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Changes in macular function throughout adulthood.

D B Elliott1, D Whitaker

  • 1Clinical Vision Research Unit, University of Bradford, West Yorkshire, UK.

Documenta Ophthalmologica. Advances in Ophthalmology
|January 1, 1990
PubMed
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Age-related vision loss is primarily due to neural deterioration, not lens or pupil changes. This study found that macular function significantly declines in adults, impacting visual recovery efficiency.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Gerontology

Background:

  • Emerging evidence points to the neural system as the primary driver of age-related vision loss.
  • Previous assumptions often attributed significant importance to senile lenticular and pupillary changes.
  • This study investigates the extent of neural deterioration impacting visual function with advancing age.

Purpose of the Study:

  • To further investigate neural deterioration as a cause of age-related vision loss.
  • To quantify the decline in visual function across a wide adult age range.
  • To assess the relationship between age and the efficiency of the visual system's recovery from glare.

Main Methods:

  • Measured Logmar visual acuity in 61 subjects aged 19 to 78 years.

Related Experiment Videos

  • Assessed photostress recovery time (PSRT), a measure dependent on photoreceptor and retinal pigment epithelium integrity.
  • Analyzed data to determine age-related trends in visual function and recovery.

    • Main Results:

    • Significant decline in macular function was observed throughout adulthood.
    • Photostress recovery time (PSRT) magnitude indicates reduced efficiency in visual system recovery from glare exposure with age.
    • Findings support the hypothesis of neural deterioration being a key factor in age-related vision impairment.

    Conclusions:

    • Macular function significantly declines with age, underscoring the role of neural factors in vision loss.
    • Age-related neural deterioration impacts the visual system's ability to recover from light exposure.
    • Senile lenticular and pupillary changes appear to be of lesser importance compared to neural decline in aging vision.