Publications by authors named "Johnny C Y Chan"

Purpose: To compare the chronic ocular manifestations in Stevens-Johnson syndrome and toxic epidermal necrolysis patients from a 15-year cohort.

Methods: All SJS and TEN patients admitted to our burn intensive care unit between 1999 and 2014 were invited for assessment. Slit-lamp examination was performed, and ocular condition was graded according to the Sotozono scoring System, which depended on the extent of cornea, conjunctiva and lid involvement.

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Background: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but life-threatening conditions that initially affect the skin and mucous membranes. The aim of this study was to compare the acute ocular manifestations between SJS and TEN.

Methods: The initial presenting ophthalmic records of patients with either SJS (<30% body surface area involvement) or TEN (> = 30% involvement), who were treated at one tertiary burn center in Hong Kong between 1999 and 2014, were retrospectively analyzed and compared.

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Purpose: Drug-induced agranulocytosis is a rare but life-threatening adverse drug reaction. Its epidemiology in Chinese is largely unknown. This study aimed to estimate the incidence, mortality, and risk of the drugs associated with agranulocytosis in Hong Kong Chinese.

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Background And Objective: Several studies have been published on the first generation non-thermal focused ultrasound with an average improvement of 0-3.95 cm reported. We aim to investigate the efficacy of the second-generation non-thermal focused ultrasound device with a combined radiofrequency hand piece.

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Background And Objectives: High-intensity focused ultrasound (HIFU) is a noninvasive technology for body contouring. HIFU is focused within the subcutaneous adipose tissue, causing coagulative necrosis and cell death. The objective of this study is to evaluate the effectiveness of a HIFU device for sculpting of the abdomen.

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Objective: To analyse the association between body mass index (BMI) and breast cancer risk among Chinese women in Hong Kong.

Methods: We conducted a population-based case control study of breast cancer in June 2002. Standardized questionnaires concerning BMI and other anthropometric data were completed by patients at the Queen Mary Hospital (QMH).

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