Eye Exams/Glasses from Des Plaines Eye Care Center (Up to 86% Off)

Des Plaines Eye Care Center Des Plaines

2 Ratings

Unable to add now. Please try again later
Unable to remove now. Please try again later
Sale Ends 1 day 10:59:35
Up to 86% Off
2 Ratings

What You'll Get


  • Eye Exam and $251 Towards Prescription 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.

The Fine Print


Promotional value expires 90 days after purchase. Amount paid never expires. May be repurchased every 180 days. Appointment required. Limit 1 per person, may buy 1 additional as gift. Limit 1 per visit. All goods or services must be used by the same person. Not valid towards contact lenses, contact lens fittings, or Plano sunglasses. If appointments are cancelled before 24 hours, a $25 fee will be charged. Cannot combine with insurance or any other offers or discounts. Must use promotional value in 1 visit Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

About Des Plaines Eye Care Center


Regularly
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.