How does astigmatism affect your vision?
Astigmatism is an eye disease that affects the way light enters our eyes. If light passes through the eye through astigmatism, the light does not enter into a single eyecup inside the eye. Instead, the light arrives at two focal points; so it's harder to see fine details.
The leading symptom with astigmatism is blurred or distorted vision. Often, it will be difficult to diagnose yourself. This is because primary symptoms may be like Myopia (short-sightedness). So it's hard to distinguish. What distinguishes the astigmatism: the eyes of the eyes with small details. This can be near or far off objects.
Some additional symptoms in patients with astigmatism: excessive ejaculation and photosensitivity, permanent occipital deaths and continuous headaches.
There are typically two main reasons for astigmatism:
The first is Corneal Astigmatism. The cause leading to this type of astigmatism is the result of an irregular shaped cornea. The cornea is the front outer part of the eye. This clean membrane helps to protect the eye and is responsible for the inward target of light. The regular cornea has a circular shape, such as a basketball shape. This cornea only transmits an image to the retina. The retina is located at the back of the eye.
If we have an irregular shape cornea, then the cornea has a certain oblong shape similar to an oval shape. This affects the way the light goes through the eye. This means that a single image is projected out of light. Instead, it shoots two images; which makes it difficult for one eye to focus on the small details.
The second reason is Lenticular Astigmatism. In this case, astigmatism results in an irregular lens. This part of the eye is not on the outer surface but within the eye. Behind the iris. As in the case of corneal astigmatism, the irregular shape or incorrect position of the lens may cause an erroneous picture of the retina.
To determine whether astigmatism suffers, one of the following eye exams or combinations of these may be used by a healthcare professional:
- Test for visual acuity. This test is the most widespread and most commonly used eye exam where we ask you to read letters that are progressively moving from a map that is far away from it.
- Astigmatic Dialing. With this test, you can ask to write a series of lines in a semicircle called the astigmatic disc. If you have astigmatism, some lines will be clearer than others.
- Keratometer or ophthalmic device. It is a device that measures the amount of reflected light from the cornea surface. These measurements are used to determine the curvature radius of the cornea.
Astigmatism is regarded as a minor state of health and ophthalmologists usually require correction lenses to compensate for astigmatism. There is, however, another alternative. The following are four options for astigmatism:
- Corrective lenses
- Orto-keratology (a special rigid contact lens program)
- Laser Surgery
- Ophthalmic Exercises
learn more about these options in order to make a better decision on what you want. It is important to note that there are methods for correcting astigmatism.
- Published On : 3 months ago on March 6, 2018
- Author By : 346@dmin
- Last Updated : March 6, 2018 @ 9:49 pm
- In The Categories Of : Uncategorized