So how does a contact lens work?
So i have often thought to myself how do contact lenses actually work? I know its not something we think about alot but i think its important to understand how these quite advanced products actually function. The contact lens rests on your eye mainly due to the pressure that your eyelid puts on it. Also your eyes create a small amount of moisture throughout the day and this acts like a type of “glue” to help fix the contact to your eye.
As we know the main function of the contact lens is to correct your vision. These vision problems are often caused by problems such as myopi, presbyopia and hyperopia which many people suffer from. The reason these conditions cause problems for people is due to the fact that when light enters your eye it no longer converges at the retina and so you get blurry or out of focus vision. Contact lenses fix this problem by changing the angle that the light actually hits your retina. Some vision problems require different types of lenses, ie you may need lenses that are thinker at the edges due to the angle that your retina requires the light. Its also worth noting at this stage that proper contact lenses should be proscribed by a specialist so that they fix the exact problem you are having with your eyes.
One of the major benefits of contacts over glasses is that they are a over complete peripheral vision solution. Often when people are wearing glasses they get a blurry or distorted view from the sides as this is not covered by the glass. I suppose the only downside to some lenses is that they can require maintenance as they need to be cleaned daily and also stored in a cool and dry place. As you can see theres more to contacts than you might think at first but i like to think you should learn something new every day!