic changes using Scheimpflug corneal tomography and anterior segment optical coherence tomography. Slit-lamp examination revealed circumscribed nebular corneal opacity with posterior corneal depression.

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Background: To assess the corneal endothelium, central corneal thickness and the factors associated with endothelial cell damage after phacoemulsification in diabetics in comparison with non-diabetics.

Methods: It was a case control study with 80 eyes each in the diabetic group and the control group. Intraoperative mydriasis, effective phaco time (EPT) and postoperative inflammation were measured.

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Neuroblastoma is an undifferentiated malignancy of primitive neuroblasts. Neuroblastoma is among the most common solid tumors of childhood. Orbital neuroblastoma is typically a metastatic tumor.

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