How to do astigmatism to assist in the examination Preventive measures for astigmatism

In daily life, there are many people who will have astigmatism, which directly and seriously affects their health. You need to pay attention to the occurrence of this situation, and pay attention to the treatment, if there is astigmatism, what tests should be done? Let's find out with the editor!

Ancillary tests for astigmatism

One of the tests: dilated refraction. A small number of adolescents with high astigmatism can be treated with 1% atropine eye drops or ointment to dilate the pupils, and various astigmatism properties can be detected during examination.

Examination 2: Vision examination. Astigmatism can be detected by examination of distance and near vision. Patients with severe astigmatism have poor distance and near vision.

Inspection 3: Astigmatism table inspection. There are many radial streaks on the astigmatism table, and if the person being examined feels that the streaks of a certain meridian are not clear during the examination, it means that there is astigmatism.

Examination 4: Diopter examination. Astigmatism can be diagnosed by refraction, which is the most commonly used method of diagnosing astigmatism.

Examination 5: Corneal curvature examination. Examination by keratometer shows that the surface of the cornea does not bend in the same meridian direction.

Examination 6: Corneal topography examination. The curvature of the cornea and the smoothness of the corneal surface can also be checked and documented, and irregular astigmatism can be detected.

Which astigmatism is suitable for refractive surgery

Astigmatism caused by cataract surgery

Partial astigmatism is caused by an incision dehiscence after cataract surgery. In such patients, wound repair should be considered first. If the eye is structurally intact after surgery, refractive surgery to reduce anisometropia is even more important, and the choice of astigmatic keratotomy or laser astigmatic refractive keratotomy is appropriate.

Those with more than 1 diopter

In patients with astigmatism over 1 diopter, vision can be significantly affected. Surgery may also be considered in these patients.Patients who do not tolerate glasses or contact lenses may also be considered for refractive surgery if they do not want to use glasses or contact lenses. However, correcting astigmatism with refractive surgery is much more difficult than treating nearsightedness or farsightedness. Astigmatism caused by ophthalmic surgery is most important to correct with refractive surgery.

Astigmatism after corneal transplantation

Astigmatism is often caused after corneal transplantation, which is often difficult to tolerate in patients with glasses or contact lenses, so refractive surgery is also necessary for these patients. Astigmatism may be irregular and can be difficult to correct surgically. Complete correction is ideal, but if it is difficult, surgery to reduce the degree of astigmatism so that the patient can wear glasses or contact lenses to correct residual astigmatism.

A common prevention of astigmatism

1. Don't blow the air conditioner for too long, avoid air flow blowing through the seat, and place tea near the seat to increase the humidity around the seat.

2. Don't take your eyes off the eyes, pay attention to frequent and complete blinking movements, blinking frequently can reduce the time your eyes are exposed to the air and avoid tears evaporation.

3. Eat more fruits, especially citrus fruits, and eat more green vegetables, grains, fish and eggs.Drinking plenty of water can also help reduce dry eyes. Operate continuously for 1 hour with a 5-10 minute break. When resting, you can look into the distance or do eye exercises.

5. Maintain a good working posture. Maintaining an optimal posture with both eyes at eye level or slightly downward at the phosphor screen will ease the neck muscles and minimize the area of the eyeball exposed to air.

6. Adjust the distance of the phosphor screen. The recommended distance is 50-70 cm, while the phosphor screen should be slightly 10-20 cm below the eye level, with a downward viewing angle of 15-20 degrees. This reduces the need for refraction and reduces the chance of eye strain.