Contact Lens Research

Most Recent Articles

Presbyopia: Definition, Causes, & Symptoms

By Dr. Edwin R. Wallington | 08/01/2023

What is Presbyopia? Presbyopia is the gradual inability for the eye to focus that occurs as we age, due to loss of flexibility of the crystalline lens within the eye.  The lens is made of elastic proteins that give flexibility to the lens, but as we get older, the elastic proteins begin to lose their…

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Astigmatism: Definition, Causes, & Treatment

By Dr. Edwin R. Wallington | 08/01/2023

What is Astigmatism? Astigmatism is an optical condition of the eye that causes vision to be blurry when looking at things that are either far away or up close due to having multiple points of focus.  Other refractive error problems (such as nearsightedness and farsightedness) are caused by light being focused to ONE POINT either…

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What Is 20/20 Vision?

By Dr. Jeffery Gould | 08/01/2023

Almost everyone has heard of the numbers 20/20 when it comes to vision.  There’s even a commonly quoted phrase “hindsight is 20/20”.  But what is 20/20?  What does that even mean? How Vision Values Like “20/20” Are Measured Well, it’s really not as complicated as it seems.  The numbers are referring to a distance of…

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What Does “Power” or “PWR” Mean in a Contact Lens Prescription?

By Dr. Edwin R. Wallington | 07/17/2023

In order for us to see, light enters the eye through the cornea, goes through the pupil, and then must focus perfectly on a single pinpoint spot on the retina in the back of the eye called the fovea.  If light does not focus on the fovea, then that eye is “uncorrected” and the point…

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Extended Wear Contact Lenses

By Dr. Edwin R. Wallington | 06/24/2023

Contact lenses are a safe form of vision correction, as long as all of the rules of engagement are followed. Once you start breaking the rules, the risks of irritation, damage, and vision loss begin to climb.  One of the rules that many doctors give to their patients is this:  “DO NOT SLEEP, NAP, OR…

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How Do Contact Lenses Work?

By Dr. Edwin R. Wallington | 06/21/2023

Before we dive into how contacts work, let’s first establish how your eyes work. Contact lenses aim to correct the way that light enters your eyes so you can focus and see clearly. Ideally, this is how vision occurs. The light that meets your eyes: When light does not focus properly on the fovea, the…

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How Does Astigmatism Affect Night Vision & Driving?

By Dr. Edwin R. Wallington | 06/09/2023

How Does Astigmatism Impact the Perception of Light? When light enters the eye, it is supposed to converge to focus at a pinpoint spot on the retina called the fovea. Astigmatism occurs when, instead of one point of focus, there are two separate points of focus in the back of one eye. This can create…

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Science and Technology Behind Daily Disposable Contact Lenses

By Dr. Edwin R. Wallington | 04/07/2023

Contact lenses have come a long way since their invention in the late 1800s. Today, one of the most popular types of contact lenses on the market are daily disposable lenses. These lenses are designed to be worn for a single day before being thrown away and replaced with a fresh pair. In this article,…

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What is Orthokeratology?

By Dr. Edwin R. Wallington | 04/05/2023

Orthokeratology Defined Orthokeratology (OrthoK) is the optometric practice of using rigid contact lenses to alter the shape of the cornea while you sleep, so that a myopic (nearsighted) eye will have temporary improved optics during waking hours. More recently, OrthoK has been linked to the reduction of axial length growth in children and is now…

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What is SMILE Eye Surgery?

By Dr. Jeffery Gould | 03/14/2023

As vision correction technology improves, people struggling with vision issues have more options to consider.  Of course there are glasses as a standard option, which can be used to correct a wide variety of vision issues, as well as contact lenses that are advancing at a rapid pace in terms of their comfortability, technology, and…

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