Prescription Glasses and Sunglasses|Sllac

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Frames and Lenses

FAQ: Frames And Lenses; Sunglasses; Prescription; Orders And Payment; Shipping; Return And Exchange

FAQ: Frames And Lenses; Sunglasses; Prescription; Orders And Payment; Shipping; Return and Exchange

Full-rim, half-rim, or rimless?

Your Rx may be too strong for half-rim or rimless glasses, so full-rim would be your option. Full-rim glasses, especially in the nerd-chic look, are very popular. They are generally more durable than half-rim or rimless frames. Half-rim frames are great for people with slim faces. They show more of your face than full-rim frames, and are more durable than rimless glasses. Rimless glasses are great for people who will treat their glasses delicately, and who want their glasses to be practically invisible on their face.

Can I order frames without lenses?

We'd like to tell you that we currently don't provided glasses without lens, we are sorry that we cannot meet your needs.

Out of Stock Frame

You probably got here because you're looking for a frame that is at the moment out of stock, this might happen from time to time- but don't worry! Our customer service will be glad to let you know when your frame is coming back to our stock, or any other questions related to out of stock frames. For any other questions please contact our customer service By e-mail: [email protected] Or by phone: 1-831-888-0086

What is the difference between Acetate and Standard Plastic?

Acetate is a premium plastic that is more durable than standard plastic. Acetate is also extremely lightweight and more flexible than Standard Plastic, as well as having more diverse color patterns and richer hues. Standard Plastic also tends to be more brittle.

What is the difference between Titanium and Steel?

Titanium is more durable and significantly lighter than Steel. It is also more resistant to corrosion and more biologically compatible. However, both metals work well for a wide range of frames.

What frame material is right for me?

That's a decision that only you can make, but we can help! If you want a super light frame, go with one that's 15 grams or lower.Titanium frames are generally very light. If you want a durable frame, go with stainless steel or memory titanium. If you are allergic to metals, stay away from metal alloy and memory titanium frames, both of which use nickel, an allergen. Stick with frames made of hypoallergenic materials, such as stainless steel or titanium. If you like plastic frames, choose an acetate frame, because acetate is cellulose-based, and therefore hypoallergenic.

What do the numbers printed on my frame mean?

Some frames have a series of numbers printed on the inside of a temple arm (the part that goes behind your ear). The first numbers are typically the manufacturer’s style number and color code. But farther down the temple arm, there may be important numbers that refer to the dimensions of the frame. These numbers are the measurement, in millimeters, of the lens width, nose bridge width, and temple arm length. Often the lens width and nose bridge width are 2-digit numbers separated by a square, and the temple arm length is a 3-digit number in front of or behind the others. Knowing these numbers can help you choose a frame similar in size when shopping.

Do you offer glasses that turn into sunglasses outdoors?

Yes! We offer photochromic lenses.First select your eyeglasses frames and then select photochromic lens. And that’ll do it.

Are there any limitations for bifocals or progressive lenses?

For bifocals, frames must be at least 28mm. Progressive lenses require a lens height of 30mm.

Can you replace lenses if I send you my frame？

Unfortunately, we do not provide lens replacement.

What are your lenses made of?

Our 1.50 index lenses are made from CR39, a lightweight and resilient optical polymer that is almost as clear as glass but even lighter. The CR39 provides stellar optical quality and are free on most frames. They can be easily upgraded to include scratch-resistant, UV and anti-glare coating. We recommend this option for people with low prescriptions.

Our 1.57 index lenses are a polymer lens that provides a thinner lens for stronger prescriptions than standard index optical lenses.

Our 1.59 index lenses are made by Polycarbonate which was introduced in the early 1980s in response to a demand for lightweight, impact-resistant lenses

Our 1.60/1.67/1.74 lenses are made by MR-series, which is premium, clear, strong, thin, with visual appeal and integrity.

Below is the detail parameter of lenses:

We use free-form lenses (also called digital high-definition lenses) that are leading the industry standard. Our lenses are optimized with computer-controlled surfacing equipment that is much more precise than conventional tools.

Since eyeglasses can have tint lenses, what's the differece of eyeglasses and sunglasses?

All eyeglasse frames in sllac.com can have tint lenses, including common tint, gradient tint, mirror tint lenses and polorized lens, so eyeglasses seems the same as sunglasses, is that correct?

No, here are two main difference of sunglasses and eyeglasses:

1. Sunglasses are born for tint lenses, and are more fasion, their seen area are usualy larger and more curved.

2. Sunglasses prescription range is not so wide as eyeglasses.

current Sllac

Sunglasses prescription sph range is -6.00 ~ +2.00 ,

Eyeglasses prescription sph range is -20.00 ~ +12.00

this is an approximate range based on the spherical (SPH) value. If you have astigmatism (CYL) in your prescription, this range may be further limited.

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