However, certain sites only offer partial refunds. In many cases, you can return the glasses if you're not satisfied, but make sure to read the fine print on the store's return policy. I once had a certain online store screw up the prescription in the left lens while the right one was correct. Often, the store will remake the glasses for you or give you a full refund. Yes, sometimes prescription glasses don't end up being perfect and may end up bothering your eyes.

A pair of tinted sunglasses lenses start at $97.  Lensabl is one of the few sites that allows you to send in your own pair of frames and get a new prescription lens for them. Its motto is, "Your frames, our lenses," with prices starting at $77 for buying a basic pair of single-vision lenses. Screenshot by David Carnoy/CNET

What do you do if you've already got a pair of eyeglasses frames you like but your prescription is old (or the lenses on your frames are scratched) and you just want to replace the lenses?

Shipping times: Roka has improved its turnaround times now that it's cutting lenses in Austin. It says its standard prescription eyeglasses, readers, and nonprescription sunglasses "will generally ship by the next business day. Our prescription sunglasses and progressives will generally ship in 5-7 business days." For all its glasses, Roka offers free standard shipping in the contiguous United States, as well as optional expedited shipping options, including overnight shipping.

You can often get glasses with basic frames and lenses for less than $100 and sometimes even less than $50 during certain promotions. (I once bought a pair of prescription glasses for $9 that I can't say were all that good, but I've kept them in my car as an emergency pair.)

Liu said he looked forward to Taiwan's industry, government and academia developing "more concrete, constructive measures" on industrial policies related to innovation, research, talent education and retention "to maintain Taiwan's most critical semiconductor industry advantages".

She grew up on the Upper East Side in a two-bedroom apartment with her mother and half-brother.

She recalled how she would spend a few hours or days with Nicholson here or there, but she never really got to know him.

'I do not want to be just another average resort line. I choose prints and silhouettes that I am not only drawn too, and can envision on many types of women, but also ones that I personally haven't seen before in the swim market! 

While it waits to hear back from Education Secretary Gavin Williamson, Brighton and Hove City Council has advised all primary heads to shut their schools, apart from for vulnerable children and those of key workers, and to move learning online.

Allow me to introduce you to Amynthas agrestis, also known as "Alabama jumper," "Jersey wriggler" and the rude-but-accurate "crazy worm." Unlike garden-variety earthworms, these flipping, thrashing, invasive miscreants are ravenous consumers of humus, the rich, organic, essential top layer of soil formed by dead and decaying small animals, insects and leaf litter in places like forests, plant nurseries and your garden.

Coastal says that "for every pair of glasses bought, we will donate a pair of glasses to someone in need." Notable site features: Coastal has a philanthropic partnership with the Essilor Vision Foundation to improve the sight of people who can't afford glasses.

But their existence went largely unnoticed - or perhaps underreported - until the past decade, when ecologists flagged them as problematic, according to Dr. Timothy McCay, a biology and environmental studies professor at Colgate University in Hamilton, New York.

(Reporting by Sarah Wu; Writing by Ben Blanchard; Editing by Himani Sarkar & Simon Cameron-Moore) TSMC's dominance in making some of the world's most advanced chips for high-end customers such as Apple Inc and Qualcomm Inc has shielded it in recent quarters from the downturn flagged by chipmakers including Micron Technology Inc.

'Acting is an art form and a craft. Use your rage of feeling misunderstood or victimized by Hollywood and put it into work that you are so lucky to be getting!!!! 'This obsession our society has with identifying as victims in any circumstance is truly terrifying to me,' she continued.

Shawn Mendes and Victoria Justice are surrounded by ghouls... Laura Dern, 55, learns pasadena is a proud mother as she makes... Their decorations include a $1,800... Kim Kardashian puts her eye-popping 24inch waistline on...

It only takes a few minutes to enter your prescription and measure your pupillary distance, what does a child learn in first grade then you're on your way to ordering glasses online.  Buying glasses online from a manufacturer like Warby Parker or one of its rivals is not only cheaper, but also a lot less time-consuming than going in person. These online glasses shops have caused the price of glasses to drop -- in some cases, you can save hundreds of dollars on prescription eyeglasses, contact lenses, blue light filtering lenses and sunglasses.