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Age-corrected normal values for perimetry.

Thomas-Michael Wohlrab1, Carl Erb, Jens Martin Rohrbach

  • 1Department of General Ophthalmology, Vogtland-Klinikum Plauen GmbH, Plauen, Germany.

Ophthalmologica. Journal International D'Ophtalmologie. International Journal of Ophthalmology. Zeitschrift Fur Augenheilkunde
|March 29, 2002
PubMed
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This study determined age-dependent normal values for light difference sensitivity (LDS) to detect early visual field defects. Findings indicate that LDS decreases are not linear with age, highlighting the need for updated perimetric standards.

Area of Science:

  • Ophthalmology
  • Visual Science
  • Medical Technology

Background:

  • Accurate assessment of visual field changes requires age-corrected light difference sensitivity (LDS) values.
  • Early detection of visual field defects is crucial for timely intervention.

Purpose of the Study:

  • To establish age- and eccentricity-dependent normal values for LDS.
  • To improve the accuracy of perimetric results by accounting for age-related changes.

Main Methods:

  • Examined 83 healthy subjects aged 18-74 using the 'Centerfield' perimeter.
  • Utilized a threshold-splitting program for central visual field (30 degrees) assessment.
  • Investigated peripheral visual field function after central testing.

Main Results:

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  • Calculated age-related normal LDS values using statistical analysis (group averages and regression lines).
  • Observed non-linear decreases in LDS with age, differing from previous perimetric studies.
  • Identified specific patterns of LDS decline across different age groups (20 to over 60 years).

Conclusions:

  • Current age-related normal values for perimetry may require revision.
  • Re-evaluation of normal values is recommended for various perimetric devices.
  • The non-linear nature of age-related LDS decline necessitates updated normative data.