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What Are Trifocal Glasses?

What Are Trifocal Glasses?

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The right pair of glasses can be a fashion statement but they are also necessary. Only roughly 35% of the population have 20/20 vision. Common vision issues might include near sightedness, far sightedness, a struggle with intermediate vision – or a combination of all three! The older that we get, the more vision problems present themselves and this is what makes trifocal lenses so useful.

Understanding Trifocals

In the same way that bifocal lenses are designed to treat close and distance issues, trifocals do the same but with the added benefit of correcting intermediate sight problems as well. Trifocal lenses feature two visible lines, marking the separation of each prescription on the lens. The top section of a lens corrects distance vision, the bottom corrects close vision and middle sections feature an intermediate segment.

Intermediate vision will be a new term for many, as it is not often discussed – but it should be! This type of vision refers to items and tasks that are performed a couple feet away, such as a computer screen or crafts/design work. There are several methods of correcting common “far away” or “close up” issues but trifocals are the only ones that correct intermediate vision issues. Progressive multifocal lenses act and function similarly but use a blended prescription, eliminating the need for divided, individual prescriptions.

The Benefits of Trifocal Lenses

Vision problems tend to happen over time. The older that we get, the more common it is to struggle with sight. Some issues might have plagued you over time, only to have new and unexpected obstacles added to the mix. It is not uncommon for wearers to layer prescriptions, in contacts and eyewear. No one wants to cart around contact solutions, glasses and cases for both. Trifocals lighten the load and add convenience to daily life.

Cataracts are a part of life for many people and are often resolved surgically. Trifocal lenses are great for those who wear glasses but frames are not your only option. IOLs or intraocular lenses are implants that can be used to replace natural eye lenses and are normally made from silicone. These, much like trifocals, use three different types of correction but do not require contacts or glasses.

The Challenges of Trifocals

Switching between types of lenses takes time, particularly if you have become used to a certain type of prescription over a long period. Looking through the wrong section of a trifocal lens can cause distortion and can be off putting at first but with a bit of coaching, this is only a temporary issue. Soon, identifying the right viewing area will come as naturally as blinking.

When using trifocal eyeglass lenses, wearers might sometimes experience an “image jump”. This occurs when an image might appear to move from one part of the lens to another. For some users, these lenses might not be appropriate for long sittings, such as reading.

Whether you are looking to switch to a new form of vision correction or are looking to update according to new prescriptions, it is important to consult an eye doctor before making a commitment. When trying to decide between contact lenses, bifocals or trifocals, always consult a professional first.

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