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Toni B.Toni B.
Toni B.
22 giorni fa · ha pubblicato un post in Welcome to the Forum

Study about colour test in china

Hello everyone, a few days ago I discovered a study from a hospital in China where a process called photobiostimulation could improve Ishihara and D-15 test results. You can take a look and read it carefully.

It was published in a scientific journal and is completely true and proven. It started in 2024 and was repeated in 2025. Furthermore, the experiment is very simple: it involves watching a video on a mobile phone screen twice a day, every 12 hours, where the screen alternates between red and green every few seconds. The study itself includes the video in the attached materials/extras section S1, and it can be downloaded completely free of charge. The only remaining question is the light irradiance emitted by our mobile phones. They measured it, not because they needed an exact value, but simply to know the general range.


We could compare these results with a CA…


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Toni B.Toni B.
Toni B.
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Best country to apply

Hi, I was wondering if there’s a specific country to apply (I did the cad test in Australia and I failed) or if there’s a place where I can take another test before I apply for another exam in another country.


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Lewis Anderson
Lewis Anderson
13 ottobre 2025 · ha pubblicato un post in Welcome to the Forum

D15 Test

Hello,


Today I unfortunately failed the CAD test by getting a score of 10 for a duetan CVD. I also failed by getting a few wrong on the Lantern test, but I did pass the Farnsworth D-15 test, and I was wondering which authorities accept this method, since I failed the 2 methods before and will never pass the Ishihara test. I have been looking at Canada, but I am not sure if it will be accepted.

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Questo post è di un gruppo suggerito

Jordan Penning
14 agosto 2025 · ha aggiornato la descrizione del gruppo.

Welcome to the group! You can connect with other members, get updates, ask questions and share news.

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Jordan Penning
14 agosto 2025 · ha aggiunto un'immagine di copertina del gruppo.
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Welcome to our ECDAA General chat forum. A space for us to connect and share with each other. Start by posting your thoughts, sharing media, or creating a poll.

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Record Keeping

Hello folks,


Just wandering if anyone knows how long the CAA would keep records for colour testing? I failed the CAD back in 2013. Now that 11 years have passed, if I was to do the CAD again, would they average it with the results from 2013?


Thanks in advance.

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Excellent, my class 2 ran out in 2015. I can check, but I think the renewal date was in April. I’m hopeful that we will see change soon with the CAA.

Thanks for the reply.

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