While many people around the world need corrective lenses to see, not everyone understands what goes into making a pair of prescription glasses or even what causes vision problems in the first place. This guide will help you better understand common vision problems and how your glasses can help.

Why People Need Glasses

Most people who have vision problems deal with refractive errors, which means the eye is unable to accurately focus light on the retina. This is often due to the way the different parts of the eye is shaped or curved. There are four main refractive errors that a person may need glasses for:


More commonly referred to as nearsightedness, myopia causes a person to have difficulty seeing objects far away while having no issues seeing items close up. This condition is usually caused by a long or oval-shaped eyeball or a cornea that is too curved, causing images to become focused in front of the retina.


Hyperopia, or farsightedness, may have the opposite effect of myopia, causing the individual so see clearly items that are at a distance while struggling to see up close. However, more severe cases can cause blurry vision at any distance. This refractive error causes the eye to focus images behind the retina as opposed to on it, often due to a short eyeball.


If the surface of the cornea has an irregular curve, that can cause distorted vision at any distance. This condition may accompany either hyperopia or myopia. It can sometimes develop due to a condition called keratoconus or due to an eye injury.

How Lenses Work

The type of lens used depends on the vision problem an individual has. When reading your prescription, you will see the abbreviations OD or RE, which refers to the right eye and OS or LE, which refers to the left eye. Sphere measurements are used to describe how near or farsighted the individual is, cylinder measurements show the amount of astigmatism, and axis shows the direction in degrees of astigmatism.

There are three types of lenses used to address different refractive disorders:

  • Concave lenses are indicated with a minus symbol and used to correct nearsightedness. They are thinnest at the center of the lens.
  • Convex lenses are marked with a plus symbol and are thickest at the center. They are used to address farsightedness.
  • Cylindrical lenses are curved in a specific direction for people with astigmatism.

How Frames Work

There are a variety of frame types that people can choose from depending on their style preferences and needs. Sports prescription glasses are designed to prevent slippage in motion and may include a strap to keep the frames in place. Safety prescription glasses are made from durable, flexible materials that can withstand impact in hazardous work environments.


How long does it take to make prescription glasses?

It can take anywhere from a couple of days to a couple of weeks for prescription glasses to be made depending on your prescription and what special finishes you opt for. At Safety Gear Pro, it usually takes 14 to 16 business days to process your order and have them completed in the lab.

How much should eyeglass lenses cost?

There are many different factors that determine how much a pair of glasses cost. The materials used to make both the frames and lenses of the eyeglasses have a substantial impact on the overall price tag, as will adding extra coatings. If you need progressive or bifocal lenses, that can up the cost as well.

Should I buy glasses online or in store?

The main benefit of buying glasses online is the wide selection of frames to choose from. However, you cannot try on your new frames or get advice from an optometrist in person. You can access a frame sizing guide to make sure your new glasses fit before you order them from our site.

What is the average price for a pair of prescription glasses?

For people who buy their glasses in-store, the average out-of-pocket cost according to Consumer Reports is around $150. However, shopping online brings the price down to a median of $91 for a pair of glasses. Frames vary widely in cost, with frames as low as $8 or well over $400.

What features can I get added on my prescription glasses?

There are many ways you can customize your prescription glasses to meet your unique lifestyle needs. A few of the options we offer at Safety Gear Pro include:

  • Anti-scratch coating
  • Standard or premium anti-reflective coating
  • Hydrophobic water resistance
  • Extra clarity UV
  • Blue light protection
  • All-in-one coating

When you purchase a pair of eyewear from us at Safety Gear Pro, it matters that you comprehend how your glasses work so you can make an educated purchase. Browse through our extensive collection of fashion, sports, and safety frames today and get a new pair of prescription eyeglasses today.