R B Keyser

  • Citations Per Year
Learn More
Polymerase chain reaction was used to test for the presence of human papillomavirus in conjunctival squamous cell carcinomas from three young Africans with aggressive disease. Two of these patients had the acquired immunodeficiency syndrome. Test results for human papillomavirus were negative [corrected] in all three cases.
Baseline cell body counts were performed on 32 human ciliary ganglia obtained during 16 consecutive autopsies. The mean age of the individuals was 53.4 yr, with a range of 17-97 yr. The cell body counts ranged from 1088-6835 cell bodies per ganglion. The mean cell body count was 2473 for specimens from the right side, 2316 for the specimens from the left(More)
With respect to the effect of surgical treatment upon the eye and the subsequent tumor behavior, 107 cases of ciliary body melanoma treated by iridocyclectomy were studied. Surgically induced complications are discussed; 6% of the patients operated on culminated in enucleation, and 42% of the patients had a final postoperative visual acuity of 20/40 or(More)
PURPOSE The purpose of the study is to describe an unusual case of infectious posterior scleritis after excision of a pterygium. METHODS The case history of a patient in whom anterior and posterior scleritis developed after excision of a pterygium is reviewed. Histopathologic findings are presented. RESULTS Pathologic examination results of a scleral(More)
We prospectively studied 100 patients with "definite" multiple sclerosis to determine which of three methods of stimulation most consistently had results that disclosed abnormalities in the visual evoked response when they were compared with those from normal controls. The three methods were diffuse flashes of light, intermittent reversing pattern, and(More)
Capacities of limestones of differing particle size to neutralize acid in vitro and to modify pH and utilization of feedstuffs in vivo were compared. Acid neutralization during pH-stat titrations was faster for fine than for coarse limestone, and mixed microbial cultures were more resistant to pH change when they contained fine calcium carbonate. Diets(More)
Two reagent and two feed grade magnesium oxides and reagent grade magnesium carbonate, sodium bicarbonate, and calcium carbonate were evaluated to ascertain their ability to neutralize acid in the rumen. Rumen fluid pH was increased in vitro, compared to the control, by antacid compounds, and their increased ranked: calcium carbonate less than feed grade(More)
Sixteen Holstein heifers and 20 calves were in trials on the effect of 10 and 15% crude protein and .3 and .9% calcium in the diet on fecal pH and consistency and on rate of passage of the liquid phase of digesta. Time of first appearance of polyethylene glycol was an indicator of rate of passage of the liquid phase in the lower tract of the animal.(More)
  • 1