Visual photography assistant

Will pull ... too strong light can still cause harm. ...

Many people know that ultraviolet rays can harm eyes. In fact, ultraviolet and infrared rays are usually absorbed by the cornea and lens, and generally do not touch the retina, so they are not the "number one killer" of the eyes. Among visible light, there is a kind of high-energy visible light-blue light, which will pass through the cornea and lens and touch the retina, causing immeasurable damage to the eyes. Among them, the flash of the camera, the light emitted by Yuba and the sunlight will have blue light.

Experts point out that blue light will accelerate the oxidation of cells in macular area of retina, and overexposure will even damage visual cells. If the macular area is exposed to blue light for a long time, it will increase the risk of macular degeneration when the eyes are old, and may even cause permanent damage to vision.

The light from the camera flash is very strong. Before taking pictures, the capacitor in the battery has stored a lot of electricity. At the moment of taking pictures, a powerful current passes through the flash, and the flash can emit strong light. Very irritating to the eyes, be careful not to get too close to the eyes.

When the flashlight flashes, it will cause a temporary "blind spot" to the human eye, that is, it will cause temporary damage to the underlying visual cells and visual nerves of the human eye. Generally, this kind of injury can be recovered in a minute or two, and it will not cause much adverse consequences. However, if the intensity of flash is large or the time is long, the degree of damage will increase, and in severe cases, irreparable losses may be caused. In addition, if it is often stimulated by flash, the functions of visual cells and visual nerves of human eyes will decline, which will affect the vision or visual function of human eyes and cause other eye-related diseases.

I hope these are helpful to you.