ArticleBiomedical optics express2020
Vision with pulsed infrared light is mediated by nonlinear optical processes.
Article in Biomedical optics express, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 15 citations in OpenAlex.
- Stiles-Crawford effect in infrared two-photon vision.Biomedical optics express · 2026Article
- Color vision with a two-photon infrared RGB display.Biomedical optics express · 2025Article
- Seeing nonspectral colors with single wavelength stimulation in two-photon vision.Biomedical optics express · 2025Article
- Method for the determination of the luminance of two-photon vision stimuli.Biomedical optics express · 2024Article
- Laser pulse train parameters determine the brightness of a two-photon stimulus.Biomedical optics express · 2023Article
- From mouse to human: Accessing the biochemistry of vision in vivo by two-photon excitation.Progress in retinal and eye research · 2023Review
- Femtosecond Er-doped fiber laser source tunable from 872 to 1075 nm for two-photon vision studies in humans.Biomedical optics express · 2022Article
- The Impact of the Spectral Radiation Environment on the Maximum Absorption Wavelengths of Human Vision and Other Species.Life (Basel, Switzerland) · 2021Article
- Pupillary Light Reflex Induced by Two-Photon Vision.Investigative ophthalmology & visual science · 2021Article
- Two-photon microperimetry with picosecond pulses.Biomedical optics express · 2021Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
When the eye is exposed to pulsed infrared (IR) light, it is perceived as visible of the corresponding half wavelength. Previous studies have reported evidence that this is due to a non-linear two-photon absorption process. We have carried out a study which provides additional support to this nonlinear hypothesis. To this end, we have measured the spectral sensitivity at 2 different pulse repetition rates and have developed a theoretical model to account for the experimental observations. This model predicts a ratio between the minimum powers needed to detect the visual stimulus at the 2 pulse repetition rates employed of 0.45 if the stimulus were detected through a nonlinear effect and 1 if it were caused by a linear effect as in normal vision. The value experimentally found was 0.52 ± 0.07, which supports the hypothesis of a nonlinear origin of the two-photon vision phenomena.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.