RF Safe

On the effects of glasses on the SAR in human head resulting from wireless eyewear devices at phone call stat

2018 · Harm · Low evidence

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HarmLow evidencePaper 2040

Calculated results indicate that wearing glasses alters the distribution and magnitude of SAR in the head, with maximal SAR in ocular tissues reported as up to 6 times higher with glasses than without. The maximal SAR was reported as sensitive to glasses size…

Study snapshot

Publicationmanual · 2018
Study typeengineering
Reported directionHarm
Evidence ratingLow

Abstract

On the effects of glasses on the SAR in human head resulting from wireless eyewear devices at phone call stat Lan JQ, Liang X, Hong T, Du GH. On the effects of glasses on the SAR in human head resulting from wireless eyewear devices at phone call state. Progress in Biophysics and Molecular Biology. 136:29-36. Aug 2018. Abstract This paper evaluates the effects of glasses on the specific absorption rates (SAR) in the human head resulting from wireless eyewear device at phone call state. We mainly concentrate on the SAR in the eyes since their sensitivity to electromagnetic fields (EMF). We find wearing glasses obviously alters the distribution and magnitude of the SAR. The maximal SAR in the ocular tissues with glasses is even 6 times more than that without glasses. Wearing glasses also induce the new hotspot in the eyes which may cause the biggest SAR increment in the ocular tissues. Moreover, calculated results indicate that the maximal SAR is sensitive to the size of glasses and radiation frequency. Because of this, we believe wearing glasses may possibly increase the risk of health hazard to eyes of wireless eyewear device user. These calculated results could be a valuable reference for the glasses designer to reduce the SAR in the eyes. sciencedirect.com

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 typeengineering
Effect directionharm
Populationhuman head (modeled)
Sample sizeNot supplied
ExposureNot supplied
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Calculated results indicate that wearing glasses alters the distribution and magnitude of SAR in the head, with maximal SAR in ocular tissues reported as up to 6 times higher with glasses than without. The maximal SAR was reported as sensitive to glasses size and radiation frequency, and glasses could induce a new hotspot in the eyes.

Outcomes measured

  • Specific absorption rate (SAR) in human head
  • SAR in ocular tissues/eyes
  • SAR distribution and hotspots
  • Effect of wearing glasses on SAR magnitude

Limitations

  • Appears to be a computational/calculated evaluation; no experimental or clinical outcomes reported in the abstract
  • Frequency values, exposure levels, and modeling details are not provided in the abstract
  • Health risk is discussed as a possibility rather than measured outcomes
View raw extracted JSON
{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "wireless eyewear device (phone call state)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "human head (modeled)",
  "sample_size": null,
  "outcomes": [
    "Specific absorption rate (SAR) in human head",
    "SAR in ocular tissues/eyes",
    "SAR distribution and hotspots",
    "Effect of wearing glasses on SAR magnitude"
  ],
  "main_findings": "Calculated results indicate that wearing glasses alters the distribution and magnitude of SAR in the head, with maximal SAR in ocular tissues reported as up to 6 times higher with glasses than without. The maximal SAR was reported as sensitive to glasses size and radiation frequency, and glasses could induce a new hotspot in the eyes.",
  "effect_direction": "harm",
  "limitations": [
    "Appears to be a computational/calculated evaluation; no experimental or clinical outcomes reported in the abstract",
    "Frequency values, exposure levels, and modeling details are not provided in the abstract",
    "Health risk is discussed as a possibility rather than measured outcomes"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "SAR",
    "specific absorption rate",
    "wireless eyewear",
    "glasses",
    "ocular tissues",
    "eyes",
    "hotspot",
    "radiation frequency",
    "phone call state",
    "EMF"
  ],
  "suggested_hubs": [
    {
      "slug": "rf-dosimetry",
      "weight": 0.9,
      "reason": "Focuses on SAR calculations/dosimetry in the head/eyes for a wireless device."
    },
    {
      "slug": "wearables",
      "weight": 0.75,
      "reason": "Examines exposure from a wireless eyewear (wearable) device."
    }
  ]
}
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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: Not supplied

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