August 9, 2013
I’ll be honest here. I’m not sure who really likes them. Oh, sure there are some fans. Is there a facebook fan page for these lenses? If there isn’t, someone start one. How would we gauge how many people are not fans though? If there was a thumbs down, I’d click it. I offer them to my patients however. The advertising (what magazines are these ads in anyway?) gets people interested and I oblige them by giving out some samples. They’re free to me, they better be otherwise I wouldn’t spin my wheels talking about them to a patient.
What is it about these multifocal contact lenses that kinda makes them work? They certainly aren’t in any way like a pair of bifocal glasses or progressive lenses. These lenses have the strangest design. I’ll include a picture below of what I’m about to explain. Someone figured out that a person (who are you?) would be able to see far and near looking through both powers at the same time! What? Simultaneous vision is a phrase that sounds pretty cool and technical. The whole concept is like playing more than one instrument at the same time. I’m trying to think of who does that all day long. There are musicians that do that but do they do it all day long? Can you use both arms at the same time to do different things all day long? Of course not. But there are some reasons why I think people do wear them.
One reason I’m sure is some people don’t want to wear glasses. What is the lesser evil then? Glasses can get in the way, fog up, block your peripheral vision, get dirty or maybe they don’t fit well and/or fall off. Another reason is cosmetic. I know people that think they don’t look good in glasses or they don’t want to be seen in them(try on virtual frames) Fine! Try these multifocal contact lenses and decide what’s more important, how you look or how you see.
Now I’m not trying to say people can’t see through these contact lenses but vision is somewhat compromised. Some contact lens manufacturers design these simultaneous vision lenses where the center power of the lens has the distance prescription and the other eye might wear a lens where the center of the lens has the near power. Say what?! Here’s another variable about these little power areas in the lens. Since our pupils change size depending on the light, a person might be looking through more of these powers at the same time or less. Now that adds another interesting affect. Changing vision based on changing pupil size. How do I account for that to give the patient the right lens? Trial and error. Like I said in another post, this is a practice. I know my patients expect a lot and I do my best. But those advertisements sure make it difficult!
And that reminds me, I want to start a facebook fan page for the air puff you might get at your regular exam. How many thumbs up will that get?