Bifocal Contact Lenses
Now you don't have to stop wearing contact lenses because you need bifocals! Bifocal contact lenses are designed to give people who have presbyopia great vision near, far and all distances in between.
Presbyopia is also known as "old eye" is an age related condition that usually develops in your 40’s. It is the inability of the eye to focus on near objects due to a natural loss of flexibility in the natural lens of the eye. If you have been holding that menu at arms length to be able to order, you might just be suffering from presbyopia.
They are available in soft or rigid gas permeable (RGP) designs. If you have been suffering from the symptoms of blurred vision, headaches, eye strain or eye fatigue, bifocal contacts will help to eliminate those symptoms.
How do Bifocal Contact Lenses Work?
Like bifocal eyeglasses, bifocal contacts have two powers on one lens: one to correct distance vision (hypermetropia) and the other to correct near vision (myopia), helping you see clearly at both distances.
Various types of designs are available for bifocal contact lenses and the type that is right for you depends on your lifestyle and amount of correction needed. Your eye care professional will help you with making the correct choice for you. Here is a closer look at some of the the various bifocal contact lens designs available today.
Translating Contact Lenses
These lenses work much like bifocal eyeglasses. There are two distinct prescription areas, one for near vision and the other for far vision. Depending on your visual needs the lens can have either near or far vision at the top or the bottom. Contact lens tend to rotate when you blink, to avoid rotating the bottom of the lens is weighted (ballasted) and/or flattened (truncated). This helps to keep the lens in the proper position
Aspheric Multifocal Contacts
Aspheric lenses (also known as progressive contact lenses) designs work more like progressive eyeglass lenses, that is different prescriptive powers are located across the lens letting you see clearly at all distances. These contacts do require a period of adjustment, the eyes eventually learn to ignore near objects when focusing on far objects and vice versa.
Concentric Contact Lenses
Concentric Contacts (also known as annular contact lens) have an arrangement of prescriptions in a bulls eye pattern in which they are alternate in strength from near to far. Depending on your eye care needs the centre of the lens can either be designed for near vision or far vision.