An Explanation Of Correction Of Eye Defects

Vision problems are common. In fact, they are so common that around 2.2 billion people globally have at least one kind of eye defect. Whether it’s myopia or hypermetropia, people of different ages have these eye defects.

In most cases, eye defects like myopia or hypermetropia are cured by vision correctness in the form of glasses or eye lenses. However, in some cases, there’s a need for a specialist to correct your vision.

In this article, we will be learning more about the defects of an eye and how to correct these defects.

The most common eye defects

While eye defects are common, they are still hard to recognize until daily tasks and activities become difficult. Eye defects usually happen due to the disability of the ciliary muscles. The ciliary muscles are responsible for forming and changing the shapes of the eye lens. Due to their disability, the image formation of an object in the retina doesn’t take place properly, leading to different eye defects.

The two most common types of eye defects in humans are:

• Myopia
• Hypermetropia

Understanding Myopia

Myopia is nearsightedness in the human eye. When a person can’t see distant objects clearly until they are kept close, it means the person has myopia. Myopia (or short-sightedness) could be caused because of two common reasons:

• Eyeball elongation, or
• High converging power of the lens

Because the eyeball gets elongated too much, the retina of the eye gets distant from the lens of the eye, causing myopia in the eye. In the same way, because of the high convergence of the eye lens, the images and objects at a distance are not visible clearly to the human eye. 

Myopia is an eye defect that can develop even in childhood and cause more vision-related problems as the person grows up. Some of the common symptoms of myopia are eye strain, squinting, and headaches. Anybody with a more indoor-dominant lifestyle could have myopia. Myopia is growing more common because of the rigorous use of computer screens and the demanding lifestyle of students that have to read a lot.

Correction of Myopia

Myopia (or short-sightedness) is fixed by wearing spectacles that have a concave lens. Concave lenses have the ability to diverge the parallel light rays that come in from distant objects. This allows the formation of the virtual image at a distant point of the myopic eye. As the light rays now are at a proper distance, the objects are easily focused by the lens, which forms the image on the retina. And that’s how a concave lens treats myopia in the human eye as it decreases the converging power in an eye.

A myopic eye could also be treated with contact lenses. In some cases, it could even involve refractive surgeries that could potentially cure myopia for a person permanently.

Understanding Hypermetropia

Commonly known as far-sightedness, hypermetropia is the exact opposite of myopia. In this type of eye defect, the person is able to see objects at a distance clearly. However, the objects that are at a near distance aren’t visible clearly.

Hypermetropia is a condition that causes the formation of light rays behind the retina in an eye. It happens when the eyeball is shorter than usual, which ultimately focuses the images formed in such a spot that falls behind the retina.

Some of the common symptoms of hypermetropia include eye squinting, blurry vision, or regular headaches because of eyestrain. A person suffering from hypermetropia finds it hard to see nearby objects, making it hard to do things like using a phone or reading a book. The person usually has to squint his eyes to see nearby objects.

Correcting Hypermetropia

Hypermetropia could be cured using spectacles that have a convex lens. Convex lenses can impart the additional focusing power that’s required to form an image on the retina.

A hypermetropic eye could also be treated with converging contact lenses. Alternatively, hypermetropia could also be treated permanently with eye surgery. The surgical procedures could include laser eye surgeries or clear lens extraction as well.

Conclusion

Understanding the defects of one’s eyes and adopting the right solutions for the correction is important to have a healthy vision. We should take proper care of our eyes as they are one of the important organs we have for daily functioning.

If your lifestyle involves the frequent use of phones or computer screens, you can also use blue screens and specs that can protect you from radiation. It’s also ideal to get your eyes checked by a doctor every now and then so as to take proper care of them.