How To Use Blue Light Test Card !
0In this video, the presenter demonstrates how to use a Blue Light Test Card to assess the effectiveness of blue light blocking lenses. The steps are simple and designed for anyone looking to verify how well their lenses protect against blue light exposure.
To begin, place the Blue Light Test Card on a testing area. Then, shine a light on the card for about five seconds. You should observe that one part of the test card becomes darker, while the area that has been shielded by the lens does not change color. This indicates that the lens is effectively blocking blue light.
Next, remove the lens and shine the light on the test card again. If this area also turns darker, it confirms that the Blue Light Test Card is functioning correctly. By following these steps, you will have successfully tested the performance of your blue light blocking lenses using the Blue Light Test Card.
The video concludes with a reminder to like, share, and subscribe to the channel for more helpful content.
0:00 Introduction
0:02 Purpose of the video: how to use a Blue Light Test Card
0:06 Place the test card on a testing area
0:12 Shine a light on the test card for about 5 seconds
0:19 Observe changes: one part darkens while the other remains unchanged
0:25 Remove the lens and shine the light again
0:30 Confirm that the test card darkens without the lens
0:31 Successfully test your blue light blocking lenses
0:33 Conclusion and thank you message
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