Monovision

Why do people have monovision performed?

Why do people have monovision performed?

As people age, they gradually lose the ability to focus on objects that are up close. This is known as presbyopia. The natural lens inside the eye is flexible when you are young which allows the shape of the lens to change easily when you read. With increasing age, the lens gradually loses its flexibility resulting in a decreased ability to focus at close range. This process can not be reversed but there are methods to improve near vision such as reading glasses, bifocals, progressive lenses and monovision. Monovision correction can be done with laser eye surgery and is one way to improve near vision without glasses.

What is Monovision?

Monovision is an option that candidates may choose when having either LASIK or PRK surgery. A patient's dominant eye is treated with the laser to see in the distance. The other, non-dominant eye is treated to have a closer focal distance, better for reading, but not as good for distance vision. Using both eyes together, the patient can then see for both distance and near vision.

Who is a candidate for Monovision?

Candidates are usually over the age of 40 as this is when presbyopia starts to become noticeable and inconvenient. They have 20/20 corrected vision in each eye. You will find out if you are a candidate at your complimentary consultation.

How is the Monovision procedure performed?

The surgical procedure with Monovision is exactly the same as LASIK or PRK. The only difference is the amount of laser treatment done on the reading eye. This will be slightly less for nearsighted patients and slightly more for farsighted patients.

Does it take time to adapt to Monovision?

Yes, the adjustment period usually takes from days to months. Most people adapt quite naturally, but are aware of the difference between the two eyes at first. When the brain adapts, this sensation goes away. Early on, some patients may find their eyes feel tired or they may see halos around lights at night. Patients should relax and use both eyes together to allow the brain to adapt.

Will I still need glasses after having the Monovision procedure?

Monovision is an excellent way to decrease dependence on glasses, but for some people it may not eliminate them altogether. Monovision allows people to see things up close for most tasks, but extra magnification may still improve vision for very fine print or for prolonged reading periods. This may become more noticeable as the natural lens of the eye continues to lose focusing power over the years. However, near vision will always be better with monovision than without. Most patients see well for distance vision without glasses, but if needed, vision can be improved for demanding distance vision tasks such as night driving, with use of occasional distance glasses.

by: Joey Casel

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