Astigmatism is a term that many people have come across, and some may even have been diagnosed with it. However, the specifics of this prevalent eye condition might still be unclear. Astigmatism affects approximately one-third of the population, with about 70% of eyeglass and contact lens prescriptions including a correction for astigmatism.
Understanding Astigmatism
Astigmatism is a prevalent refractive error that affects the eye. It occurs when the cornea, the transparent front surface of the eye, has an irregular shape, resembling that of an egg rather than a more spherical shape. Due to this irregularity, light entering the eye is not focused evenly onto the retina, the light-sensitive tissue at the back of the eye responsible for transmitting visual signals to the brain. Consequently, this uneven focusing results in distorted or blurred images being perceived by the brain.
What are the Symptoms of Astigmatism?
Astigmatism can manifest in various symptoms. While some individuals may have astigmatism from birth, it may not initially cause any problems. In such cases, optometrists often mention the condition without prescribing treatment or adjusting the prescription. However, when symptoms do appear, the most common one is blurry or distorted vision. Additionally, individuals with astigmatism may experience eyestrain, discomfort, and headaches if they do not receive corrective treatment. They may also find themselves squinting in an attempt to see more clearly, and their night vision may be worse than average. It is worth noting that astigmatism often occurs alongside other vision issues, such as myopia, which can lead to confusion regarding the symptoms of this condition.