"What Causes Astigmatism?"
Update Date:
Source: Network
Astigmatism can be caused by either congenital or acquired factors. It is recommended that patients promptly seek medical attention and receive targeted treatment under the guidance of a doctor.
Congenital Factors
- Uneven Corneal Curvature: If the refractive index varies along the meridians of the ocular refractive system during embryonic development, light incident on the retina will not form a single focal point but two focal lines, a condition known as regular astigmatism. This type of astigmatism is often caused by uneven corneal curvature, a congenital condition that typically does not require special treatment.
- Lens or Vitreous Humor Opacification: With age, the lens gradually hardens and becomes cloudy, leading to opacity in the lens or vitreous humor, which can impact vision and even induce astigmatism. Regular hospital visits for check-ups are necessary, along with maintaining proper eye hygiene and avoiding rubbing the eyes with hands.
Acquired Factors
- Trauma: Eye trauma from external impacts can damage the cornea or lens, resulting in astigmatism. Correction can be achieved through wearing frame glasses or undergoing laser surgery.
- Prolonged Use of Electronic Devices: Prolonged viewing of mobile phones or computers can cause the ciliary muscle to remain in a spastic state, affecting normal ocular muscle regulation and increasing the risk of astigmatism. It is crucial to adjust daily routines, ensure adequate sleep, and avoid staying up late.
In addition, factors such as myopia may also be involved. It is advisable for patients to seek timely medical diagnosis and treatment.
