Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
ABSENCE OF OCULAR PATHOLOGY AFTER REPEATED EXPOSURE OF UNANESTHETIZED MONKEYS IN 9-3 GHZ MICROWAVES
No Effects Found
McAfee, R.D., Longacre, A. Jr., Bishop, R.R. et al. · 1979
1979 monkey study found no eye damage from 9.3 GHz microwave exposure, informing early safety standards.
Plain English Summary
Summary written for general audiences
This 1979 study examined whether repeated exposure to 9.3 GHz microwave radiation causes eye damage in monkeys. The research found no ocular pathology (eye damage) after repeated exposures, suggesting this specific frequency and exposure pattern did not harm primate eyes. This research contributed to understanding microwave safety limits for human exposure.
Cite This Study
McAfee, R.D., Longacre, A. Jr., Bishop, R.R. et al. (1979). ABSENCE OF OCULAR PATHOLOGY AFTER REPEATED EXPOSURE OF UNANESTHETIZED MONKEYS IN 9-3 GHZ MICROWAVES.
Show BibTeX
@article{absence_of_ocular_pathology_after_repeated_exposure_of_unanesthetized_monkeys_in_g5271,
author = {McAfee and R.D. and Longacre and A. Jr. and Bishop and R.R. et al.},
title = {ABSENCE OF OCULAR PATHOLOGY AFTER REPEATED EXPOSURE OF UNANESTHETIZED MONKEYS IN 9-3 GHZ MICROWAVES},
year = {1979},
}Quick Questions About This Study
No, the study found no ocular pathology (eye damage) in monkeys after repeated exposure to 9.3 GHz microwaves. This suggests this specific frequency and exposure pattern did not harm primate eye tissue.
Eyes are particularly vulnerable to microwave radiation because they have limited blood circulation to remove heat, and the lens has no blood supply at all to protect against thermal damage.
9.3 GHz is higher than most consumer devices. WiFi operates at 2.4-5 GHz, cell phones use 0.7-2.7 GHz, while 9.3 GHz is more typical of radar and specialized industrial applications.
This early primate research helped establish microwave safety standards still used today. Monkeys are considered good models for human microwave exposure because of similar physiology and eye structure.
No, the study specifically used unanesthetized monkeys. This was important because anesthesia could potentially alter how the animals' bodies responded to microwave radiation during exposure periods.