Monovision for LASIK: Dominant Eye Correction and Other Options

Consider carefully if you are thinking of getting monovision for LASIK surgery. Should your dominant eye be overcorrected? Not necessarily. Proper correction for your dominant eye is crucial for achieving optimal visual performance. In this article, we will explore the factors to consider and discuss other options for addressing presbyopia.

Targeting Emmetropia in the Dominant Eye for Monovision

Monovision is a refractive surgery technique where one eye is corrected for distance vision while the other is corrected for near vision. This approach helps individuals who are in the presbyopic age group (typically, those over 40) manage their vision without needing glasses for everyday activities.

When performing monovision through LASIK, it is essential to correct the dominant eye for distance vision and the non-dominant eye for near vision. Overcorrecting the dominant eye would negate the benefits of monovision. If the dominant eye is overcorrected, it would result in blurred distance vision, making it difficult to perform activities that require clear distance vision (e.g., driving).

It is important to understand that the term 'overcorrected' can be ambiguous, as it depends on the individual's initial condition before LASIK surgery. For example, if a patient was myopic (nearsighted) before LASIK and is now hyperopic (farsighted), overcorrecting would make them more myopic. Conversely, if the patient was hyperopic before LASIK and is now myopic, overcorrecting would make them more hyperopic.

In general, the aim is to not over or undercorrect the dominant eye. The target should be to achieve emmetropia, which is when the eye is neither myopic nor hyperopic. However, a small degree of hyperopia in the dominant eye (0.25D) may be acceptable as a trade-off for maintaining clear distance vision.

Presbyopia and Its Treatment Options

Presbyopia, or age-related farsightedness, is a common condition that occurs due to the natural aging of the eye. Here are a few options to consider for treating presbyopia:

Monovision with LASIK: As previously mentioned, monovision is an option where one eye is corrected for distance and the other for near. This method requires adaptation and some individuals may find it challenging at first. Presbyond: Presbyond is a technique that uses corneal corrections specifically for presbyopia. This can be a viable option for individuals who are not candidates for monovision or who prefer a more conservative approach. Refractive Lens Exchange (RLE): RLE involves replacing the natural lens of the eye with an artificial multifocal intraocular lens. This is a more intensive procedure, similar to cataract surgery, and can provide a considerable improvement in vision.

Each option has its pros and cons, and the best choice depends on the individual's specific condition and lifestyle needs. If you are considering LASIK for monovision or any other treatment for presbyopia, it is recommended to consult with an experienced ophthalmologist to discuss the best course of action.

In summary, when planning for monovision with LASIK, the dominant eye should ideally be left with clear distance vision. Other options like Presbyond and RLE can also be considered depending on your needs. Consulting with a professional can help you make an informed decision that suits your vision and lifestyle.