THRESHOLD REACTIVITY OF VARIOUS REGIONS OF THE HUMAN RETINA TO X- IRRADIATION

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Biophysics (U.S.S.R.)(English Translation)

OSTI ID:4040626

Gurtovoi, G K; Burdianskaia, Ye O

When x radiation is delivered to the whole retina of the normal eye the substrate in which the primary impulse develops, leading to sensation of light with the threshold dose, is the peripheral rod and not the central cone apparatus. In this case the threshold is a dose of about 1 mr. The region of the retina of radius 10 to 30 deg has a higher threshold than the whole normal retina. For this region the threshold dose is of the order of 150 mr. For marked degrees of exclusion of both rod and cone apparatuses a dose of 2 r does not produce a sensation of light, i.e., is subthreshold. The findings may be utilized in clinical investigations of the retina in the case of opaque optical media. (auth)

• Research Organization: Inst. of Biological Physics, Academy of Science, Moscow; Helmholz Inst. for Diseases of the Eyes, Moscow
• NSA Number: NSA-15-015431
• OSTI ID: 4040626
• Journal Information: Biophysics (U.S.S.R.)(English Translation), Journal Name: Biophysics (U.S.S.R.)(English Translation) Vol. Vol: 5: No. 4
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BIOLOGY AND MEDICINE
CYTOLOGY
EYES
LIGHT
RADIATION DOSES
X RADIATION