Diagnosis of Astigmatism: Exams, Tests, and Signs Not to Ignore

Diagnosis of Astigmatism

When to Suspect Astigmatism

Astigmatism can go unnoticed for years. The most common symptoms — distorted vision, frequent headaches, difficulty reading — can be mistaken for fatigue or general vision problems. For this reason, it is essential to undergo regular check-ups, especially if there is a family history of visual defects.

Optometric Visit: The First Step

The first step in diagnosing astigmatism is visiting a specialized optical center. The optometrist evaluates the visual capability of the eye, measures visual acuity, and checks for the presence of asymmetric blurriness typical of astigmatism.

Tests Used for Diagnosis

• Visual Acuity Test: assesses the sharpness of vision at different distances.
• Keratometria: measures the curvature of the cornea to detect irregularities.
• Corneal Topography: creates a 3D map of the corneal surface to highlight deformities.
• Phoropter and Retinoscopy: tools to determine the type and extent of the visual defect.

Importance of Early Diagnosis

Diagnosing astigmatism promptly is essential to avoid complications such as amblyopia (lazy eye), especially in children. Early correction improves quality of life, reduces visual fatigue, and prevents worsening of the defect.

Self-Diagnosis: Signs to Observe

Although only a professional can diagnose astigmatism, some signs may suggest its presence:

• Confusion between similar letters (like H and M, B and D)
• Constant need to squint to focus
• Localized headaches in the frontal area after reading or using a computer

Continue Reading

• What is Astigmatism
• Causes of Astigmatism
• Solutions for Astigmatism

FAQ

• How is astigmatism measured?
  With optical instruments such as keratometers and corneal topographers that detect the curvature of the eye.
• How often is it recommended to have an eye exam?
  At least once a year, or every 6 months if already wearing glasses or lenses.
• Can astigmatism worsen over time?
  Yes, especially if neglected or not properly corrected.