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Glaucoma Can Slow Your Reading Even When You Still See 20/Something

Patients with glaucoma often worry about driving and falling. A cross-sectional study from Federal University of São Paulo, summarized by Healio, shows that everyday reading can suffer too—even in an age when banking, bills, and messaging all happen on screens.

Who was compared

Mariana Chiba Ikeda, MD, and colleagues evaluated 57 people with glaucoma (mean age 66.5; 70% primary open-angle, 30% angle-closure) and 54 healthy controls (mean age 61.8). Participants completed Minnesota Low Vision Reading Test slides on a computer while an eye tracker recorded saccades and fixations. Cognition scores were similar between groups.

What differed

  • Best-corrected acuity and contrast sensitivity were worse in the glaucoma group.
  • Reading speed was slower with glaucoma (about 67–74 words per minute vs 82–94 in controls across slides).
  • People with glaucoma made roughly 50% more saccades (quick eye jumps) while reading.
  • Fixation counts were mostly similar, with longer or more fixations on some individual slides.

The authors suggested lower accuracy landing on targets helps explain the slower pace. Limitations included acuity differences between groups and analysis of the left eye only.

What I tell Thousand Oaks patients

  • Mention reading fatigue, losing your place, or avoiding small print; those clues help us interpret fields and contrast.
  • Brighter, even lighting and larger device text are practical adaptations while we treat the disease.
  • Do not wait for reading trouble to take drops or keep laser/surgery appointments—prevention beats catch-up.
  • Ask whether low-vision strategies or occupational therapy could help if fields are already restricted.

Small changes that help readers

  • Increase font size and contrast on phones and tablets.
  • Use a ruler or finger to keep your place if you lose lines.
  • Take short visual breaks during long document sessions.
  • Update spectacle prescriptions so blur is not adding to field loss.

Khanna Vision Institute monitors glaucoma with pressures, imaging, and fields at our Westlake Village office serving Thousand Oaks. More Los Angeles–area eye education is at los-angeles-lasik.com.

Source: Patients with glaucoma exhibit slower reading speed, altered fixation behavior (Healio Optometry, 07/27/2026). This article is an educational summary written by Khanna Vision Institute and is not a substitute for medical advice.

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