Your reading glasses lens strength is determined by your age, your reading distance and if you wear or need prescription eyeglasses for other distances. 



Estimate Your Lens Power

Age used to be the main factor in needing reading glasses but long-hours at the computer has changed that. It's still helpful to use this timeline as a starting point in determining the correct lens power in your reading glasses at any reading distance.

Fact 01:

You see with your brain. Wearing reading glasses does not make your eyes worse. Your brain and you just get used to seeing things clearly.


As you move your reading glasses down your nose, the magnification increases. If you like to wear your readers low on your nose choose your lens power mindful of this and lower your lens power slightly.

  • 25-30 years old start with +.50 - +.75
  • 30-40 years old +1.00
  • 45 years old +1.50
  • 50 years old +2.00
  • 60 years old +2.00 - +3.00

Where Do You Want To Use Your Reading Glasses

How far you view your reading material also determines your reading glasses lens strength.

The two main reading distances are:

-Traditional reading distance is 14-16 inches

-Standard computer reading distance is 18-20 inches

Fact 02:

Scientific Principle: Focal power is inversely related to focal length- which means when your reading material is further away you need less lens power to read it clearly and as you move your reading material closer you will need more lens power for it to be clear.


If you want to use your reading glasses at your computer - first, find your correct lens power at traditional reading distance. Then reduce that lens strength by about half and tweak in consideration of the distance of your digital device to your eyes.


Reading Glasses Eye Chart

Read chart at traditional reading distance of 14-16 inches. The first line you have difficulty reading is your suggested lens strength at that distance. For computer reading reduce that strength by about half. As you move further away from your monitor the less lens power you will need to read it clearly.


Computer resolution differences require this chart be printed for accurate results. Actual sizing may vary depending on your computer settings.

Print Chart


Our readers are made with CR-39 high-grade aspheric optical plastic lenses ground to precise optical standards. Our premium lens coatings and treatments make cleaning easy and maintain lens integrity- all important to reading clearly and comfortably. All of our lenses are hard coated for scratch resistance.


Our prescription quality frames are made from premium grade plastics and metals to retain looks, fit comfortably and endure daily wear. Featured collections include women's petite and oversized stylish looks, big man fit with long temples, flexible-lightweight-resilient titanium frames and premium quality basics. All of our readers are suitable for prescription lenses.


Our reading glasses are made from authentic
Optical Grade Premium Lens Materials with Clear + Uniform Lens Surfaces
ground to Precise Ophthalmic Standards, not just acceptable tolerances.

Because lens materials, lens quality, manufacturing standards and measurements are important for clear reading and healthy vision.

Still Unsure About Choosing Your Lens Power?
Send your questions to our licensed optician at

Just A Few More Things


Reading Distances:

Reading at a computer screen 18” away will require a different lens power than reading at a screen that is 28” away or reading on your laptop, reading a book on your lap or reading papers on your desk. Choosing your lens power specific to your reading distance is an important part to eliminating your eyestrain. Many times different corrections are needed for different reading distances.

Wearing Distance:

Some people like to wear their readers down their nose so they can look over them to see the distance and also read up close, like when watching T.V. while reading a newspaper or iPad. If this sounds like you, choose reading glasses with extra-long temples so they stay on securely and with a smaller lens depth so you can see over them easily.