What are the symptoms of astigmatism?
Astigmatism is a common vision problem that is often caused by an irregular shape of the cornea or lens. It causes light to fail to focus properly on the retina, affecting vision clarity. Below is structured data on common symptoms of astigmatism and information about them.
1. The main symptoms of astigmatism
| Symptoms | Description |
|---|---|
| blurred vision | Whether you are looking at something close or far away, blurring may occur. |
| eyestrain | It is easy for your eyes to feel sore and tired after using them for a long time. |
| headache | Headaches may occur due to over-accommodation of the eyes, especially in the forehead area. |
| Decreased night vision | Vision problems may be more noticeable in low-light environments. |
| double image | Double images or shadows may appear when looking at objects. |
2. Classification of astigmatism
Astigmatism can be divided into the following types based on its causes and manifestations:
| Type | Features |
|---|---|
| regular astigmatism | The curvature of the cornea or lens is irregular, but has a certain regularity. |
| Irregular astigmatism | The surface of the cornea is uneven, usually caused by trauma or disease. |
| myopia astigmatism | Astigmatism and myopia coexist, making distant objects blurred. |
| farsightedness astigmatism | Astigmatism and farsightedness coexist, making near objects blurry. |
3. Diagnosis and treatment of astigmatism
Diagnosis of astigmatism usually requires professional eye examinations, including vision tests, corneal topography, etc. The following are common treatments:
| Treatment | Description |
|---|---|
| Wear glasses | Correct vision with custom astigmatic lenses. |
| contact lenses | Specially designed contact lenses can improve astigmatism. |
| Orthokeratology | Special contact lenses are worn at night to temporarily change the shape of the cornea. |
| laser surgery | Correcting the curvature of the cornea through laser surgery, such as LASIK. |
4. How to prevent astigmatism from getting worse
Although astigmatism is mostly caused by congenital factors, the following measures can help reduce symptoms or prevent worsening:
| Precautions | Specific methods |
|---|---|
| Proper use of eyes | Avoid staring at a screen or book for long periods of time and take breaks every 20 minutes. |
| maintain good posture | Maintain an appropriate distance and angle when reading or working. |
| balanced diet | Eat more foods rich in vitamins A, C, and E, such as carrots, blueberries, etc. |
| Regular inspection | Get an annual eye exam to detect and correct vision problems promptly. |
5. The difference between astigmatism and other vision problems
Astigmatism is often confused with myopia and hyperopia. Here are their differences:
| vision problems | Main symptoms | Cause |
|---|---|---|
| astigmatism | Objects near and far are blurred, and ghosting may occur. | Irregular cornea or lens |
| Myopia | Objects in the distance are blurry and near objects are clear | The eyeball is too long or the cornea is too curved |
| Farsightedness | Nearby objects are blurry, but distant objects are relatively clear | The eyeball is too short or the cornea is too flat |
Summary
Astigmatism is a common vision problem that mainly manifests as blurred vision, eye fatigue, headaches and other symptoms. Astigmatism can be effectively improved with professional eye exams and appropriate treatments. In daily life, proper eye use and regular examinations are the keys to preventing astigmatism from getting worse. If you have the above symptoms, it is recommended to consult an ophthalmologist as soon as possible to obtain an accurate diagnosis and treatment plan.
check the details
check the details
en
