Astigmatism is a common vision condition that affects the way your eyes focus light. Unlike nearsightedness or farsightedness, which are caused by the shape of the eyeball, astigmatism is typically caused by an irregularly shaped cornea or lens. This irregular shape can distort and blur your vision, making it difficult to see clearly at any distance.
Astigmatism occurs when the cornea or lens of your eye has an irregular, asymmetrical shape. Instead of the smooth, round curve that allows light to focus properly on the retina at the back of your eye, an astigmatic eye has a more oblong or football-shaped curve. This distorts the way light enters the eye, causing blurred or distorted vision.
Astigmatism is often present from birth, but it can also develop later in life due to factors like eye injuries, certain eye diseases, or even the natural aging process. The degree of astigmatism can range from mild to severe, and it often occurs alongside other refractive errors like nearsightedness or farsightedness.
Astigmatism can cause a variety of vision-related symptoms, including:
Blurred or distorted vision at all distances
Difficulty seeing clearly at night or in low light conditions
Frequent headaches or eye strain
Sensitivity to glare or bright lights
Difficulty reading or performing close-up tasks
The severity of these symptoms can vary depending on the degree of astigmatism and whether it is present alongside other refractive errors.
Astigmatism is typically diagnosed during a comprehensive eye exam by an optometrist. During the exam, they will use specialized instruments and techniques to measure the curvature of your cornea and lens, as well as the overall refractive power of your eyes. Some of the tests commonly used to diagnose astigmatism include:
Keratometry: This test measures the curvature of the cornea, which can reveal any irregularities or asymmetrical shapes.
Refraction test: This test determines the precise refractive error in your eyes, including any astigmatism.
Slit-lamp examination: This allows the eye doctor to closely examine the structure and health of your cornea, lens, and other eye components.
Computerized corneal mapping: This advanced imaging technique creates a detailed map of the cornea's shape and surface.
Based on the results of these tests, your optometrist can determine the type and severity of your astigmatism, as well as the best course of treatment to correct your vision.
When it comes to correcting astigmatism, eyeglasses and contact lenses are often the most accessible and commonly used options. These corrective lenses work by counteracting the irregular curvature of the cornea or lens, allowing light to focus properly on the retina.
Eyeglasses for astigmatism typically feature cylindrical lenses that are designed to compensate for the distorted light entering the eye. Contact lenses for astigmatism come in a variety of specialized designs, including:
Toric contact lenses: These lenses have a unique shape that allows them to rotate and align with the astigmatic curvature of the eye.
Multifocal toric contact lenses: These lenses combine the astigmatism correction of toric lenses with the added benefit of correcting presbyopia, a common age-related vision issue.
Hybrid contact lenses: These lenses feature a rigid, gas-permeable center surrounded by a soft, flexible outer ring, providing both astigmatism correction and comfort.
When choosing the right corrective lenses for your astigmatism, it's important to work closely with your optometrist to find the solution that best meets your individual needs and preferences.
For those who prefer a more permanent solution to their astigmatism, refractive surgery can be a highly effective option. These laser-based procedures work by reshaping the cornea, the clear, curved front part of the eye, to correct the irregular curvature that causes astigmatism. The most common refractive surgery for astigmatism is LASIK. During this procedure, the surgeon uses a specialized laser to remove microscopic amounts of corneal tissue, effectively flattening or steepening the cornea as needed to correct the astigmatism.
At The Eye Man, we are dedicated to providing comprehensive, personalized care for individuals with astigmatism and other vision issues. We understand that every patient's needs are unique, and we work closely with you to develop a tailored treatment plan that addresses your specific concerns and goals.
We utilize the latest diagnostic equipment and techniques to accurately identify the type and severity of your astigmatism, as well as any other refractive errors or underlying eye health conditions. Based on the results of your eye exam, we'll work with you to determine the most effective treatment options, whether that's corrective lenses, refractive surgery, or a combination of therapies.
Astigmatism is a common vision condition that can significantly impact your daily life, but with the right treatment and care, you can take control of your vision and enjoy clear, comfortable sight. Whether you opt for corrective lenses, refractive surgery, or a combination of therapies, the key is to work closely with an experienced eye care provider like The Eye Man to develop a personalized plan that addresses your unique needs.
At The Eye Man, we are dedicated to helping you achieve the clear, comfortable vision you deserve. Visit our office in New York, New York, or call (212) 873-4114 to schedule an appointment with us today to take the first step towards taking control of your astigmatism and improving your overall eye health.