IONIZING RADIATION ACTION ON THE CORNEA
The sensitivity of the normal cornea which has been subjected to a single dose of x radiation was studied in healthy rabbits. Results show thnt the early reaction of the cornea to penetrating radiation is a change in its tactile sensitivity. A definite latent period is evident, and this period is shortened from 4 to 3 weeks as the radiation dose is increased from 450 to 600 r. Irradiation by sublethal doses further shorten the latent period, therefore, a decrease in sensitivity depends on the dose. The greater the dose, the sooner the decrease in sensitivity occurs; the smaller the dose, the sooner does restoration set in. Not all the points on the surface of the cornea are identical in sensitivity. The pupil area is more sensitive than the periphery, and the points along the vertical meridian are less sensitive than the points along the horizontal. Changes in the indexes of tactile and pain sensitivity of the cornea indicate a certain degree of corneal cell perception of radiation action. The action of ionizing radiation on the cornea with its inherent sensitivity indicates a special reactivity which is brought about by the nervous system, and by biochemical and metabolic processes. (TCO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-014150
- OSTI ID:
- 4063412
- Journal Information:
- Vestnik Oftal'mol., Vol. Vol: No. 5; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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