- Full text PDF available (0)
The aim of this study was to determine the axis of orientation of residual astigmatism in a sample of human eyes applying the principle of astigmatic decomposition. Calculations were carried out on keratoscopic and refractive data collected from the right and left eyes of 70 subjects (37 male and 33 female students) of mixed race (including 25 Asians and 43… (More)
A method is described for measuring internal ocular surface (posterior cornea, anterior and posterior crystalline lens) astigmatism. This involves the use of videokeratography, A-scan ultrasonography, and autorefractometry along with multi-meridional phakometric measurements of Purkinje images I(anterior corneal surface) II(posterior corneal surface) and… (More)
PURPOSE A computing scheme is described which allows determination of the astigmatic contribution of ocular surface effectivity towards residual astigmatism. METHODS This involves paraxial raytracing through astigmatic surfaces at random axes and applies the principle of astigmatic decomposition. Calculations are shown for averaged data from 66 normal… (More)
The monoclonal antibodies 2H4 and 4B4 allow CD4+ and CD8+ T lymphocytes to be subdivided into CD45R+ and CDW29+ functional subpopulations. The CD4+ CD45R+ lymphocytes are designated as suppressor/inducer and CD4+ CDW29+ as helper/inducer subsets. Peripheral blood lymphocytes from 19 patients with Down's syndrome and 19 age- and sex-matched normal controls… (More)
A clinical trial was performed on 20 optometry students in order to evaluate the suitability of the SUN SK-2000 (SUN contact lens company, Japan) computer-assisted videokeratoscope for use in clinical practice. Suitability was assessed by observing three factors: the accuracy, repeatability and agreement for central mean corneal power (MCP) with a… (More)
We studied two patients with hypogammaglobulinaemia, three with selective IgA deficiency, and four with selective extreme IgM deficiency for T-cell abnormalities in the circulating blood. Most patients had altered CD4+ helper/inducer and CD8+ suppressor/cytotoxic T-cell subsets, and an elevated percentage of HLA-DR+ and interleukin 2 (IL-2) receptor+… (More)
Three Saudi children with Down's syndrome were found to have anterior diaphragmatic hernias. They all needed surgical correction. In Down's syndrome, besides congenital heart disease and recurrent chest infection, a diaphragmatic hernia should be looked for as a possible cause of respiratory distress and chest deformity.
A 12-year-old Saudi boy with falciparum malaria developed profound thrombocytopenia with associated significant bleeding. Immunoglobulin was used to treat this case.
INTRODUCTION Hemolytic-Uremic Syndrome (HUS) is a worldwide disease and a common cause of acute renal failure in childhood. Recently the number of cases in our area seems to be increasing. AIM The objective of this study was to look at epidemiology, clinical course and complications of hemolytic-uremic syndrome in the Southern region of Saudi Arabia. … (More)