Astigmatism is a common refractive error of the eye that occurs when the cornea or lens has an irregular shape. This irregularity prevents light from focusing evenly on the retina, leading to blurred or distorted vision at all distances. People with astigmatism may experience difficulty seeing clearly, especially at night, and may have trouble with tasks requiring sharp vision.
Understanding astigmatism is important for overall eye health. If left uncorrected, it can affect daily activities such as reading, driving, and watching television. Poor vision due to astigmatism can lead to eye strain and discomfort, making it harder to focus on tasks. Addressing astigmatism through corrective lenses or other methods can significantly improve visual clarity and quality of life.
The eye functions like a camera, where light enters through the cornea and lens and is focused on the retina at the back of the eye. In a healthy eye, this light is focused precisely, resulting in clear vision. However, in someone with astigmatism, the uneven shape causes light to focus at multiple points, leading to blurry vision. This condition can occur in combination with other vision issues, making comprehensive eye examinations essential for proper diagnosis.
Astigmatism is typically diagnosed during a routine eye exam. Many people have some degree of astigmatism, and it can occur at any age. Regular eye check-ups can help detect the condition early and ensure appropriate correction, helping to maintain good vision and overall eye health.