Clearer Vision when you Wake-Up!
Contact lenses have been adapted as a substitute for spectacles worldwide. Over 155 million people have chosen contact lenses over spectacles because of their ease of use and the convenience it offers you. Contact lenses are preferred over prescribed glasses mainly because they provide you with a better, more accurate peripheral vision since they don’t contract moisture through rain, snow, condensation, etc. which may lead to the rupturing of the lens since they’re delicate.
Lenses have been adopted by people due to aesthetical and cosmetical reasons while some use them to avoid the heavy glasses on their face all the time since lenses are lightweight and provide better ocular relaxation. Some also make use of lenses for therapeutic purposes such as using the scleral lens because their cornea is too sensitive for normal contact lenses. Essentially lenses are of three types which are soft contact lenses, rigid gas permeable contact lenses, and hybrid lenses.
Why are monthly disposable contact lenses a better choice?
Due to the increasing shift and opting of contact lenses over spectacles, the contact lens manufacturers have also made few experiments with the production of these lenses by differing their usage duration.
Monthly disposable contact lenses have been introduced alongside, single-day usage contact lenses. Single-day contact lenses are not made up of materials the can withstand a larger amount of exposure to air and light, therefore they need to be removed before sleeping.
Whereas monthly disposable contact lenses provide you with continuous usage of these lenses even while sleeping i.e overnight. The use of silicone hydrogels allows the lenses to be worn for a continuous period due to the higher oxygen permeability they provide.
Normally, single-day usage lenses are exposed to normal air which has oxygen that dissolves and seeps through the lenses in the form of tears, whereas when asleep the supply of oxygen is done by the inner side of the cornea.
Overnight usage of these lenses may lead to blockade in the cornea resulting in a corneal ulcer. Therefore it is advised to dispose of the contact lenses at the right time and not overuse them.