How to Pick the Perfect Pair of Thin Glasses

 

High-index lenses are perfect examples of thin glasses. People like these glasses for their lightweight nature that does not put any pressure on your eyes and surrounding area. Besides offering an attractive getup, these glasses provide high-level comfort too.

However, there are times when doctors too prescribe high-index lenses. These glasses work well if the patient has a strong nearsightedness, farsightedness, or astigmatism. These lenses maintain their slender configuration, irrespective of the eye power. Their attractive attributes also attract users. 

Statistics show that most eyeglass wearers are nearsighted. Therefore, they need corrective lenses that are thin in the center but thicker at the edge of the lens. The thickness at the edge varies proportionately with the strength of the eyeglass prescription.

 

Reasons that make people use thin glasses

  • The high-index lenses have the ability to bend light more efficiently. Therefore, doctors recommend these lenses for nearsightedness which have thinner edges than other glasses bearing similar strength. 
  • Many of these lenses use plastic as the primary material for these lenses, thus making the spectacles extremely lightweight.
  • Thinner edges require less lens material. It also reduces the overall weight of the lenses. These lenses are even lighter than the same lenses made with conventional plastic. Therefore, these bring more comfort to the user.
  • The slimmer configuration of thin glasses is also due to their aspheric design. It also reduces the 'bug-eye' look as conventional lenses cause in strong farsighted people.

 

How to choose the perfect thin glasses

Various models of thin glasses are available in the market. Experts judge those on their ability to bend light.

Optical experts determine the light-bending ability of high-index eyeglasses based on the refractive index of the lens material. 

Refractive index is a number. It is the ratio of the speed of light when it travels through air and the speed of light while traversing through the lens material.

The speed of light will reduce more as the lens material will put it to more refraction. It indicates that lenses bending light more efficiently have a higher index of refraction than those materials that bend light less efficiently. 

The person must also know that lenses with a higher refractive index are thinner than lenses of the same power. Lenses with a higher refractive index produce thinner glasses. Conventional plastic lenses have a refractive index of approximately 1.50. For glass, it's 1.52. Lens materials with a refractive index that is higher than that of the mentioned glass or plastic are high-index lenses.

Cost may also be a determining factor for high-index lenses. Lenses with higher indices are costlier.

Consulting with the optician brings up the best outcome while choosing high-index lenses. The doctor considers every possible factor while prescribing the index, but the optician does the needful to adjudge the index for the patient's eyes. He is the best person to choose the right high-index lenses that fit patient needs and budgets.

High-index glasses are well suited for patients with myopia or hyperopia. Doctors usually offer single-vision prescription lenses to correct these issues with vision. These lenses also correct peripheral distortion of views.

People above the age of 40 often suffer from presbyopia. The visionary problem debars them from efficient reading. Progressive lenses can correct the issue.

High-refractive lenses also protect against UV of the sun. Wearing a lens with high-index material help protect the eyes from over-exposure to harmful UV rays.

The use of adaptive lenses ensures comfortable vision both indoors and outdoors.

Thinner glasses are usually resistant to scratches and fit almost every frame type. Treating these lenses with anti-scratch, anti-reflective, and UV-protection coatings can promote vision. It can also help in lengthening the lens's durability.

Departing version

Dealing with refractive glasses offers enormous benefits to the users. However, knowing the demerits also help the user to decide if they want to invest in these glasses or not.

  • High-index thin glasses are costlier than regular lenses.
  • Many eye care professionals recommend adding anti-reflective and anti-scratch coatings to high-index lenses. These help to improve vision and lens durability.
  • It is also important for the users to know that high-index lenses are typically more fragile than regular lenses. The user needs to practice a bit more care while handling the items.
  • It is justified to discuss the advantages and disadvantages of the lenses with the doctor before purchasing.

 

























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