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 you already wear glasses or contact lenses.

Can astigmatism worsen over time?

Yes, especially if neglected or not properly corrected.

Astigmatism Diagnosis: Exams, Tests and Signs Not to Ignore

Astigmatism Diagnosis

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 you have 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 eye's visual ability, measures visual acuity, and checks for asymmetric blurriness typical of astigmatism.

Tests Used for Diagnosis

Visual Acuity Test: allows assessment of vision clarity at different distances.
Keratometrie: measures the curvature of the cornea to detect irregularities.
Corneal Topography: creates a 3D map of the cornea's surface to highlight deformations.
Phoropter and Retinoscopy: instruments to determine the type and extent of the visual defect.

The 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 the defect from worsening.

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 forehead area after reading or using a computer

Continue Reading

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 you already wear glasses or contact lenses.
Can astigmatism worsen over time?
Yes, especially if neglected or not properly corrected.

Cart