Publications by authors named "Lay Leng Seah"

Article Synopsis
  • The study investigates biomarkers for severe Graves' orbitopathy (GO) by analyzing gene expression in orbital fibroblasts and comparing it to tear protein profiles from previous research.* -
  • Researchers grew fibroblasts from adipose tissue of nine GO patients and performed RNA sequencing to identify differentially expressed genes, revealing significant upregulation and downregulation patterns.* -
  • The findings highlighted S100 calcium-binding protein A4 (S100A4) as a consistently downregulated gene, suggesting its potential role as a biomarker for GO.*
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We present a 61-year-old Chinese female who had a history of angioinvasive follicular thyroid cancer (FTC) treated with total thyroidectomy 16 years ago, without radioactive iodine (RAI) treatment who now presents with pretibial myxedema (PTM) followed by active severe Graves' ophthalmopathy (GO) requiring pulse steroids and radiotherapy.

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Aim: To study the clinical presentation, disease characteristics, and management approach for children with thyroid eye disease (TED) over a 10 year period in a multidisciplinary Paediatric Thyroid Eye Disease Clinic at a tertiary care referral center.

Methods: Retrospective case series of patients with TED at Kandang Kerbau Women's and Children's Hospital (KKWCH) Singapore between August 2006 to June 2015. The diagnosis of TED was clinical based on the Bartley criteria.

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Purpose: Intravenous antibiotic prophylaxis is used for many clean-contaminated surgeries or clean surgeries with an implant, but its value for clean orbital surgery has not been determined. This study investigated infection risks and adverse effects related to antibiotics in patients undergoing orbital surgery.

Methods: A prospective, nonrandomized comparative case series of all patients undergoing orbital surgery with participating surgeons between October 1, 2013, and March 1, 2015.

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Purpose: To compare the efficacy and safety of adjunctive oral methotrexate with intravenous pulsed methylprednisolone against methylprednisolone alone in the treatment of severe thyroid eye disease.

Methods: Retrospective review of clinical data of patients with severe sight-threatening thyroid eye disease with compressive optic neuropathy treated with methylprednisolone with and without methotrexate. Eye disease outcome measures (e.

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There are no reliable biomarkers to predict thyroid eye disease (TED) in patients with autoimmune thyroid disease (AITD) currently. Several evidences support the involvement of the lacrimal gland in TED. The aim of our study was to quantitatively correlate the changes in tear protein profile with increasing severity of TED.

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Purpose: Current instruments to assess thyroid eye disease (TED) quality of life (QoL) were not developed using modern psychometric theory and may not be applicable to Asian populations. Therefore, we developed a psychometrically robust questionnaire, the Singapore Thyroid Eye Disease Quality of Life questionnaire (STED-QoL), for assessing QoL in Asian patients.

Methods: This cross-sectional study was conducted at the Singapore National Eye Centre between 2012 and 2015.

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Purpose: The primary aim of this study is to isolate cytokines specific for active Graves' orbitopathy (GO) in the tears of affected patients. The secondary aim is to identify other cytokines of interest and to look at the profile of their levels over time.

Methods: This is a prospective pilot study conducted at the Singapore National Eye Centre.

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Purpose: Cosmetic and functional outcomes of frontalis suspension surgery using autologous fascia lata (FL) or silicone rods (SRs) in pediatric congenital ptosis.

Design: Retrospective case series.

Study Subjects: Patients with congenital ptosis, aged 18 years or younger, during the period under study (2005-2011) at the Singapore National Eye Centre.

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Purpose: 1) To assess the clinical profile and treatment outcomes of orbital inflammatory disease in the local population, and 2) classify patients using current histopathological criteria.

Methods: Ten-year retrospective clinicopathologic review of patients diagnosed with orbital inflammatory disease who underwent tissue biopsy from January 2001 to December 2011 at a tertiary referral centre in Singapore. Data collection included patient demographics, clinical presentation, investigations, systemic disease, histopathology review, clinical classification, medical and surgical management, response to treatment and recurrence rates.

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Objective. To analyze changes in vital signs (heart rate (HR), systolic (SBP), and diastolic blood pressure (DBP)) during and after intravenous methylprednisolone (IVMP) and any other adverse effects. Methods.

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Purpose: To describe clinical, radiologic, and safety outcomes of orbital floor fracture repair using a novel bioresorbable polycaprolactone (PCL) mesh implant (Osteomeshâ„¢, Osteopore International, Singapore).

Methods: This is a prospective interventional case series of orbital floor fractures repaired using a novel PCL mesh implant. Clinical evaluation was conducted at presentation and postoperatively at 1, 4, 12, 24 and 48 weeks.

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Purpose: Identify a reproducible measure of axial globe position (AGP) for multicenter studies on patients with thyroid eye disease (TED).

Methods: This is a prospective, international, multicenter, observational study in which 3 types of AGP evaluation were examined: radiologic, clinical, and photographic. In this study, CT was the modality to which all other methods were compared.

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Aim: To assess the effects of hypoxia on human orbital fibroblasts (OF) on adipogenesis and adipocytokine production.

Methods: Human OF were derived from tissues obtained from patients with Graves' ophthalmopathy (GO) and from patients without known thyroid diseases undergoing blepharoplasty. The OF were cultured separately under normoxic and hypoxic conditions.

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Purpose: To evaluate the demographics, presentation, and surgical outcomes of patients undergoing ptosis surgery in an Asian population in a prospective manner.

Methods: A prospective ptosis audit was conducted over a 2-year period from January 2010 to December 2011 in a tertiary eye hospital in Singapore. All patients undergoing ptosis surgery by, or under the supervision of, an oculoplastic-trained consultant in the institution were included.

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Purpose: To present a case series on the management options for capillary hemangiomas involving the eyelid and orbit.

Methods: This is a retrospective chart review of clinically diagnosed capillary hemangioma cases involving the periocular region treated at two local eye institutions. The patients' demographics and clinical presentation - including visual acuity, refractive error, periorbital and orbital examinations, and ultrasound and magnetic resonance imaging findings - were reviewed.

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Objective: To describe a case of periorbital arteriovenous fistula (AVF) treated with a combined approach of endovascular intervention and surgical excision.

Case Report: A 21-year-old lady presented with a vascular lump followed blunt trauma above the left medial brow area. Computed Tomography Angiogram (CTA) and Angiography of the internal and external carotid arteries showed presence of an AVF with main feeder vessel from a hypoplastic left ophthalmic artery.

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Purpose: To describe the histopathological distribution of biopsied lacrimal gland lesions in a tertiary referral centre in Singapore.

Methods: This was a retrospective chart review. Clinical records of patients who underwent lacrimal gland biopsy at a tertiary referral centre in Singapore between 2000 to 2010, were reviewed.

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Ethnic differences in a number of eye conditions have been described. The literature on ethnic differences in Graves' ophthalmopathy (GO) is limited. There is some evidence to suggest Asian patients with GO may manifest milder phenotypic features of GO, with less proptosis and evidence of extraocular muscle involvement and restriction.

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We present a patient who developed an orbital abscess secondary to a retained organic (wooden) foreign body after a fall. Clinically, he had a right sub brow fistula exuding purulent discharge, four millimetres of proptosis, limitation of ocular motility in all directions of gaze, but no signs of optic neuropathy. Preoperative computed tomography and magnetic resonance imaging of the orbits was performed to localise the abscess and to facilitate surgical planning.

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Introduction: Neuroendocrine orbital tumors are rare occurrences. They are poorly characterized histologically and a spectrum of different cell types exists. This short case series studies the various tumor morphologies as well as the patients' clinical profiles.

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Introduction: This study reviews the differences in demographics and surgical outcomes between ectropion in Asian and non-Asian eyes.

Materials And Methods: Medical records of surgically corrected ectropion cases from January 2002 to December 2006 were reviewed. Preand postoperative lid-globe apposition was graded: grade 0 with normal lid-globe apposition, grade 1 with punctal ectropion, grade 2 with partial lid eversion and scleral show, grade 3 with conjunctival hyperemia and thickening and grade 4 as for grade 3 with exposure keratitis.

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Periorbital necrotizing fasciitis is a potentially fatal disease, and early surgical debridement has been advocated to minimize the risk of blindness and mortality. The authors report a case of an 18-year-old man who presented with isolated, unilateral group A Streptococcus eyelid necrotizing fasciitis. The patient responded to intravenous antibiotics alone, and no surgical debridement was needed.

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We prospectively compared 120 patients who underwent either phacoemulsification or extracapsular cataract (ECCE) surgery to establish the incidence of postoperative ptosis between the two techniques. Of the 120 patients, 60 underwent ECCE (unpublished data 1989) and 60 had phacoemulsification. Data was collected prospectively on upper and lower margin reflex distance, upper lid skin crease and levator function, preoperatively and 6 weeks postoperatively.

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Introduction: Ophthalmologists differ in their threshold for surgical management in paediatric patients with orbital cellulitis. We studied the management choices and outcome of children admitted with this disorder.

Material And Methods: A retrospective review was performed on patients with orbital cellulitis admitted between January 2001 and December 2004 to a tertiary paediatric referral centre in Singapore.

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