Publications by authors named "Vivian W Ho"

Background: Interscalene brachial plexus block (ISB) provides excellent analgesia for arthroscopic shoulder surgeries but is associated with adverse effects including hemidiaphragmatic paresis. We aimed to compare the respiratory effects, forced vital capacity (FVC), and forced expiratory volume in 1 second (FEV1) between suprascapular nerve block (SSB) and ISB.

Methods: Sixty patients were recruited and randomized into ISB, anterior SSB, and posterior SSB groups.

View Article and Find Full Text PDF

Purpose: To report a case exhibiting drastic regression of a conjunctival nevus in a child.

Case Report: Spontaneous regression of conjunctival nevus is uncommon. We report the case of a nine-year-old Caucasian boy presenting a conjunctival-pigmented lesion situated at the plica semilunaris that underwent a significant reduction in size and color over a period of 15 months.

View Article and Find Full Text PDF

Purpose: To report two cases of spontaneous Descemet's membrane detachment (DMD) and dehiscence following penetrating keratoplasty (PK).

Case Reports: Spontaneous DMD or Descemet's membrane (DM) dehiscence following PK is a rare occurrence. Here, we describe two cases of such an occurrence following PK arising from the graft-host interface.

View Article and Find Full Text PDF

Purpose: The purpose was to investigate the survival of Descemet stripping automated endothelial keratoplasty (DSAEK) in eyes with an Ahmed glaucoma valve (AGV).

Methods: The study had a retrospective case-series of patients with an AGV in the anterior chamber undergoing a DSAEK. Included in the analysis were graft size, number of previous operations, post-operative glaucoma medications, post-operative intraocular pressure (IOP) control, graft size and donor factors (age, endothelial cell density, and post-mortem time).

View Article and Find Full Text PDF

Aim: To compare visual acuity and central macular thickness (CMT) changes in neovascular age related macular degeneration patients treated with either 6 weekly bevacizumab regimen or 4 weekly ranibizumab on an as required basis.

Methods: Patients made an informed choice between bevacizumab 1.25 mg or ranibizumab 0.

View Article and Find Full Text PDF

This case illustrates an overlooked metastatic lung carcinoma to the orbit. The rapid onset of symptoms and oedema mimicked a cellulitis. The patient was initially treated with a broad-spectrum topical and intravenous antibiotic therapy.

View Article and Find Full Text PDF

Ascorbate blocks agonist-induced, endothelium-derived hyperpolarizing factor (EDHF)-mediated vasodilatation in the bovine perfused ciliary artery and this is associated with a rise in perfusion pressure. We now report the origins of this ascorbate-induced rise in perfusion pressure. In segments of ciliary artery perfused at 2.

View Article and Find Full Text PDF