Preeti Gupta

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PURPOSE We determined ocular and systemic factors influencing macular thickness measured by spectral-domain optical coherence tomography (SD-OCT) in a population-based sample of healthy eyes. METHODS We recruited 490 healthy Chinese adults, aged 40 to 80 years, from the Singapore Chinese Eye Study, a population-based survey. All participants underwent a(More)
Asthma and chronic obstructive pulmonary disease (COPD) are common disorders that are associated with increasing morbidity and mortality in older people. Bronchodilators are used widely in patients with these conditions, but even when used in inhaled form can have systemic as well as local effects. Older people experience more adverse drug effects because(More)
PURPOSE To determine the distribution of choroidal thickness (CT) and ocular factors associated with CT in high myopic eyes in comparison with emmetropic eyes of young healthy adults. METHODS A case-control study of 648 young, male subjects, including 520 high myopes and 128 emmetropes. Choroidal imaging was performed using enhanced depth imaging spectral(More)
PURPOSE To assess the visibility of the choroidal-scleral interface (CSI) from spectral domain optical coherence tomography (SD-OCT) and evaluate the ocular and systemic factors influencing the visibility of CSI in healthy eyes from population-based Malay sample. METHODS Participants were consecutively recruited from the population-based Singapore Malay(More)
This paper is proposed to reconsider the development of active power filter (APF) technologies that are routinely utilized to mitigate harmonics in utility power lines. This reconsider can furthermore be considered as a “tutorial-type paper” as it provides a holistic coverage of the APF technologies by omitting the tedious details, but without losing the(More)
Image fusion is a technique of combining source images i.e. multi-modal, multi-focus etc. to obtain a new more informative image. Multi-focus image fusion algorithm combines different images having different parts in focus. Applications of image fusion includes remote sensing, digital camera etc. This paper describes various multi-focus image fusion(More)
PURPOSE To assess iris surface features in Asian eyes and examine their associations with iris thickness measured by anterior segment optical coherence tomography (AS OCT). DESIGN Cross-sectional study. PARTICIPANTS We recruited 250 subjects from the Singapore Malay Eye Study. METHODS We obtained standardized slit-lamp photographs and developed a(More)
The choroid is a highly vascular structure; therefore, a wide range of systemic conditions can affect it. Conversely, choroid health may also give us insight into systemic health. With the emergence of optical coherence tomography, there has been a surge in the research on choroidal thickness and factors affecting it. Studies regarding the effect of(More)
Covalent modification of proteins by ubiquitin (Ub) and ubiquitin-like modifiers (Ubls) regulates many cellular functions in eukaryotes. These modifications are likely to be associated with pathogenesis, growth, and development of many protozoan parasites but molecular details about this pathway are unavailable for most protozoa. This study presents an(More)
BACKGROUND Parathyroid adenoma is the most common cause of primary hyperparathyroidism. Conventional surgical management includes bilateral neck exploration with removal of the adenoma(s) and biopsy of one of the other glands with visualization of all glands. It is associated with a risk of permanent hypoparathyroidism. Radioguided excision of parathyroid(More)