8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Whole Body / General

Microwave Cataracts

Bioeffects Seen

Milton M. Zaret · 1973

Share:

Microwave radiation's ability to cause cataracts was documented in 1973, establishing eye damage as a recognized EMF health effect.

Plain English Summary

Summary written for general audiences

Dr. Milton Zaret's 1973 research examined microwave radiation's ability to cause cataracts in humans, focusing on thermal injury to the eye's lens from electromagnetic radiation exposure. This study contributed to understanding microwave radiation as an occupational health hazard, particularly for workers in radar and microwave communication industries.

Why This Matters

Zaret's work on microwave cataracts represents foundational research that helped establish EMF as a legitimate occupational health concern decades before cell phones became ubiquitous. The eye's lens is particularly vulnerable to microwave radiation because it lacks blood vessels to dissipate heat, making thermal damage more likely. What makes this research especially relevant today is that modern devices like WiFi routers, cell phones, and microwave ovens all emit similar microwave frequencies. While occupational exposures in 1973 were likely much higher than typical consumer device exposure, the basic biological mechanism remains the same. The reality is that your eyes are being exposed to microwave radiation daily from multiple sources, and the lens tissue that concerned researchers five decades ago hasn't evolved any new protective mechanisms.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Milton M. Zaret (1973). Microwave Cataracts.
Show BibTeX
@article{microwave_cataracts_g6734,
  author = {Milton M. Zaret},
  title = {Microwave Cataracts},
  year = {1973},
  
  
}

Quick Questions About This Study

The eye's lens lacks blood vessels to carry away heat generated by microwave absorption. This makes the lens particularly susceptible to thermal damage from electromagnetic radiation, as heat builds up without natural cooling mechanisms.
Workers in radar installations, microwave communication facilities, and industrial heating operations faced the highest exposures. These occupational settings involved much stronger microwave fields than consumer devices produce today.
Microwave radiation heats the eye's lens tissue through electromagnetic absorption. When temperatures rise sufficiently, proteins in the lens begin to coagulate and cloud, creating the opacity characteristic of cataracts.
Current consumer devices typically produce much lower exposures than the industrial sources studied in 1973. However, the basic biological vulnerability remains, and cumulative effects from multiple daily sources aren't fully understood.
Zaret's work provided early scientific evidence that microwave radiation could cause specific, measurable biological harm. This helped establish EMF health effects as legitimate medical concerns worthy of occupational safety regulations.