# WEB-022 — Frequency-dependent corneal injury at 40, 75 and 95 GHz

Why this matters
Frequency-specific injury measurements help define what an experiment actually establishes. This work follows the course of corneal damage and recovery at three millimetre-wave frequencies.

Id: WEB-022

Author: Kojima et al.

Full Authors: Masami Kojima; Yukihisa Suzuki; Kensuke Sasaki; Masao Taki; Kanako Wake; Soichi Watanabe; Maya Mizuno; Takafumi Tasaki; Hiroshi Sasaki

Year: 2018

Title: Ocular Effects of Exposure to 40, 75, and 95 GHz Millimeter Waves

Journal: Journal of Infrared, Millimeter, and Terahertz Waves

Citation: Masami Kojima; Yukihisa Suzuki; Kensuke Sasaki; Masao Taki; Kanako Wake; Soichi Watanabe; Maya Mizuno; Takafumi Tasaki; Hiroshi Sasaki. Ocular Effects of Exposure to 40, 75, and 95 GHz Millimeter Waves. Journal of Infrared, Millimeter, and Terahertz Waves. 2018. doi:10.1007/s10762-018-0497-z.

Doi: 10.1007/s10762-018-0497-z

Topic: Ocular effects and corneal injury; Automotive-radar frequency research

Verification Group: Original text reviewed

Record Role: Original text reviewed

Featured: False

Exposure: 40, 75 or 95 GHz continuous waves; focused local rabbit-eye exposures, 6 min; high-power thermal threshold regime.

Design: Pigmented rabbit eyes; dose-response and clinical follow-up of epithelial/stromal injury.

Finding: Reversible corneal injury occurred; corrected 50% injury-threshold estimates were 206.0, 142.8 and 145.6 mW/cm² at 40, 75 and 95 GHz respectively.

Statistics: See reported finding and original tables; effect sizes not independently recalculated.

Boundary: 2019 correction replaces Table 4; corrected values used here. 75 GHz is near the automotive band, not a test of automotive radar signals. Ocular conditions largely normalised within days.

Related: Same Japanese ocular programme as WEB-021; publications are not independent research teams.

Protection Question: Which exposure conditions and biological models reproduce this response, and what would establish its relevance to health?

Access: Original methods/results sections reviewed; no independent raw-data or supplement audit.

Locator: Original results/methods sections

Notice: Correction published 26 November 2019 (10.1007/s10762-019-00641-w) replaces Table 4. Corrected DD50 values are used in this record; correction PDF checked 21 October 2026.

Funding: Not established from retrieved original abstract.

Conflicts: Not established from retrieved original abstract.

Source Url: https://doi.org/10.1007/s10762-018-0497-z

Retrieval Links: https://doi.org/10.1007/s10762-018-0497-z | https://doi.org/10.1007/s10762-019-00641-w

Verification Date: 2026-10-21

Discovery Id: EML-AUTO-002

Technology Tracks: radar|millimetre

Technology Connection: Frequency-related ocular research; not an automotive FMCW radar exposure.

Publication Type: Original journal research

Study Setting: Animals

Browse Categories: cells