Eyeglass lenses have a variety of types that can be tailored to your needs. It is important to choose the right type of eyeglass lens, so you feel comfortable when using it.
For those of you who have vision problems (especially eye refraction problems), such as nearsightedness, farsightedness, or a combination of both, the use of glasses is very important. When experiencing this disorder the selection of the right type of glasses and as needed will help your eyes more comfortable to see and move.
Types of Glasses Lenses Based on the Material
Based on the material, the lens of the glasses can be divided into several types, namely:
1. Glass
Eyeglass lenses made of glass are not easily scratched. In addition, glass material has excellent light-emitting properties.
But the drawbacks, glass lenses tend to be heavier and can only be used for certain frames
2. Polycarbonate
Polycarbonate lenses are eyeglass lenses that are thinner and lighter than glass. In addition, this type has other advantages, such as impact resistance and provide protection against UV rays.
This lens is usually recommended for people who often do sports or outdoor activities (risk) that are at risk of causing sunglasses to break.
3. Trivex
Trivex is a lens that has almost the same safety standards as polycarbonate lenses. The advantage of this lens is its ability to bend light better than polycarbonate lenses.
4. High index
One of the advantages of high index lenses is that they are thinner and lighter than polycarbonate and trivex lenses. This type of lens is recommended for people who need high visual correction.
5. Photochromic
This type of lens can be made of glass or plastic. The advantage of this lens is its ability to change color from clear to dark when exposed to sunlight, so you don't need to change glasses when you are indoors or in the sun.
Various Types of Glasses Lenses Based On Eye Disease
If you have a vision problem, the doctor will prescribe a type of lens to correct it. For example, the minus lens for nearsightedness, or the plus lens for farsightedness.
But if you have more than one visual impairment, such as presbyopia which usually cannot see long distances and close distances, then your doctor can prescribe multifocal lenses.
This multifocal lens also has several types, namely:
Bifocal lens
A bifocal lens is a type of eyeglass lens that is often recommended to correct visual impairment due to age. This lens has two focus points, namely at the top of the lens to clarify distance vision, and at the bottom of the lens to clarify close-up vision.
Trifocal lens
This type of lens has three different focus points, for example, the upper part functions for long distance viewing, the lower part for close distance viewing, and the middle section for medium distance viewing.
In addition to knowing the types of eyeglass lenses, you also need to understand how to care for glasses to always be clean and comfortable when used, namely by storing glasses in a clean and dry place, and cleaning glasses regularly using special cleaning fluid glasses and soft cloth.
Well, if you feel your vision starts to blur both when you see far or near, do an examination with an eye doctor, so that you can be given a choice of glasses that suit your condition. Likewise, if the glasses you normally use have started to feel uncomfortable.
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