Spectacles are simply defined as a pair of glasses. Eyeglasses are popular nowadays as they have become an important part of modern fashion. Even after the advances in science like contacts and vision correction surgery, people still like to wear glasses.

Its availability in many styles and colors provides a large variety to choose from. With that many choices, people with perfect vision are also buying non-prescription eyeglasses to give a new touch to their wardrobe.

But before getting a pair of glasses, a person needs to visit their doctor for an eye exam. An eye exam determines the kind of vision correction glasses you need.

An optometrist or eye doctor will write your prescription and suggest the kind of lens you need. After this, you can choose your favorite glasses according to your style.

Types Of Glasses

Glasses are of several types according to the needs of the patients. Each eyeglass specifically corrects a particular type of vision issue.

Based on your eye check-up, the doctor prescribes you an eyeglass. The eyeglasses will be specifically for your eyes and correct any vision-related issues.

They are of many types of glasses, and each one specifically corrects a particular vision issue. They are:-

 

  • Single vision lenses: 

 

They are the cheapest and most common eyeglasses available in the market. A single vision lens specifically corrects the vision for a specific distance. This distance can be far or near. These lenses are prescribed to people who are nearsighted, farsighted or have astigmatism. In astigmatism, a person experiences blurred vision near and far distances. They are the largest field in the vision industry as a lot of people have these issues. People are usually either farsighted or nearsighted.

 

  • Bifocal: 

 

A bifocal lens is specifically for someone who has both the issues, far and nearsightedness. Some people have both issues. These people are unable to see the near and far objects. Bifocal eyeglasses are also known as multifocal glasses as they have more than one power in them. The lens is divided into different sections to cover both the vision issues.

 

  • Trifocal lens: 

 

These lenses are similar to bifocal as they have more than one type of lens, and they correct different vision problems. The only difference between bifocal and trifocal eyeglasses is that the bifocal has two parts, and the trifocal lens has three parts. The trifocal lenses have three parts, one for farsightedness, one for nearsightedness, and one for intermediate vision. This intermediate part is for watching screens like a computer screen.

Now You Know!

The only shortcoming of both of these eyeglasses, bifocal and trifocal, is that they have a parting line between each field of vision. These different sections provide an absurd view of different distances. Some people are used to it, but new lenses like progressive lenses were introduced to fix this parting line issue. Be sure to seek direct assistance from experts to learn more about eyeglasses so that the best purchase decision can be made.