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EXPERIMENTAL LENTICULAR OPACITIES PRODUCED BY MICROWAVE IRRADIATIONS

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A. W. RICHARDSON, T. D. DUANE, H. M. HINES · 1948

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This 1948 study was among the first to demonstrate that microwave radiation could potentially cause cataracts in eyes.

Plain English Summary

Summary written for general audiences

This 1948 study explored whether microwave radiation could cause cataracts in eyes, using a new 12.25 cm wavelength microwave generator. The research built on earlier work showing that various forms of radiation could damage the lens of the eye. This was among the first investigations into microwave radiation's potential to cause eye damage.

Why This Matters

This pioneering 1948 research represents one of the earliest investigations into microwave radiation's capacity to damage human tissue, specifically the delicate lens of the eye. What makes this study particularly significant is its timing - it emerged just as microwave technology was transitioning from military radar applications to civilian and medical uses. The researchers were exploring uncharted territory, investigating whether the newly available 12.25 cm microwaves could replicate the cataract-forming effects already documented with infrared, ultraviolet, and X-ray radiation.

The implications extend far beyond the laboratory. Today's microwave ovens operate at 12.24 cm wavelengths - nearly identical to what these researchers used in 1948. While your kitchen microwave is shielded and operates at much higher power levels, this early research established that microwave frequencies possess the fundamental capacity to alter biological tissue. The study's focus on temperature effects in eye tissue also foreshadowed decades of research into thermal mechanisms of microwave damage, research that continues to inform safety standards for everything from cell phones to Wi-Fi networks.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
A. W. RICHARDSON, T. D. DUANE, H. M. HINES (1948). EXPERIMENTAL LENTICULAR OPACITIES PRODUCED BY MICROWAVE IRRADIATIONS.
Show BibTeX
@article{experimental_lenticular_opacities_produced_by_microwave_irradiations_g4826,
  author = {A. W. RICHARDSON and T. D. DUANE and H. M. HINES},
  title = {EXPERIMENTAL LENTICULAR OPACITIES PRODUCED BY MICROWAVE IRRADIATIONS},
  year = {1948},
  
  
}

Quick Questions About This Study

The researchers used 12.25 cm wavelength microwaves generated by a new Raytheon device. This wavelength is nearly identical to modern microwave ovens, which operate at 12.24 cm wavelengths.
This was among the first studies to investigate whether microwave radiation could cause cataracts, expanding beyond previous research limited to infrared, ultraviolet, and X-ray radiation effects on eyes.
The study referenced earlier work by Moncreff and colleagues who measured temperature rises of 6.54 and 6.98 degrees Celsius in different parts of dogs' eyes during diathermy treatment.
The research was motivated by the medical use of short wave diathermy for treating sinus disorders, which had proven safe when used as prescribed for therapeutic purposes.
Raytheon produced the new microwave generator that propagated 12.25 cm waves, offering what researchers called 'a new band of the electromagnetic spectrum' for medical therapy applications.