Stephenie Tiew | University of Ulster (original) (raw)

Stephenie Tiew

Uploads

Papers by Stephenie Tiew

Research paper thumbnail of Development of an Automated Image Analysis Technique for Assessment of Macular Fluid Volume from High Resolution OCT Images of the Macula

Investigative Ophthalmology & Visual Science, 2011

Research paper thumbnail of Experience In Using The Vampire Retinal Analysis Tool To Assess Tortuosity In Patients Undergoing Bevacizumab (Avastin) Treatment For Wet Age-related Macular Degeneration (AMD)

Investigative Ophthalmology & Visual Science, 2011

Research paper thumbnail of Sliding scales just as slippery: we need local, real-time learning

Research paper thumbnail of A training model for practice of corneal suture tying

Research paper thumbnail of Anti-VEGF intervention in neovascular AMD: benefits and risks restated as natural frequencies

BMJ Open Ophthalmology, 2019

ObjectiveClear information is essential to properly determine preference in medical intervention.... more ObjectiveClear information is essential to properly determine preference in medical intervention. In neovascular age-related macular degeneration, patients need to understand the balance of risk and benefit of anti-vascular endothelial growth factor (VEGF) treatment. This balance is altered by the number of injections administered.MethodsNatural frequencies, displayed as pictographically as icon arrays, are used to show material outcomes from the MARINA and HARBOR (12 months) trials. We also calculated the number needed to treat (NNT) and number needed to harm (NNH).ResultsMARINA 24-month data show the absolute risk reduction is 37% and the NNT is 3; meaning for one patient to benefit three need to be treated.12 months’ HARBOR data show that compared with as-needed treatment, scheduled monthly injection treatment increases the number of patients achieving a better visual outcome. The number of patients suffering harm is also increased by the additional injections.ConclusionDisplayin...

Research paper thumbnail of Using an excel spreadsheet to convert Snellen visual acuity to LogMAR visual acuity

Research paper thumbnail of Use of a corneal impression membrane for the detection of Herpes Simplex Virus type-1

PurposeTo investigate the use of a corneal impression membrane (CIM) for the detection of Herpes ... more PurposeTo investigate the use of a corneal impression membrane (CIM) for the detection of Herpes Simplex Virus type 1 (HSV-1) in suspected Herpes Simplex Keratitis (HSK).Materials and MethodsIn the laboratory study, swabs and CIMs made from polytetrafluoroethylene were spiked with different concentrations of HSV-1. DNA was extracted and real time PCR undertaken using 2 sets of primers. In the clinical study consecutive patients presenting with suspected HSK were included. For each patient, samples were collected from corneal lesions with a swab and a CIM in random order. Clinical details were collected using a standardised clinical form and patients were categorized into probable, presumed and possible HSK.ResultsThere was no difference in the performance of both primer sets for all HSV-1 dilutions (p=0.83) or between a CIM and a swab (p=0.18). 110 patients were included. Seventy-three patients (66.4%) had probable, 20 patients (18.2%) presumed, and 17 patients (15.5%) possible HSV-...

Research paper thumbnail of Tattoo-associated panuveitis: A 10-year follow-up

European Journal of Ophthalmology, 2019

Introduction: There has been an increasing number of tattoo-related uveitis without evidence of s... more Introduction: There has been an increasing number of tattoo-related uveitis without evidence of systemic sarcoidosis. This finding may indicate a possible association of tattoos with uveitis. Case description: This report is a 10-year follow-up of a single case of tattoo-related uveitis with no proven systemic sarcoidosis. Conclusion: Literature review suggests possible pathogenesis and the patient’s management is discussed. This case highlights the importance of a good systemic history and physical examination, especially with regard to tattoos.

Research paper thumbnail of Candida: an unexpected cause of the acute abdomen

Research paper thumbnail of Building a safer foundation: the Lessons Learnt patient safety training programme

BMJ quality & safety, 2014

To develop, implement and evaluate a novel patient safety training programme for junior doctors a... more To develop, implement and evaluate a novel patient safety training programme for junior doctors across a Foundation School-'Lessons Learnt: Building a Safer Foundation'. Prospective preintervention /postintervention study across 16 Foundation Programmes in North West England, UK. 1169 participants including all Foundation Programme Directors, Administrators, Foundation trainees and senior faculty. Half-day stakeholder engagement event and faculty development through recruitment and training of local senior doctors. Foundation trainee-led monthly 60-min sessions integrated into compulsory Foundation teaching from January to July 2011 comprising case-based discussion and analysis of patient safety incidents encountered in practice, facilitated by trained faculty. Participants' satisfaction and Foundation trainees' patient safety knowledge, skills, attitudes and behavioural change. Participants reported high levels of satisfaction with 'Lessons…

Research paper thumbnail of A medic and beauty expert

BMJ, 2008

Shameela Islam-Zulfiqar is a far cry from a conventional final year medical student. She is also ... more Shameela Islam-Zulfiqar is a far cry from a conventional final year medical student. She is also a mother of four and founder of a bridal hair and make-up company. Stephenie Tiew finds out more

Research paper thumbnail of Development of an Automated Image Analysis Technique for Assessment of Macular Fluid Volume from High Resolution OCT Images of the Macula

Investigative Ophthalmology & Visual Science, 2011

Research paper thumbnail of Experience In Using The Vampire Retinal Analysis Tool To Assess Tortuosity In Patients Undergoing Bevacizumab (Avastin) Treatment For Wet Age-related Macular Degeneration (AMD)

Investigative Ophthalmology & Visual Science, 2011

Research paper thumbnail of Sliding scales just as slippery: we need local, real-time learning

Research paper thumbnail of A training model for practice of corneal suture tying

Research paper thumbnail of Anti-VEGF intervention in neovascular AMD: benefits and risks restated as natural frequencies

BMJ Open Ophthalmology, 2019

ObjectiveClear information is essential to properly determine preference in medical intervention.... more ObjectiveClear information is essential to properly determine preference in medical intervention. In neovascular age-related macular degeneration, patients need to understand the balance of risk and benefit of anti-vascular endothelial growth factor (VEGF) treatment. This balance is altered by the number of injections administered.MethodsNatural frequencies, displayed as pictographically as icon arrays, are used to show material outcomes from the MARINA and HARBOR (12 months) trials. We also calculated the number needed to treat (NNT) and number needed to harm (NNH).ResultsMARINA 24-month data show the absolute risk reduction is 37% and the NNT is 3; meaning for one patient to benefit three need to be treated.12 months’ HARBOR data show that compared with as-needed treatment, scheduled monthly injection treatment increases the number of patients achieving a better visual outcome. The number of patients suffering harm is also increased by the additional injections.ConclusionDisplayin...

Research paper thumbnail of Using an excel spreadsheet to convert Snellen visual acuity to LogMAR visual acuity

Research paper thumbnail of Use of a corneal impression membrane for the detection of Herpes Simplex Virus type-1

PurposeTo investigate the use of a corneal impression membrane (CIM) for the detection of Herpes ... more PurposeTo investigate the use of a corneal impression membrane (CIM) for the detection of Herpes Simplex Virus type 1 (HSV-1) in suspected Herpes Simplex Keratitis (HSK).Materials and MethodsIn the laboratory study, swabs and CIMs made from polytetrafluoroethylene were spiked with different concentrations of HSV-1. DNA was extracted and real time PCR undertaken using 2 sets of primers. In the clinical study consecutive patients presenting with suspected HSK were included. For each patient, samples were collected from corneal lesions with a swab and a CIM in random order. Clinical details were collected using a standardised clinical form and patients were categorized into probable, presumed and possible HSK.ResultsThere was no difference in the performance of both primer sets for all HSV-1 dilutions (p=0.83) or between a CIM and a swab (p=0.18). 110 patients were included. Seventy-three patients (66.4%) had probable, 20 patients (18.2%) presumed, and 17 patients (15.5%) possible HSV-...

Research paper thumbnail of Tattoo-associated panuveitis: A 10-year follow-up

European Journal of Ophthalmology, 2019

Introduction: There has been an increasing number of tattoo-related uveitis without evidence of s... more Introduction: There has been an increasing number of tattoo-related uveitis without evidence of systemic sarcoidosis. This finding may indicate a possible association of tattoos with uveitis. Case description: This report is a 10-year follow-up of a single case of tattoo-related uveitis with no proven systemic sarcoidosis. Conclusion: Literature review suggests possible pathogenesis and the patient’s management is discussed. This case highlights the importance of a good systemic history and physical examination, especially with regard to tattoos.

Research paper thumbnail of Candida: an unexpected cause of the acute abdomen

Research paper thumbnail of Building a safer foundation: the Lessons Learnt patient safety training programme

BMJ quality & safety, 2014

To develop, implement and evaluate a novel patient safety training programme for junior doctors a... more To develop, implement and evaluate a novel patient safety training programme for junior doctors across a Foundation School-'Lessons Learnt: Building a Safer Foundation'. Prospective preintervention /postintervention study across 16 Foundation Programmes in North West England, UK. 1169 participants including all Foundation Programme Directors, Administrators, Foundation trainees and senior faculty. Half-day stakeholder engagement event and faculty development through recruitment and training of local senior doctors. Foundation trainee-led monthly 60-min sessions integrated into compulsory Foundation teaching from January to July 2011 comprising case-based discussion and analysis of patient safety incidents encountered in practice, facilitated by trained faculty. Participants' satisfaction and Foundation trainees' patient safety knowledge, skills, attitudes and behavioural change. Participants reported high levels of satisfaction with 'Lessons…

Research paper thumbnail of A medic and beauty expert

BMJ, 2008

Shameela Islam-Zulfiqar is a far cry from a conventional final year medical student. She is also ... more Shameela Islam-Zulfiqar is a far cry from a conventional final year medical student. She is also a mother of four and founder of a bridal hair and make-up company. Stephenie Tiew finds out more

Log In