You may wonder how the contact lens stays in your eye. This article is going to give you some information that will answer your question. So, just take a look at the information below.
The Shape of the Contact Lenses
A set of contact lenses can act as the eyeglasses for correcting the vision by changing the angle in which the light comes into the eye. It will allow for clarification and also magnification of the objects either near or far. It depends on the requirements of the wearer. Unlike when wearing glasses, the people who are directly wearing the lenses on the top of their eyeballs avoid the hassles inherent with wearing glasses.
While every person has a shared overall shape of his/her eyeballs, the contact contour can differ among people. In order to get the lenses stay on the eye effectively, the shape should be designed to fit the eyes of those who are going to wear them. Moreover, the two layers in the contact allow the doctor for making adjustments to the outer layer to see and the inner layer to fit. Also, the side worn against the eye has shape to match the wearer’s eye. It will allow it to properly sit on the eye and it will improve its ability for staying in place atop the eye without moving or falling out.
The Natural Adhesives
The tears actually can help to clear the eyes. Besides, tears can also help to hold the contact lenses in place. Tears are able to create adhesive between the lens and the eye. It is found that some people may require additional artificial tears for preventing their eyes from drying out since lenses use natural tears to stay in place. This problem commonly affects those who are wearing soft contacts that do not allow the air behind the lens.
The Pressure on the Contact Lens
The eyelid can act for applying direct physical pressure against contact lens. The pressure accounts less for the reason that contact lenses stay in the eye, but blinking motion of eyelids moistens the outside part of the lens. You should know that every time the eyelid closes, it can imperceptibly move the lens. It can allow the tears produced to flow in both front and behind the contact, to make sure that the dust and the irritants cannot get lodged behind the lenses.
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