I also agree to the Privacy Policy. Toggle Nav. My Account Sign In. My Cart. Free delivery. Find a Store. Book Eye Exam. Language For Eyes. What are the different types of lenses for glasses? High-Index Lenses High-index lenses are your best option if you have a high prescription. Plastic Lenses When looking at different types of optical lenses, plastic lenses are the most common.
Polycarbonate Lenses Another type of optical lens is polycarbonate. Summary: What are the most common types of optical lenses? Plastic: These lenses are the most common and inexpensive option for those with moderate prescriptions. Eyeglasses are the most common form of eyewear used to correct or improve many types of vision problems.
They consist of a frame that holds 2 pieces of glass or plastic, which have been ground into lenses to correct refractive errors. Refractive errors can include trouble seeing far away nearsightedness or myopia and trouble seeing close up farsightedness or hyperopia.
They can also include blurring due to an irregularly shaped cornea astigmatism. Eyeglasses work by adding or subtracting focusing power to the eye's cornea and lens. Contact lenses. Contact lenses are worn directly on the cornea.
Like eyeglasses, contact lenses correct refractive errors. They do this by adding or subtracting focusing power to the cornea and lens. The lens power of eyeglasses is measured in diopters. This measurement reflects the amount of power needed to focus images directly onto the retina.
When looking at an eyeglass prescription, you will see the following abbreviations:. OD Oculus dexterous. This means the right eye sometimes the abbreviation RE is used.
OS Oculus sinister. This means the left eye sometimes the abbreviation LE is used. This number measurement reflects how much nearsightedness or farsightedness. This number measurement shows the amount of astigmatism an irregularly shaped cornea which causes blurring. This number measurement describes the direction of the astigmatism in degrees. Bifocal is additional power in the lens. It has an additional measurement listed on the prescription as "add" to show the strength of the lens.
The type of lenses used in eyeglasses depends on the type of vision problem, and may include:. Concave lenses. These are thinnest in the center. Find an eyecare professional. Enter your ZIP code below to find a location near you. And don't forget to ask about telehealth virtual visits! Identified Harmful Blue Light through in vitro experiment on swine retinal cells, where the most toxic wavelengths are high energy visible light falling between nm on the light spectrum blue-violet light.
Types of Eyeglass Lenses. Materials matter With ordinary plastic lenses, a strong prescription can result in a thicker lens. Hi-index plastic is lightweight and thinner than most plastic. Essilor offers hi-index 1. Polycarbonate lenses have superior impact resistance and are lighter than regular plastic lenses. Single vision lenses —made for one, consistent focal power to correct a single vision condition. Concave lenses —used to treat near-sightedness, or myopia.
The lens shape is concave thicker at the edge, thinner in the middle to bend rays outwards. Plus lenses —used to treat far-sightedness, or hyperopia.
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