The Visual Effect Is Better When Wearing Eyeglasses
Is there a relationship between refractive index and discountglasses clarity? Yes, as the refractive index increases, the clarity will decrease accordingly.
Here we need to mention a parameter called Abbe number, which is used to measure the clarity of lenses. The higher the Abbe number, the clearer the imaging. The lower the Abbe number, the more blurry the image.
In physics, the higher the Abbe number, the lower the refractive index. As is well known, the human eye is a complex refractive system, with the highest refractive index being the crystalline lens, which can be imagined as a built-in lens.
When choosing lenses with Abbe numbers similar to those of the human eye, the imaging quality is optimal, resulting in minimal visual fatigue and excellent contrast vision.
Most high Abbe number lenses have extremely low refractive index, making them a good choice for people with low refractive index (below 300 degrees).
But for people with a height of over 600 degrees, low refractive index lenses are very thick and can easily produce prism effects, affecting the visual impact.
For these people, the first choice is to choose lenses with a higher refractive index to reduce lens thickness and weight, but such a choice will also result in a certain degree of clarity loss.
Therefore, when choosing discountglasses lenses, if the degree is high, the lightweight effect can be prioritized, and lenses with higher refractive index can be selected to ensure imaging quality and clarity; If the degree is low, you can pair it with a slightly higher Abbe number, as the visual effect is better when looking at things.
The Abbe number is the key to human eye health, comfort, and clarity. When the Abbe number is too low, sensitive individuals can see the color sensation at the edges of objects.
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