Microwave Cataractogenesis: A Critical Review of the Literature
William C. Milroy, Sol M. Michaelson · 1972
Early research established microwave radiation's ability to cause cataracts, highlighting the eye's unique vulnerability to electromagnetic heating effects.
Plain English Summary
This 1972 critical review examined the scientific literature on microwave radiation's ability to cause cataracts (lens opacities in the eyes). The research analyzed existing studies on how microwave exposure affects the eye's lens, a tissue particularly vulnerable to heat damage from electromagnetic radiation.
Why This Matters
This early review represents foundational research into one of the most well-established biological effects of microwave radiation. The eye's lens lacks blood vessels to dissipate heat, making it uniquely vulnerable to microwave-induced thermal damage. What makes this particularly relevant today is that modern wireless devices operate in similar frequency ranges to those studied in early cataract research. While your smartphone operates at much lower power levels than industrial microwave sources, the proximity to your head during calls creates localized heating patterns that warrant attention. The science demonstrates that microwave-induced cataracts were among the first recognized health effects of electromagnetic radiation, establishing important safety thresholds that inform current exposure guidelines.
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To review the presently available information on microwave cataractogenesis and to offer some hopefully constructive criticisms. If legislation is going to be enacted to protect the public from the hazards of microwave radiation, it is essential that those hazards be adequately understood.
The literature in each of these areas and the applicability of the information derived to human stan...
The data available on microwave cataractogenesis are of two types, animal experimentation and human ...
Presently available information on microwave cataractogenesis appears to raise more questions than it answers. Rational hazards evaluation and standards setting are to a great extent dependent on obtaining reliable answers to these questions. The answer to whether microwave radiation is cataractogenic appears to be yes, based on experimental evidence. A threshold exposure for cataract production appears to be around 100 mW/cm². The question of cumulative sub-threshold effects appears to be experimentally possible but not conclusively proven. The question of non-thermal effects remains the area of greatest controversy. The effectiveness of microwave radiation does vary with frequency, with the most effective frequencies being in the 1000-3000 MHz range. The question of whether microwave radiation exerts an aging effect on the eye needs further study. The present U.S. maximum permissible exposure is 10 mW/cm² based on the lens of the eye as the most sensitive organ.
Show BibTeX
@article{microwave_cataractogenesis_a_critical_review_of_the_literature_g3708,
author = {William C. Milroy and Sol M. Michaelson},
title = {Microwave Cataractogenesis: A Critical Review of the Literature},
year = {1972},
}