Contact lenses or also known as simply as the "Contact" are lens that are placed on the eyes. The moral idea of designing the contact lenses is to replace the numbered glasses that people used to wear for better vision.
History
If we go into history of contact lenses, the idea for lens was first presented by Leonardo Da Vinci where he described a method of directly altering the corneal power by submerging the eye in a bowl of water. However, he never suggested his idea further. Later many researchers did their research in creating the perfect lenses. However, amongst many the Adolf Gaston Eugen Fick was successful in constructing and fitting the first successful contact lens in 1887.
How Do Contact Lenses Work?
Contact lens is placed on the top of your cornea where there is constant supply of tears (water from eyes). They are also rested in a place where they are firmly hold from the pressure exerted from the eyelids. They contacts are driven away slightly and moved smoothly over the cornea when a person wearing the contact lenses blinks his / her yes. This reaction is caused due to the pressure from the eyelids in which the contacts are placed. The whole process allows the water between the eyes and lens to gently flush out the dust particles, which may have been accumulated itself in the eye.
This is how the contact lenses stay on the eye, and allows us to get a correct vision. However, the way that how the contacts are able to provide the correct vision, or perhaps what involves that allows them to provide the correct vision is a different story.
Contact lenses are prescribed by ophthalmologist (commonly known as eye specialists) to a wide range of individuals who have problems with their vision associated with near-sightedness, farsightedness, astigmatism and presbyopia. The individuals suffering from these conditions have problems with their retinas as a result they are not able to properly focus on the light. When the retinas are unable to focus properly on light then it results into improper or blurry vision.
Every pair of contact lenses is made differently and uniquely depending upon the condition of eye that they are trying to correct. For instance if a person is suffering from farsightedness than the ophthalmologist will measure the cornea and will design a specific lens that are made precisely to fit in his / her eye. In the end, a pair of this lenses is made that fits perfectly into one's eyes that direct light rays to the one place on the cornea, which ultimately corrects your vision.
History
If we go into history of contact lenses, the idea for lens was first presented by Leonardo Da Vinci where he described a method of directly altering the corneal power by submerging the eye in a bowl of water. However, he never suggested his idea further. Later many researchers did their research in creating the perfect lenses. However, amongst many the Adolf Gaston Eugen Fick was successful in constructing and fitting the first successful contact lens in 1887.
How Do Contact Lenses Work?
Contact lens is placed on the top of your cornea where there is constant supply of tears (water from eyes). They are also rested in a place where they are firmly hold from the pressure exerted from the eyelids. They contacts are driven away slightly and moved smoothly over the cornea when a person wearing the contact lenses blinks his / her yes. This reaction is caused due to the pressure from the eyelids in which the contacts are placed. The whole process allows the water between the eyes and lens to gently flush out the dust particles, which may have been accumulated itself in the eye.
This is how the contact lenses stay on the eye, and allows us to get a correct vision. However, the way that how the contacts are able to provide the correct vision, or perhaps what involves that allows them to provide the correct vision is a different story.
Contact lenses are prescribed by ophthalmologist (commonly known as eye specialists) to a wide range of individuals who have problems with their vision associated with near-sightedness, farsightedness, astigmatism and presbyopia. The individuals suffering from these conditions have problems with their retinas as a result they are not able to properly focus on the light. When the retinas are unable to focus properly on light then it results into improper or blurry vision.
Every pair of contact lenses is made differently and uniquely depending upon the condition of eye that they are trying to correct. For instance if a person is suffering from farsightedness than the ophthalmologist will measure the cornea and will design a specific lens that are made precisely to fit in his / her eye. In the end, a pair of this lenses is made that fits perfectly into one's eyes that direct light rays to the one place on the cornea, which ultimately corrects your vision.
