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Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Brain & Nervous System

No influence on selected parameters of human visual perception of 1970 MHz UMTS-like exposure.

No Effects Found

Schmid G, Sauter C, Stepansky R, Lobentanz IS, Zeitlhofer J · 2005

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3G mobile phone radiation at typical usage levels showed no measurable impact on basic visual perception in healthy adults.

Plain English Summary

Summary written for general audiences

Researchers exposed 58 healthy adults to UMTS (3G) mobile phone signals at levels similar to actual phone use and tested whether this affected their visual perception through four different eye tests. They found no measurable differences in visual performance between exposure to the radio frequency signals and fake (sham) exposure. This suggests that 3G mobile phone radiation at typical usage levels does not impair basic visual processing abilities.

Why This Matters

This study addresses an important question about whether mobile phone radiation affects the visual system, which is relevant since many cognitive studies use visual tasks to measure brain function. The exposure levels used (0.63 W/kg SAR) are within the range of actual mobile phone use, making the findings practically relevant. While the null results are reassuring for basic visual perception, this represents just one narrow aspect of potential neurological effects. The science demonstrates that EMF research requires examining multiple biological endpoints, as effects in one system don't necessarily predict outcomes in others. What this means for you is that while your visual perception likely isn't impaired by typical phone use, this single study doesn't address other potential neurological effects that have been documented in the broader research literature.

Exposure Details

SAR
0.63 , 0.37 W/kg
Source/Device
1970 MHz

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.63 , 0.37 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 4 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.97 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.97 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

In this study, possible effects of exposure to a generic 1.97 GHz UMTS-like signal on human visual perception were investigated in a double blinded, crossover study including 58 healthy volunteer subjects (29 male, 29 female), aged 29 +/- 5.1 years (mean +/- SD).

Each test subject underwent a battery of four different clinical tests three times (two different ex...

Statistical evaluation of the obtained test results revealed no statistically significant difference...

Cite This Study
Schmid G, Sauter C, Stepansky R, Lobentanz IS, Zeitlhofer J (2005). No influence on selected parameters of human visual perception of 1970 MHz UMTS-like exposure. Bioelectromagnetics. 26(4):243-250, 2005.
Show BibTeX
@article{g_2005_no_influence_on_selected_3370,
  author = {Schmid G and Sauter C and Stepansky R and Lobentanz IS and Zeitlhofer J},
  title = {No influence on selected parameters of human visual perception of 1970 MHz UMTS-like exposure.},
  year = {2005},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/15832335/},
}
PubMed: 15832335

Cited By (42 papers)

Quick Questions About This Study

A 2005 study found no evidence that 3G mobile phone radiation affects eyesight. Researchers tested 58 adults with four different vision tests during exposure to 1970 MHz signals and found no measurable differences in visual performance compared to fake exposure.
Research on 3G cell phone radiation shows no impact on vision problems. A controlled study exposing people to UMTS signals at typical phone usage levels found no statistically significant differences in visual perception abilities during real versus sham exposure.
Studies suggest UMTS radiation is not bad for your eyes. Research testing 58 healthy adults found no measurable effects on visual processing when exposed to 1970 MHz UMTS signals at levels similar to actual mobile phone use.
Mobile phone radiation appears to have no impact on basic vision functions. A 2005 study using four different eye tests found no statistically significant differences in visual perception when people were exposed to 3G phone signals versus fake exposure.
Research indicates minimal eye risks from 3G radiation exposure. A study testing visual perception in 58 adults during UMTS signal exposure found no measurable differences in eye performance compared to sham conditions, suggesting no immediate visual impairment.