When should I wear glasses?
When should I wear glasses?
If vision is blurred, objects are blurred as before, you have had eye pain or headache while reading, sewing, or doing other activities, you may have vision problems. You should go see ophthalmologists and optometrists to detect eye and glasses.
But if you do not want to cut glasses to adjust the eye level You may choose to buy reading glasses at any eyeglass store. By choosing glasses suitable for their eyesight by holding the book approximately 14-16 inches from the body and then experimenting to see if they can see the text clearly and feel comfortable or not. Alternatively, you may consult an ophthalmologist for options such as contact lens wear and vision correction surgery.
However, if you have vision problems along with other symptoms such as eye irritation, black spots drifting around. Only partially see pictures Seeing flashes in the eyeballs, sudden pain or redness Should immediately see an ophthalmologist for treatment.
Materials used to make eyeglass lenses
Originally, the material used to make eyeglasses was glass lenses. But now I switched to plastic, which is lightweight, flexible, difficult to break and can protect against UV rays.In addition, the material used to make the lens has many other special features to choose from as appropriate for use as follows.
Plastic High Index (High-Index Plastic) is for people who are nearsighted or very long and needed glasses. Because this type of lens has a thin and light feature. Reduce the problem of thick lenses that they are uncomfortable when wearing them.
Rick’s photosphere (Aspheric) lens with a degree of curvature several levels. Therefore have a curved, flat surface and thinner than normal lenses Making more space in front of the lens
Polycarbonate (Polycarbonate) This lens is suitable for people who play sports and people who frequently break or break lenses because they are resistant to shocks and scratches.In addition, the lenses can also block UV rays.
Polarized (Polarized) feature helps reduce glare from reflective surfaces. This lens is suitable for sports and driving. But the lens may make the display less clearly visible on the car dashboard.
The photo-chromic (Photochromic) features color changing. And can block 100 percent of UV rays, the lenses will react to UV light. Making the lens turn darker when outdoors And will return to clear as it was in the shade Therefore do not need to wear sunglasses But the lens will not change color while in the car. This is because most of the car’s windshields already block UV rays.
