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Effects of aging on optical quality and visual function.

Joan A Martínez-Roda1, Meritxell Vilaseca2, Juan C Ondategui2

  • 1Centre for Sensors, Instruments and Systems Development (CD6), Technical University of Catalonia, Terrassa, Barcelona, Spain. jmartinez@oo.upc.edu.

Clinical & Experimental Optometry
|July 26, 2016
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Summary

Aging significantly impacts visual function and optical quality, with low-contrast vision most affected. Reference values for different age groups are established for diagnosing ocular conditions.

Keywords:
agecontrast sensitivityintraocular scatteringmodulation transfer functionoptical qualityvisual acuityvisual function

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Area of Science:

  • Ophthalmology
  • Vision Science
  • Gerontology

Background:

  • Aging affects visual function and optical quality in healthy adults.
  • Reference values for various age ranges are needed for clinical assessment.

Purpose of the Study:

  • To assess the effects of aging on visual function and optical quality.
  • To provide reference values for optical quality and intraocular scattering across different age groups.

Main Methods:

  • Prospective study of 198 healthy volunteers (31-70 years).
  • Assessed visual acuity (VA), contrast sensitivity (CS), and optical quality using Optical Quality Analysis System (OQAS).
  • Measured modulation transfer function cutoff frequency (MTFcutoff), Strehl ratio, OQAS values (OV), and objective scatter index (OSI).

Main Results:

  • Significant correlations found between age and all analyzed variables.
  • Ageing particularly impacted low-contrast parameters like OV (9%) and OSI, decreasing significantly.
  • Optical deficits appear compensated by sensory factors until age 50.

Conclusions:

  • Optical quality measures vary with age differently based on assessment method (subjective vs. objective).
  • Established age-specific values aid in diagnosing ocular conditions by defining normal limits for optical quality and intraocular scattering.