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Monovision option of contact lens is a technique for correcting presbyopia in which reading power is incorporated into a single vision Contact Lens worn usually in the non dominant eye. It has a success rate of 67%.
Let’s consider a patient with the prescriptions below
RE :- 3.00 d sph – 6/6
LE :-3.00 D sph – 6/6
Near add +1.0 D sph N/6
Monovision Solution Using Contact Lens
RE : -3.00 d sph 6/6 – this eye is good for distance
LE : – 2.00 D sph N/6 – this eye will work for near
But with all this advantages, there are some drawbacks too that you’ll have to educate your customers about. They may lose some stereopsis, have some intermittent issues, experience slight adaptation issues, night driving issues and shortened reading times. It might need a little convincing for the beginners. But educating your customers is necessary. This is an option for patients who are ready to agree to some degree of compromise. This may not be the ultimate solution so don’t over promise. But this helps atleast for people who are ready to take a 6/happy vision.
We conducted a survey on offering lens options, where we asked presbyopes if they would try contact lense. The. results surprised us . 80 % of those surveyed were happy to know about it. In fact, 50 % of them even wanted to try it. 10% of them used regular multifocals. 25% of them used them on occasions
Monovision: Fitting Guidelines
Giving your customers monovision lens is easy. To begin with, test for dominant eye. Fit the distance dominant eye with distance power and non-dominant eye with near power, this is how you get the accurate reading for monovision.
Monovision : Review
Monovision has received good response so far, it is good for short term occasional use : BUT REMEMBER it reduces stereopsis, reduces contrast, needs intermediate compromise, night driving can be an issues, shortened the reading times. This is for patients who are not really expecting too much and are ready to make some compromise.
Success is better if…
Best success rates for monovision seen in the cases of Hyperopia, Ammetrope, WTR Astigmatism, Low-Add and patients with small pupils.
When it comes to suggesting anything to your customers, be it the product or the material, the patient’s occupation and requirements matter a lot. So be thorough with the needs of your customers, understand what is most suitable for them. Give them a variety to choose from, and not too much, so that you avoid confusing them.
Last but not the least, remember, talking to your customers is the key!
She is presently the Director School of health sciences, Ansal University, with over 30 years of academic and clinical experience. Retired optometrist and educator from All India Institute of Medical Sciences. She has authored three books and has been awarded the Shreshtshree award, Australian leadership fellowship award and best Global Contact lens educator in 2015 by IACLE.
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