R R

How Many People Experience Vision Changes During Pregnancy?

Uncorrected astigmatism is a widespread vision problem among the working population. While overall prevalence estimates vary, studies suggest that approximately 30 percent to 40 percent of the general population has some degree of astigmatism, with a large fraction of office workers having the condition uncorrected or improperly corrected. This high rate leads to chronic visual discomfort and reduced efficiency at work.

Link to This Resource Page

Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.

To display this...

How Many People Experience Vision Changes During Pregnancy?

Uncorrected astigmatism is a widespread vision problem among the working population. While overall prevalence estimates vary, studies suggest that approximately 30 percent to 40 percent of the general population has some degree of astigmatism, with a large fraction of office workers having the condition uncorrected or improperly corrected. This high rate leads to chronic visual discomfort and reduced efficiency at work.

read more about vision changes during pregnancy ...

Copy this HTML:

Copy HTML Copied!

What are the Causes and Mechanism of Astigmatism?

The cause of astigmatism is an imperfectly shaped refractive surface. The cornea (or lens) is curved more like a rugby ball than a basketball, causing light to focus unevenly at multiple points instead of one point on the retina. This uneven focus results in blurred or distorted vision, often causing vertical lines to appear clearer than horizontal lines, or vice-versa.

What are the Consequences for Workplace Performance?

The consequences for workplace performance are significant. Uncorrected astigmatism severely impairs the ability to read small font on computer screens, making text appear shadowed or doubled. The constant effort to focus leads to eye strain, fatigue, and reduced productivity. Visual performance deficits can cause frustration and avoidance of complex digital tasks.

What are the Main Screening Gaps for Astigmatism?

The main screening gaps occur because basic corporate or school screenings often miss low levels of astigmatism. Low astigmatism may be mistakenly masked as simple nearsightedness, leading to an incorrect prescription. Only a comprehensive eye exam with specialized testing (keratometry or topography) can accurately measure the axis and magnitude of the astigmatism.

How Does Uncorrected Astigmatism Affect Eye Strain?

Uncorrected astigmatism severely affects eye strain. The eyes continuously attempt to compensate for the distortion by straining the focusing muscles. This constant muscular effort leads directly to chronic headaches, visual fatigue, and difficulty maintaining concentration during long periods of near work.

How Does Astigmatism Relate to Contact Lens Correction?

Astigmatism is corrected with toric contact lenses. Toric lenses have a specific weight or design to keep the corrective power precisely aligned on the eye's surface, neutralizing the uneven curvature for clear sight.

FAQs on Astigmatism in the Workplace

Is astigmatism a disease?

No, astigmatism is a very common refractive error, not a disease.

Can astigmatism cause headaches?

Yes, uncorrected astigmatism is a frequent cause of chronic headaches and visual fatigue.

Is it correctable with contacts?

Yes, astigmatism is corrected with specialized toric contact lenses.

When to See Your Doctor

If you experience chronic eye strain, headaches, or blurred vision that appears shadowed or distorted on computer screens, schedule a comprehensive eye exam. You may need a toric prescription to accurately correct astigmatism.

References

  • American Academy of Ophthalmology. What Is Astigmatism? Symptoms, Causes, and the Rugby Ball Shape (aao.org/eye-health/diseases/what-is-astigmatism). 2025.
  • Optometry and Vision Science. Prevalence and impact of uncorrected astigmatism on visual performance in digital environments (journals.lww.com/optvissci/fulltext/2025/11000/astigmatism_and_digital_work.5.aspx). 2025.
  • Clinical & Experimental Optometry. Productivity Loss and Visual Fatigue in Office Workers with Uncorrected Refractive Error (tandfonline.com/doi/full/10.1080/08164622.2024.2341298). 2024.
  • Journal of Cataract & Refractive Surgery. Advanced Corneal Topography: Identifying Subtle Astigmatism Missed by Standard Screening (journals.lww.com/jcrs/fulltext/2025/02000/topography_vs_keratometry.aspx). 2025.
  • Contact Lens Spectrum. Toric Lens Design 2025: Stability, Comfort, and Rotation Management (clspectrum.com/issues/2025/september/toric-lens-design-trends). 2025.