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Biomedical subjects

J E Ross

Publications and source records attributed to J E Ross.

32 records · Page 2Linked to original sources
PubMed1984

Contrast sensitivity and visual disability in chronic simple glaucoma.

A battery of vision tests was used to quantify visual defect in a group of 50 patients with chronic simple glaucoma. The vision tests were near and distance visual acuity, visual fields, and contrast sensitivity to static and temporally modulated sinusoidal grating patterns. Of these, static contrast sensitivity function appears to be the most sensitive method of measuring visual defect in glaucoma patients. The visual disability experienced by the glaucoma patients was quantified by means of a questionnaire, and the relationship between perceived visual disability and visual defect was examined. It was found that results from a group of tests, near visual acuity, visual field, and contrast sensitivity measures, are the best predictors of the difficulty experienced by patients in performing visually dependent daily activities.

Activities of Daily Living↗
PubMed1983

Comparison of 2 interferometers for predicting visual acuity in patients with cataract.

Two clinical interferometers generated gratings directly on to the retina in young experienced observers and also in patients about to undergo cataract surgery. Eyes in the patients with no media opacities were used as controls. We agreed with the manufacturers' claims that gratings are seen on the retina independent of refractive state and that gratings can still be seen through most cataracts. However, we did not find that preoperative retinal visual acuity was of any value in predicting postoperative Snellen visual acuity. Reasons for this are discussed.

Aged↗
PubMed1975

Primary umbilical adenocarcinoma. A case report and review of literature.

A case of primary adenocarcinoma of the umbilicus is reported along with a review of the literature and discussion of possible origins of glandular tissue within this area. Multiple connections are present within the umbilicus (vascular, lymphatic, and embryologic) that may give this area access to metastatic lesions. The primary tumors may originate within the usual umbilical tissue (skin and soft tissue). Glands that are not normally present in the region of the umbilicus rarely develop malignant neoplasms. As postulated, glandular tissue may arise either as metaplasia from squamous epithelium or from glandular embryologic rests including omphalomesenteric duct remnants and urachal remnants.

Abdominal Neoplasms↗
PubMedDate not supplied

Prevalence of Legionella in pharyngeal secretions of patients with pharyngitis.

A serological investigation has suggested that Legionella pneumophila may be associated with sore throat in adults. In a study of 177 adults and children with acute pharyngitis, Legionella species were not isolated from pharyngeal cultures, which utilized selective and nonselective buffered charcoal-yeast extract media. Group A beta-hemolytic streptococci were isolated from 14 percent of the 177 symptomatic patients. Throat cultures from 88 asymptomatic control subjects were negative for Legionella and beta-hemolytic streptococci. Further studies are needed to determine if Legionella species are associated with acute pharyngitis.

Adult↗