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Your search keyword '"Michael G. Gressel"' showing total 3 results
Start Over Author "Michael G. Gressel" Journal american journal of ophthalmology
3 results on '"Michael G. Gressel"'

1. Five-year Follow-up of the Fluorouracil Filtering Surgery Study

Author

T. Farrell, P. McDonnell, G. Baerveldt, J. Irvine, B. Simashkevich, D. S. Minckler, B. Carney, Dale K. Heuer, C. Phelps, Joyce C. Schiffman, John Costin, Sohan Singh Hayreh, H. Kolder, M. Zgrabik, P. Craven, Michael G. Gressel, Wallace L.M. Alward, R. Green, and P. Schremp

Subjects
Ophthalmology, medicine.medical_specialty, Filtering surgery, business.industry, Fluorouracil, medicine, Five year follow up, business, Surgery, medicine.drug
Published
1996
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2. Toxic effect of fluorouracil on the rabbit retina

Author

Michael G. Gressel, Richard K. Parrish, and Dale K. Heuer

Subjects
Retina, Dose-Response Relationship, Drug, business.industry, Rabbit (nuclear engineering), Pharmacology, Ophthalmology, medicine.anatomical_structure, Fluorouracil, Medicine, Animals, Rabbits, business, medicine.drug
Published
1984

3. The influence of decreased retinal illumination on automated perimetric threshold measurements

Author

Dale K. Heuer, Douglas R. Anderson, Michael G. Gressel, and William J. Feuer

Subjects
Adult, Materials science, Visual acuity, genetic structures, Visual Acuity, Pupillary Constriction, Standard deviation, Retina, Perimeter, chemistry.chemical_compound, Random Allocation, Optics, medicine, Humans, Lighting, Decibel, business.industry, Retinal, Middle Aged, eye diseases, Ophthalmology, Meridian (perimetry, visual field), chemistry, Visual Field Tests, medicine.symptom, Visual Fields, business, Neutral density filter, Filtration
Abstract

Decreased retinal illumination (such as can be caused by pupillary constriction or light absorption by ocular media opacities) was simulated with a randomly ordered series of neutral density filters in front of the right eyes of five subjects with dilated pupils. Threshold measurements were performed on Humphrey and Octopus perimeters at 0, 5, 10, 15, 20, and 25 degrees nasally along the 180-degree meridian. A 0.6-log unit neutral density filter, which reduces retinal illumination the equivalent of halving the pupillary diameter, decreased the mean Humphrey thresholds by 1.1 +/- 0.8 decibels (dB) (mean +/- standard deviation) and the mean Octopus thresholds by 1.7 +/- 1.4 dB. Statistically significant (P less than or equal to .05, Dunnett's test) threshold depressions were observed at all eccentricities with a 1.5-log unit neutral density filter on the Humphrey perimeter (-4.5 +/- 0.7 dB) and with a 1.0-log unit neutral density filter on the Octopus perimeter (-3.5 +/- 1.0 dB).

Published
1989

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