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Blindness in glaucoma patients

S Blomdahl1, B M Calissendorff, B Tengroth

  • 1Department of Ophthalmology, St. Erik's Eye Hospital, Stockholm, Sweden.

Acta Ophthalmologica Scandinavica
|February 20, 1998
PubMed
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Glaucoma is a significant cause of blindness, but other eye diseases like macular degeneration and cataracts are responsible for a larger proportion of vision loss. Understanding these causes is crucial for managing visual impairment.

Area of Science:

  • Ophthalmology
  • Public Health

Background:

  • Glaucoma is a leading cause of irreversible blindness worldwide.
  • Assessing the contribution of glaucoma versus other conditions to vision impairment is essential for public health strategies.

Purpose of the Study:

  • To determine the risk of bilateral blindness specifically from glaucoma.
  • To evaluate the extent to which other diseases contribute to vision disability in patients diagnosed with glaucoma.

Main Methods:

  • A survey of low vision clinic registers was conducted.
  • Included were all patients alive in 1991 with a glaucoma diagnosis (n=1895).
  • Blindness was defined as bilateral visual acuity less than or equal to 0.1.

Main Results:

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  • 68% of patients had visual acuity better than 0.1.
  • Of the 590 patients with visual acuity <= 0.1, glaucoma caused low vision in 20%, combined with other eye diseases in 35%, and other eye diseases solely in 44%.
  • Macular degeneration and cataracts were primary causes of low vision in the affected group.

    • Conclusions:

    • While glaucoma contributes to blindness, other eye diseases are significant factors in vision loss among glaucoma patients.
    • The prevalence of glaucoma blindness in the Stockholm region was found to be 0.007% for glaucoma alone and 0.020% for glaucoma combined with other eye diseases.