$30 for $200 Toward Glasses at Naperville Optical

Naperville

now
$30 $35
Extra $5 Off Ends 5/29
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Value Discount You Save
$200 85% $170
  • Sale Ends
  • 2 days 20:29:21
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In a Nutshell

Optometrist points patient in the direction of stylish frames

The Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. May be repurchased every 120 days. Not valid with insurance. Appointment required, same day appointments accepted. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Valid only for complete pair of prescription glasses or prescription sunglasses with frame and lenses. Not valid toward contact lenses, or non-prescription sunglasses. Not valid with other offers. Not valid with eye exam. Not valid with Maui Jim, Oakley, and Ray-ban. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

The Deal

  • $30 for $200 toward glasses

20/20 Vision: An Imperfect Ratio

The included eye exam will determine your visual acuity, which compares your vision to the 20/20 standard. Read on to find out what this metric really means.

Possessing 20/20 vision may be considered perfect, a level of visual acuity reserved for Navy pilots and the bald eagles that train them, but in fact it’s not even close to average. Developed by Dutch optometrist Hermann Snellen in the 1860s, the 20/20 standard is a somewhat arbitrary distinction. After inventing his now-iconic eye chart—which consists of lines of standardized letters that get progressively smaller—Snellen also instituted the concept of a ratio to define the clarity of a patient’s vision. The denominator represents how many feet away a person of normal visual acuity could stand while still discerning the letters with the same level of clarity as the patient. In other words, 20/40 vision means the patient needs to stand 20 feet away to make out the same size letters as a person with standard vision can from 40 feet.

Because the 20/20 standard is arbitrary, many people actually have considerably better eyesight, represented by such ratios as 20/15 or 20/10. In fact, in the United States, the average visual acuity is sharper than 20/20 until about age 60 or 70, when people’s vision naturally starts to decline as their bangs finally grow past their eyes. Also, though it’s useful for determining basic shortcomings of vision, an eye chart can’t diagnose a proper glasses or contact prescription. To determine that, optometrists test many other factors, including depth perception, peripheral vision, x-ray vision, and focusing skills.

Merchant Location Map
  1. 1

    Naperville

    1935 95th Street

    Naperville, IL 60564

    +16304458166

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By purchasing this deal you'll unlock points which can be spent on discounts and rewards. Every 5,000 points can be redeemed for $5 Off your next purchase.
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