Costco Optical departments offer members the ability to purchase Kirkland Signature contact lenses and shop for the latest Kirkland Signature frames. With a wide assortment that is refreshed several times per year, Costco members can pick Kirkland Signature frames with the right material, shape, size and color that best suits them.

As for lenses, Kirkland Signature covers members in that area as well. Along with prescription lenses for everything from astigmatism to nearsightedness or farsightedness, Costco now offers premium Kirkland Signature 1.60 high-index lenses. What makes these high-index lenses special is that they are crafted from a more refined, lighter and thinner plastic than lenses made of polycarbonate.

"With Costco's state-of-the-art optical labs, which craft lenses through high-definition technology, we're now able to provide members with glasses that offer sharper, crisper and more clear vision than our previous lenses in all lighting conditions," says Tina Hale, Costco Optical assistant general merchandising manager.—Katie Coleman