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Evaluation of possible microwave-induced lens changes in the United States Air Force.

Aviation, space, and environmental medicine · 1975 · No effect · Low evidence

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No effectLow evidencePaper 6121

In double-blind ophthalmologic exams of 477 microwave-exposed workers versus 340 unexposed controls, no significant difference was found in three lenticular findings equated with early cataract formation. The authors conclude the results do not support that m…

Study snapshot

PublicationAviation, space, and environmental medicine · 1975
Study typecohort
Reported directionNo effect
Evidence ratingLow

Abstract

An Air Force examination team performed ophthalmologic examinations on 817 subjects in a double blind fashion. The subjects included 477 workers in the microwave radiation field and 340 control subjects with no known history of occupational exposure to microwave radiation. The intent of the study was to determine if a significant difference existed between the two groups for the presence of three lenticular findings equated with early cataract formation. No significant difference was found. Thus, this study does not support the contention that microwave exposure in the military environment is causing human cataracts at levels permitted by U.S. Safety Standards.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typecohort
Effect directionno_effect
PopulationUnited States Air Force workers and controls
Sample size817
Exposuremicrowave
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

In double-blind ophthalmologic exams of 477 microwave-exposed workers versus 340 unexposed controls, no significant difference was found in three lenticular findings equated with early cataract formation. The authors conclude the results do not support that microwave exposure in the military environment is causing human cataracts at levels permitted by U.S. safety standards.

Outcomes measured

  • lenticular findings equated with early cataract formation
  • human cataracts
View raw extracted JSON
{
  "study_type": "cohort",
  "exposure": {
    "band": "microwave",
    "source": "occupational",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "United States Air Force workers and controls",
  "sample_size": 817,
  "outcomes": [
    "lenticular findings equated with early cataract formation",
    "human cataracts"
  ],
  "main_findings": "In double-blind ophthalmologic exams of 477 microwave-exposed workers versus 340 unexposed controls, no significant difference was found in three lenticular findings equated with early cataract formation. The authors conclude the results do not support that microwave exposure in the military environment is causing human cataracts at levels permitted by U.S. safety standards.",
  "effect_direction": "no_effect",
  "limitations": [],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "occupational exposure",
    "Air Force",
    "ophthalmologic examination",
    "lens changes",
    "cataract"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Compares microwave-exposed military workers with unexposed controls."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 1212147

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