Types of Prescription Glasses
Types of lenses for glasses
Single-vision prescription lenses are used to correct distance vision, near vision and astigmatism. They include the same amount of vision correction power. Full-rim glasses are the most commonly used glasses for single-vision reading glasses, also semi-rimless glasses available. They just “sit” at the end of your nose, narrow and lightweight, which serve your multi purposes for viewing at close and distant range.
Bifocals contain two prescriptions in the same lens, which may correct near vision (12-18 inches) and distance vision (up to 10 feet and above). The glasses lens is divided into two parts. The upper section corrects for far vision and the lower section corrects for near vision. You can see the horizontal line on the section of the lens, which is the boundary between myopia and hyperopia prescriptions.
Trifocals contain three different prescriptions in the same lens. The top Rx section corrects for distance vision, the middle section corrects for medium vision (18 to 24 inches), and the bottom corrects for near vision. Like bifocals, you can clearly see the boundaries of prescriptions on the lens.
Progressive comes with multifocal lens with segments providing at least three powers, including near vision, medium vision and far vision. Different from trifocals, there is no obvious boundary between prescriptions, allowing seamless and uninterrupted vision transition for the wearer.
Computer GlassesThe lenses of computer glasses are designed to cope with eye fatigue caused by computer screens. Most people sit at a distance of 20-26 inches from the computer screen. Computer glasses are equipped with colored lenses to filter out potentially harmful blue light emitted by electronic devices.
Choose the best lens for your glasses, but you need to choose the frame first. We boast many types of frames for you to select right glasses for your face shape , which will meet all your needs with metal frame, TR90 frame, titanium frame, square frame, round frame, cat- eye frame and so on.