|
Contact lenses are fabricated from strong plastic material described as Polymethyl Methacrylate which is also utilized in making Plexiglas sheets. One thing you need to know about hard lenses is that these do not absorb water. This is necessary to help oxygen go through the lens into the cornea. Hard lenses can cause the wearer soreness and discomposure since the eye requires oxygen to remain healthy. However, the advantage of these lenses is that these can be cleaned easily since microorganisms do not stick to these devices. On the other hand, soft contacts are more flexible and easier to wear since these are made of soft, gel-like plastic. Soft lenses can absorb a lot of water which enables oxygen to be transmitted to your eye. It makes the lens bendable and more relaxing to wear. Most manufacturers describe soft contact lenses as "breathable" because of the capacity to convey a sufficient amount of oxygen to your eye. In other words, you can wear soft contact lenses longer with minimal chances of irritation. There are soft daily-wear lenses which need to be removed before you go to bed. Extended wear contacts can be worn for a number of weeks without having to remove the lens. Disposable lenses can be worn from one day to several weeks before being thrown away. Cosmetic lenses Have the capacity to change the shade of your eyes or produce a tint for better vision outdoors. Some cosmetic lenses can change your eye's appearance considerably. The ultraviolet protection lenses serve as shield against dangerous ultraviolet rays caused by the sun. The corneal reshaping lenses can be worn overnight and progressively reshape the cornea to remedy your vision. Once you remove them, you can for the time being see clearly without using contact lenses. On the other hand, the gas-permeable lenses such as acuvue oasys were developed in the late seventies. These are made out of a mixture of Polymethyl Methacrylate, silicone and porous plastic. These lenses put together some of the features of hard and soft contact lenses. They are considered to be more durable than soft lenses. However, these are still capable of allowing oxygen to pass through the eye. These are more comfortable to wear than hard lenses. At the same time, these lenses are less likely to develop bacteria and cause infection than soft lenses because of the absence of water. The firmness of the lens allows good vision. Daily contact lenses are ideal alternatives for eyeglasses. However, there are concerns and complications that you should consider. These should be diagnosed immediately and treated to avert possible loss of eyesight. Complications can be a main health issue and are generally diverse. It can involve the eyelids, membrane that covers the internal portion of the eyelid, and layers of the cornea. When you review these problems, classify them according to the anatomical structures. Likewise, bear in mind that contact lenses increase the possibility of of eye infections. Experts offer professional advice on the proper use of contact lenses. Daily contact lenses are perfect alternatives for eyeglasses. However, it is necessary to know everything about soft contact lenses before going to the eye care specialist for examination and prescription. Learn more about air optix aqua contacts.
Related Articles -
daily contact lenses, acuvue oasys,
| 
