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Treating presbyopia with monovision using contact lenses

The onset of presbyopia can exist frustrating if yous wear contact lenses and want to go on seeing clearly up close without reading spectacles.

Ane solution is to take your centre physician perform a monovision contact lens fitting. Monovision with contacts tin reduce your demand for "readers" and is an especially adept option if y'all are not a practiced candidate for bifocal contacts.

What is monovision?

With monovision, you clothing a contact lens on one eye to correct your altitude vision and a contact lens on your other center to correct your most vision. The lens for distance vision is usually worn on your dominant eye.

With monovision, the eye that sees well for distance vision will be slightly blurred up close and the eye that sees well up close will exist slightly blurred when looking at distant objects. Only with both eyes open, typically the result is acceptably clear and comfortable vision at all distances.

Therefore, the term "monovision" is somewhat misleading. The 2 eyes nonetheless work together equally a team so you tin see conspicuously at all distances; it's just that 1 eye sees more clearly than the other at a certain distance, and the "stronger eye" will depend on whether you are looking at something far away or up shut.

Though monovision might sound difficult to adjust to, well-nigh people conform to it easily and don't even find which eye is their "altitude heart" and which is their "near center" when both optics are open.

Types of monovision

Depending on your daily visual demands and how you respond to monovision with contact lenses, your eye doctor may recommend a variation of monovision to all-time suit your needs. These variations include:

• Mini-monovision: In this variation, a less-than-typical magnifying ability is added to the virtually vision lens. Mini-monovision oftentimes is an first-class solution for people who observe that standard monovision does not give them the sharp distance vision they desire, and they don't need to do a lot of close-upwards work (or they don't mind wearing reading glasses on occasion).

  A skilful example is someone who spends much of their day driving and little time working on a computer or reading, but wants to be able to read a menu without prescription glasses.

  Though a person with mini-monovision may demand to use reading glasses more frequently than someone who has standard monovision, he or she will be less dependent on readers than a person wearing regular (distance) contact lenses in both eyes.

• Modified monovision: In this variation, a single vision contact lens is worn on the altitude centre, and a bifocal contact lens is worn on the near eye. Modified monovision, like mini-monovision, can provide sharper distance vision than standard monovision, while still providing acceptable about vision without reading glasses for many close-upwards tasks.

  The distance power of the bifocal lens also can be adapted to provide sharper vision at arm's length for tasks such equally calculator work.

The limitations of monovision

The downside of monovision is that some people find information technology compromises the clarity of their altitude vision too much, making afar objects appear slightly blurred.

Others find monovision doesn't provide adequate near vision to requite them the liberty from reading glasses they were hoping for.

As well, although the two eyes still work together as a squad in monovision, information technology can sometimes crusade a slight decrease in depth perception.

How much practise monovision contact lenses cost?

In standard monovision and mini-monovision, conventional single vision contact lenses — including disposable contact lenses — are used. Because these are less expensive than multifocal contacts, lens replacements volition cost less.

Even modified monovision will save you coin on lens replacements compared with wearing bifocal contacts, since a bifocal contact lens is worn but on the nearly eye with modified monovision.

But fitting monovision contact lenses is more circuitous and more often than not takes more part visits than a regular contact lens plumbing fixtures. This is because even slight changes to the contact lens ability on either middle in monovision can make a meaning deviation in the wearer'due south visual satisfaction, and each modification of lens power should exist followed past several days of lens wear to encounter how yous adapt to the change.

Therefore, the fitting fee for monovision usually is higher than the fee for a standard contact lens fitting. Many eye care professionals charge the aforementioned for monovision contact lens fittings as they do for bifocal contact lens fittings, which could be twice the fee for a standard contact lens fitting or even more.

Surgical monovision options

Monovision besides can be accomplished with surgery for presbyopia, including LASIK, conductive keratoplasty (CK) and other corneal or lens-based refractive surgeries modified for presbyopia correction.

Prior to any surgical monovision correction, it's smart to "test-drive" the concept with contact lenses beforehand. Mostly, a two-calendar week menstruum of wearing monovision contact lenses volition requite you lot a good thought of how well you will do with permanent surgical monovision.

For more information about the pros and cons of monovision versus bifocal contact lenses for your detail visual needs, see your eye physician for a consultation and possible trial fitting.

Folio published in February 2019

Page updated in January 2022

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Source: https://www.allaboutvision.com/contacts/monovision.htm

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