What is astigmatism and what is astigmatism

Astigmatism can cause vision loss, blurred vision, visual fatigue and other conditions, and naturally such a situation for a long time will also cause the eyes to look dull.

Astigmatism is a refractive abnormality of the eye that is related to the curvature of the cornea. Some people have a curved cornea in one angle and flatter in others. The cause of astigmatism is that the refractive rate of each meridian of the cornea is inconsistent due to the uneven thickness of the cornea or the uneven curvature of the cornea, so that the light rays passing through these meridians cannot be concentrated at the same focus, and the light rays cannot be accurately focused on the retina to form a clear image, which is called astigmatism.

Astigmatism simply means that the development of the eyeball is not good, and there is a phenomenon of unevenness. And now there are more and more people with astigmatism, and eye astigmatism is directly related to the serious lack of vision nutrients, and the idea of closing the shed is a bad eye habit.

Eye astigmatism first needs to be supplemented with vision nutrients in time, it is recommended to take Joy Vision Nutrients, twice a day, one pack each time, take it with warm water, insist on taking it for a period of time, and astigmatism will gradually be controlled or improved.

The other is to develop good eye habits.

1. Regular eye examination 1 2 times a year. Instruct young children to practice good hygiene and not to contact their eyes with their hands or chemicals. When reading, there should be plenty of light, preferably from the left rear; Correct posture and a distance between 30 cm and 40 cm.

2. When choosing reading materials, the font should be clear and not too small.

3. Watching TV must be 5 7 times the diagonal of the TV picture. Read a book for no more than one hour in a row. If you need glasses, you should be examined by a doctor and then dispensed with glasses.

What exactly is astigmatism in myopia?

Astigmatism is a relatively large concept, simply put, astigmatism is a refractive abnormality that causes the image of the object to enter the eye and form a projection on the retina, resulting in a refractive abnormality that the patient cannot see clearly.

Astigmatism is very common, everyone has a certain degree of astigmatism to a greater or lesser extent, but some people have a light degree of astigmatism and usually do not notice it.

Generally, patients with low-grade astigmatism, no vision loss and eye discomfort can be exempted from intervention; If there are uncomfortable symptoms such as vision loss or visual fatigue, various means can be used to intervene and correct.

The refractive power of the eyeball is different on different meridians, forming two focal lines and a minimum diffuse spot, which is called astigmatism. Astigmatism is mainly due to the cornea and lens, and can be divided into regular astigmatism and irregular astigmatism. Regular astigmatism means that the meridians with the maximum and minimum refractive power are perpendicular to each other.

Irregular astigmatism is when the meridians with the largest and smallest refractive power are not perpendicular to each other. Regular astigmatism is further divided into regular astigmatism, anti-regular astigmatism and oblique astigmatism. Normal people actually have a certain degree of astigmatism, and the general astigmatism is within 75 degrees.

Regular astigmatism does not affect the vision of most people, but large degree, irregular, retrograde and oblique astigmatism will affect the vision of normal people, and will cause patients to have symptoms such as double vision and blurred vision, which can cause refractive error amblyopia.