What is astigmatism?
Deviation (astigmatism) is a common problem that can cause blur or blurred vision regardless of distance. Astigmatism may affect people of any age, and at the same time, people with astigmatism also suffer from nearsightedness or farsightedness. Nearly half of those in the UK wear glasses with astigmatism to correct their vision.
What causes deviation?
Astigmatism occurs when there is no round but oval surface of the eye (cornea) or lens behind it like a rugby ball. This means that the light reaching the eye is not sufficiently focused on the retina and that the picture is blurred.
What are its symptoms ?
If you try to focus on distant things like road signs and you can’t see well, you should know that this could be astigmatism, which leads to blurred vision. It can also impair your vision while doing close-up activities such as reading or sewing. Astigmatism can lead to headaches, fatigue, around the eyes, and blurred vision if left uncorrected.
What types of astigmatism?
This occurs when the cornea curves more than the other in one direction. This type is the most common form of astigmatism and can be easily corrected using Toric glasses or contact lenses.
It is considered less common and occurs when the curvature of the cornea is irregular. Astigmatism may result from eye injury and corneal damage, or from a condition such as keratoconus, a progressive condition in which the central cornea becomes thinner and irregular. Since the condition can not generally be fixed with glasses, but can be corrected using special contact lenses.
How can astigmatism be corrected?
If you suffer from astigmatism frequently, do not worry, you can easily correct Toric glasses or contact lenses. Contact lenses compensate for differences in the shape of the human eye and thus allow light to better focus on the retina in the case of astigmatism. By treating astigmatism, at the same time, Toric lenses can also overcome myopia and nearsightedness.
What is myopia?
One of the most common vision problems, people with nearsightedness can see nearby objects more clearly than distant objects. Farsightedness usually results from the length of the eye’s body.
The irregular shape of the eye allows light rays entering the eye to focus in front of the retina rather than directly forming it. As a result, images of distant objects tend to be blurred. The severity of myopia varies from person to person and can become an obstacle to daily activities.
It can be difficult for people with myopia to meet friends from afar, drive safely, or watch a movie. Most people use glasses or contact lenses to manage their disease, which helps refocus light and make things clearer. Implantation of EVO lenses is a great option for correcting myopia for those looking for a permanent solution.
What is farsightedness?
A common term that describes the blurry vision of nearby objects and objects, but is clearly visible to distant objects and objects.
There may be a problem watching TV, but on highways there will be no problem reading the signs. Farsightedness involves a clear view of distant beings and objects, since it is just the opposite of myopia.
What causes hyperopia?
For several reasons, farsightedness can occur, but heredity is likely to be the main cause.
If you are farsighted (you have farsightedness), the light that enters the pupil does not focus directly on the retina, as this can happen because the eye length is shorter than usual, so it is behind the retina, objects and images are slightly distorted. It makes the newspaper look blurry when looking at it, while anything distant can look good and clear.
What is the difference between myopia, hyperopia, and astigmatism?
Myopia is that the patient is able to see things near the eye and unable to see anything distant, which is caused by the large length of the eye, or that the surface of the cornea is more convex.
As far as farsightedness is concerned, the patient can see things remotely better than objects in close proximity to the eye and also cause birth defects or genetic defects because the eye length is less than 23 mm or the surface of the cornea is less convex.
Finally, astigmatism is raster, where astigmatism can be in the form of nearsightedness or farsightedness, leading to imbalances in corneal roundness and regular headaches in some cases.