The Eyeglasses Wearing Must Be Worn Stably

Choosing cheap eyeglasses near me lenses for high myopia is much simpler than choosing frames. A high budget doesn't need to be considered, because for high myopia, no matter how it is matched, it is always thick.

 All we can do is make the thickness "not obvious". Lens design and film layer can be discussed and selected based on actual situations after communication.

The key points to know for high myopia are that discount prescription glasses must be very suitable and undergo regular optometry checks! Glasses must be regularly maintained to prevent frame deformation, sliding, wear, and incorrect wearing posture without self-awareness! This is often overlooked, but it greatly harms visual health.

Finally, it should be emphasized that it must be worn stably! Must be worn stably! Must be worn stably! It is very important to regularly check if the glasses need to be adjusted.

What is dispersion? Visible light is divided into seven colors, and as long as it is refracted through the medium, it will experience dispersion. Excessive dispersion is manifested by unclear contours around the object and the feeling of a small rainbow.

However, when light passes through different media, its dispersion index varies, which is why we have to mention the term Abbe number (also known as dispersion coefficient). A lens with different refractive indices has different dispersion coefficients. The larger the Abbe number, the smaller the dispersion, and the clearer and more realistic the viewing experience after wearing glasses. The human eye is like a refractive medium.

When choosing lenses, try to choose ones with a higher Abbe number. However, there is an irreconcilable contradiction between the Abbe number and the refractive index. Often, the larger the refractive index, the thinner the lens will be, but the Abbe number will be lower.