What Lens Thickness Should I Get?

What lens thickness should I choose? If you’re moderately, or very short-sighted you’ll benefit from thinner lenses as the edge thickness of your lenses will be more visible. Lenses with a refractive index of 1.6 are ideal for prescriptions where the – value of your SPH prescription is between -2.50 and -4.00.

What is the difference between 1.57 and 1.61 index lenses?

The main difference between 1.57 and 1.61 index lenses is the thickness of the lens material. An individual’s prescription lens power may also influence which type of lens to use for eyewear. For example, if the lens power is approximately -2.00, it may be more suitable to opt for 1.56 index lenses.

Is a 1.74 index worth it?

1.74 high index lenses are better for those looking for the thinnest lens possible; generally, people with extremely high prescriptions choose this option. 1.67 high index lenses are better for those looking to save money or those who do not have extremely high prescriptions.

Are thin lenses better?

Thinner lenses will look better. They’ll be easier to have the lens edges hidden within the frame of the glasses. They’ll look less noticeable when people look at your glasses. And, they’ll feel better.

Are 1.5 lenses thick?

Best for 1.5 (Standard) 1.6 (Thin and Light) 1.67 (Thinnest and Lightest) 1.74 (Thinner and Lighter)

What is the difference between 1.5 and 1.57 lenses?

The 1.57 mid index lenses are meant for people with moderately strong prescriptions, and they are thinner and lighter than standard lenses. The lens is a polycarbonate composite made from polycarbonate, other polymers, and resins that keep it thinner and lighter than the standard 1.50 lens.

Are 1.67 lenses worth it?

The difference between 1.67, which is considered regular index and 1.74 is quite small, and really, the only way you’ll notice the difference is if you have a prescription below a -6 or above a +4. However, if you are in need of a very strong prescription, it is absolutely worth the additional cost!

Who should get 1.74 high index lenses?

Hi-index 1.74 lenses are perfect for:
People with +/- 2, and stronger prescriptions. People who are self conscious about the thickness of their lenses. People who wear contacts because traditional lenses distort their eyes.

What are 1.74 high index lenses?

The High Index (1.74 index) lens material is the thinnest and lightest lens material in the world, and is the best choice for high-power prescriptions, or anyone who wants the thinnest lens for their application. They have 100% UV protection and work well with most frame styles other than drilled rimless.

Can 1.74 high index lenses be tinted?

The 1.74 high-index lenses are not recommended for rimless frames. You can choose to add a variety of coatings and treatments to the lenses for anti-reflection, smudge-resistance and UV protection. The lenses are available in tinted polarized and transition options.

Do I need 1.74 high index lenses?

A high-index lens may be recommended if your optical prescription is above 2.00 diopters. High-index lenses have a refractive index above 1.50— ranging from 1.53 to 1.74. The image below compares the lens thickness of a regular plastic lens (1.50) to the most commonly prescribed high-index lenses.

Does Costco have 1.74 high index lenses?

In answer to the question posed in the title, then, yes, Costco do stock 1.74 high index lenses. They also sell a range of other high index lenses.

Can lens thickness affect vision?

The four attributes of lenses that most affect appearance are: edge thickness, magnification/minification, curvature and reflectance. Lenses with thick edges, especially lateral edges of about 5mm or more, tend to attract attention and detract from good appearance.

What’s the difference between 1.5 and 1.6 lenses?

1.6 index lenses are thinner and lighter than 1.50 index lenses, enhancing the appearance of your eyewear by up to 20% in comparison with 1.50 index lenses and are ideal for full rim or semi-rimless frames.

How thick is a 1.74 lens?

For power more than that, choose the thinnest lens, 1.74 index. It will be around 5mm to 8mm.

What is the average lens thickness?

Adler² reported that the thickness of the normal human lens was 4 mm at the age of 20 years, 4.3 mm at the age 40 of years, 4.45 mm at the age of 50 years, 4.7 mm at the age of 60 years, and increased in thickness to beyond 4.7 mm after 60 years of age.

Is high index better than polycarbonate?

Polycarbonate is by far the safest lens available. It’s up to 10X more impact-resistant than high-index lenses and is therefore the ideal lens material for sports protective eyewear and children’s glasses. Polycarbonate is the standard choice for almost all eyewear that requires shatter and/or chip resistance.

How effective are blue light glasses?

Frempong says. According to the American Macular Degeneration Foundation (AMDF), there’s no evidence that blue light can damage the eye, and therefore any claims that glasses offer protection against retina damage or eye conditions like macular degeneration aren’t accurate.

What is the difference between 1.50 and 1.61 lenses?

The 1.61 are 20% thinner than 1.50 Standard and are recommended for full-rim or semi-rimless frames. These work well for prescriptions above +4.00 or below -4.00.

What’s the difference between 1.67 and 1.74 high index lenses?

Both 1.67 and 1.74 high index lenses can reduce the eye distortion caused by strong prescriptions, 1.74 high index lenses perform better than the 1.67 high index lenses. As for the color of lens, both come in clear, gray-tinted and brown-tinted, but only 1.67 high index lenses come in Transition brown or gray.

What is the difference between 1.59 and 1.6 index lenses?

The 1.59 is probably polycarbonate which will be lighter and impact resistant, but does have a little bit of distortion. Versus the 1.6 lens will be more optically clear, but will be heavier and not impact resistant (if that is important for your lifestyle).