- Medically Reviewed by Mr Mfazo Hove Consultant Ophthalmologist
- Author: Chris Dunnington
- Published: September 23, 2024
- Last Updated: December 12, 2025
What is Astigmatism?
Astigmatism is a common eye condition causing blurred or distorted vision due to an irregularly shaped cornea or lens. Normally, the cornea is smooth and spherical, but astigmatism occurs when it resembles a rugby ball shape, preventing light from focusing properly on the retina. This irregularity causes vision to be unclear at all distances, affecting day-to-day activities such as reading, driving, and working on screens, often accompanied by symptoms like headaches, eye strain, and squinting.
Infographic: What is astigmatism?
Symptoms of Astigmatism
Astigmatism can reveal itself through a variety of symptoms, which often prompt patients to seek professional advice. Typical signs include:
- Blurred vision at all distances, where objects may appear distorted or unclear.
- Headaches that arise frequently due to eye strain.
- Squinting in an attempt to focus or see more clearly.
- Eye fatigue after prolonged reading, screen use, or other visual tasks.
- Eye strain, leading to discomfort during concentrated visual work.
- Difficulty seeing at night, particularly noticeable when driving in low-light conditions.
If any of these symptoms occur regularly, it is vital to schedule an eye exam for an accurate diagnosis and to ensure safe vision, especially for activities such as driving.
Causes of Astigmatism
Astigmatism is largely hereditary and linked to genetic factors, but several other causes are recognised:
- Genetic inheritance: Many people are born with astigmatism, especially premature or low birth weight infants.
- Developmental changes: The shape of the cornea can evolve during childhood and adolescence, leading to astigmatism.
- Keratoconus: A progressive disease that thins the cornea, causing it to bulge into a cone shape.
- Eye surgery: Procedures like cataract surgery can change corneal shape, resulting in astigmatism.
- Eye injury: Trauma can cause scarring and irregularities in the cornea.
- Improper contact lens usage: Incorrect or prolonged use of rigid contact lenses can temporarily affect corneal shape.
Types of Astigmatism
Understanding the types of astigmatism helps in selecting the most effective treatment:
- Corneal astigmatism: The cornea itself has an irregular shape, resembling a rugby ball.
- Lenticular astigmatism: The lens within the eye is irregularly shaped while the cornea remains normal.
- Myopic astigmatism: Nearsightedness in one or both principal meridians.
- Hyperopic astigmatism: Farsightedness in one or both principal meridians.
- Mixed astigmatism: A combination of myopic and hyperopic defects causing overall blurred vision.
Diagnosing Astigmatism
Diagnosis is achieved through a comprehensive eye exam by a specialist, which typically involves:
- A detailed review of your symptom history and medical background.
- Pre-test examinations to assess eye health.
- Refraction assessments to evaluate the precise shape and focusing power of the eyes.
- Advanced corneal topography or tomography to map the corneal surface.
This thorough evaluation ensures a precise diagnosis and allows eye specialists to tailor an effective treatment plan to your individual needs. Our free online astigmatism test can help you identify potential signs of this condition.
Treatment for Astigmatism at Blue Fin Vision®
At Blue Fin Vision®, a leading private eye clinic with centres in London, Chelmsford, and Hatfield, expert care is provided by top doctors and leading surgeons, using state-of-the-art technology to treat astigmatism. Treatment depends on the severity and individual needs but typically includes:
- Glasses and Toric Contact Lenses: Prescribed specially designed toric lenses compensate for the irregular corneal shape, providing clearer vision.
- Laser Eye Surgery: This advanced approach reshapes the cornea safely and precisely, offering a long-term solution that often frees patients from glasses and contacts. Blue Fin Vision® utilises the latest laser technology, combined with expert surgical skill, ensuring excellent outcomes for astigmatism correction.
- Lens Replacement Surgery (Toric Lenses): Also known as refractive lens exchange, this procedure replaces the natural lens with a premium intraocular lens (IOL) that corrects astigmatism along with other refractive errors like myopia or hyperopia. Blue Fin Vision® surgeons use premium Zeiss toric lenses designed for exceptional clarity and durability.
- Implantable Collamer Lens (ICL) Surgery (Toric Lenses): Ideal for patients unsuitable for laser surgery, ICL involves inserting a biocompatible lens between the iris and natural lens. This advanced procedure at Blue Fin Vision® uses AI-powered precision for customised lens fitting and delivers rapid visual improvement, often within 24 hours. The clinic’s commitment to personalised care includes lifetime monitoring to safeguard eye health after ICL surgery.
Why Choose Blue Fin Vision® for Astigmatism Treatment?
Blue Fin Vision® sets the standard for eye care across London, Essex, and Hertfordshire, offering exceptional expertise and a patient-focused experience:
- Top specialists and leading surgeons: Patients are treated by highly experienced ophthalmologists recognised nationally for their skill.
- Cutting-edge technology: Advanced diagnostics including Pentacam corneal mapping, OCT imaging, and AI-assisted surgical planning ensure precise, customised treatment.
- Comprehensive, personalised care: From initial consultation through surgery and follow-up, care plans are tailored to your unique needs and lifestyle.
- Multiple convenient locations: Clinics in London’s prestigious Harley Street, Chelmsford, Hatfield, and North London provide accessible, uniform care standards.
- Strong reputation and patient trust: Blue Fin Vision® is a Top Recommended practice, celebrated for excellent outcomes and compassionate service.
Take Control of Your Vision
Living with astigmatism need not limit your quality of life. Whether your condition is mild or more complex, Blue Fin Vision® offers sophisticated solutions to restore clear, comfortable vision. Their expert team is ready to guide you through every step, from diagnosis to personalised treatment, including lens replacement surgery with toric lenses, ICL surgery, or laser eye correction.
Entrust your precious vision to Blue Fin Vision®, where advanced technology meets unparalleled expertise and empathetic care.
Book a consultation at the clinic most convenient for you in London, Chelmsford, or Hatfield today, and take the first step toward visual freedom and a life without compromise.
