The health problems that can be caused by the contact lens ‘ dangerous behaviours may be enough to discourage many people to wear them. Nevertheless, there is a range of other advantages that certain types of contact lenses can provide that no other tools can.
Contact lens models have become more sophisticated over time. Although initial products may have only been able to correct myopia and long-sightedness, new models of lenses can be used to treat and track other conditions that affect the eyes.
Orthokeratology, also known as Ortho-K, is a lens fitting procedure that offers a temporary degree of vision correction by adjusting the curvature of the cornea to enhance its ability to focus on images.
Use specially made, rigid contact lenses usually worn overnight to adjust the curvature of the cornea. Ortho-K lenses are most widely used to correct myopia.
Many people wear multifocal lenses because they have a disease called presbyopia, that affects the eye’s ability to focus on adjacent objects The condition can also be treated with multifocal contact lenses.
There are two primary designs for these types of lenses. For short and long-distance prescriptions, there are two separate regions for alternating vision lenses. The eye alternates between the two different prescriptions as the wearer’s head travels up or down.
Simultaneous vision lenses allow the eye to look through prescriptions for short and long distances. The two prescriptions can either be grouped or combined across the lens in alternating condensed circles.
A “Smart lens” comes into the picture as well. This is caused by a condition called Presbyopia. Google and Novartis are developing smart lenses while Novartis indicated that the use of technologies such as non-invasive sensors and microchips in the lens can “provide welcoming vision correction” to restore the focusing capacity of the eye.