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Related Experiment Videos

An indication for "granny glasses"

S E Brodie1

  • 1Department of Ophthalmology, Mt. Sinai School of Medicine, New York, New York, USA.

Survey of Ophthalmology
|May 1, 1995
PubMed
Summary
This summary is machine-generated.

Eyeglasses failed to correct a young woman's vision due to large astigmatism and shifting cylinder axis. Selecting appropriate spectacle frames resolved the issue, highlighting frame importance in astigmatism correction.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Astigmatism is a common refractive error affecting visual acuity.
  • Accurate measurement and correction of the cylinder axis are crucial for effective eyeglass prescription.
  • Variations in cylinder axis can lead to suboptimal visual outcomes.

Observation:

  • A young woman with significant astigmatism experienced no visual improvement with corrective lenses.
  • Repeated manifest refractions showed inconsistent results for the cylinder axis.
  • The patient's visual function improved significantly after a change in spectacle frame selection.

Findings:

  • The choice of spectacle frames can influence the perceived and actual cylinder axis in patients with astigmatism.
  • Inconsistent cylinder axis measurements may arise from factors beyond the refractive error itself, such as frame fit.

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  • Proper spectacle frame selection is essential for achieving optimal visual correction in specific cases of astigmatism.

    • Implications:

    • Clinicians should consider the impact of spectacle frame choice on refractive correction, particularly for astigmatism.
    • Further investigation into the relationship between frame parameters and optical outcomes is warranted.
    • This case underscores the importance of a holistic approach to eyeglass prescription, encompassing both lens and frame characteristics.