Do I need to lower the astigmatism power of customized contact lenses a little? My astigmatism is on

1. All of them are already highly myopic and have a high degree of astigmatism, so it is necessary to pay attention to it and wear appropriate glasses to correct it in time.

Also note:

1. The time of close eye use should not be too long, every 40-50 minutes, you should take a little rest for 3-5 minutes, and look into the distance to relieve visual fatigue.

2. Read and write, play with the computer, maintain a correct posture, the height of the table and chair should be appropriate, and the distance between the eyes and the reading materials should be about 33 cm.

3. Mix whole grains, meat and vegetables, eat more vegetables and fruits, and don't eat partially. Lack of vitamins in food is prone to night blindness and dry eye disease, and lack of trace elements chromium and calcium in food makes it easy to suffer from myopia. In addition, it is also necessary to pay attention to regular supplementation of eye vision nutrients, not from the nutrients required by the eyes, enhance the anti-fatigue ability of the eyes, and better protect the eyesight.

Fourth, when reading and writing, the light should be moderate, not too strong or too dark, and the light should come from the left front, so as not to obstruct the vision of the hand shadow. The light should be soft, if it is incandescent, it should be between 25 and 40W, and it is not recommended to read in the sun. Because the intensity of light has a direct impact on pupil dilation, too strong light will increase the intensity of eye accommodation, aggravate the intensity of eye labor, and it is easy to cause myopia after a long time.

Generally, desktop lamps should be less than 40 watts.

5. Avoid reading while walking or reading in a walking car. Because the carriage is shaking, the body is shaking, and the distance between the eyes and the book cannot be fixed, the burden on the glasses will increase. Often, this is likely to lead to myopia.

6. Actively participate in physical exercise to enhance physical fitness. As the eyeball follows the target, the ciliary muscles continue to relax and contract, and the synergistic effect of the extraocular muscles can increase the blood perfusion of the eye, promote the metabolism of the eye, and thus reduce eye fatigue. Moreover, the quality of physical fitness is also closely related to the occurrence of myopia in children.

Malnourished and weak children are prone to myopia.

7. Insist on doing proper eye exercises. By massaging the acupuncture points around the eyes to enhance the blood circulation of the eye socket, improve neuronutrition, eliminate the excessive congestion in the eye, and achieve the purpose of relieving eye fatigue, it is conducive to the prevention and treatment of pseudomyopia in adolescents, and is a good way for adolescents to self-care their eyes.

8. Eat less candy and high-sugar foods. Too much sugar will produce a large amount of acidic substances in the blood, and the acid will combine with the salt in the body, especially calcium, resulting in a decrease in blood calcium, which will affect the toughness of the eye wall, make the eye axis easy to elongate, and promote the occurrence and development of myopia.

If your astigmatism is too high, it is generally recommended to be fitted with glasses below 150 degrees, and it is recommended to wear special astigmatism lenses for astigmatism above 200 degrees.

Patients with astigmatism have a number of requirements for recessive glasses. When there is a spherical lens and astigmatism: 1

For those with less astigmatism, the power of the spherical lens is required to be more than 3 times the degree of astigmatism, such as astigmatism, and the degree of myopia must be above degree. 2.For those with astigmatism or above, the spherical power is required to be more than 4 times the astigmatism, such as astigmatism, and its myopia must reach or above.

When corneal astigmatism is exceeded, ordinary contact lenses are not suitable, and circumflex contact lenses (customized astigmatism lenses) or rigid contact lenses are recommended. The recessive conforming to the proportion is calculated by the following formula: drecessive d-frame (1 frame).

Because the power of your right eye is not proportional, it is not suitable for ordinary recessiveness. If you have to convert, then your right eye is degrees, and your left eye is degrees.

Now the implicit process is relatively mature, and there are few problems with large degree errors.

There is a detailed description of my space, and you can go to my space to view it if you need to.

Then you choose 450 + 125 2 = 500-25 = 475 degrees for your left eye and 550 + 100 2 = 600-50 = 550 degrees for your right eye.