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Straylight As The Result Of Refractive Correction.

Zoraida S Gaurisankar1, Gwyneth A van Rijn1, Gregorius Pm Luyten1

  • 1Department of Ophthalmology, Leiden University Medical Center, Leiden, the Netherlands.

Clinical Ophthalmology (Auckland, N.Z.)
|December 10, 2019
PubMed
Summary
This summary is machine-generated.

Refractive correction with negative lenses slightly increases straylight (light scatter). High minus power contact lenses showed a subtle increase, but not enough to cause visual disability.

Keywords:
contact lenseseyeglassesglarelight scatterrefractive errorstraylight

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Straylight, or light scatter, can affect visual quality.
  • Understanding how refractive correction influences straylight is crucial for optimizing visual performance.

Purpose of the Study:

  • To investigate the impact of refractive correction, particularly negative lenses, on straylight levels.
  • To assess whether different types of refractive correction (eyeglasses vs. contact lenses) affect straylight differently.

Main Methods:

  • Straylight was measured using the C-Quant device in two groups: near-emmetropic eyes with negative lenses and myopic eyes with prescribed correction.
  • Measurements were compared across various negative lens powers and between eyeglasses and contact lenses.

Main Results:

  • In near-emmetropic eyes, each negative diopter added significantly increased straylight by 0.006 log-units (p<0.001).
  • No significant correlation was found between the type of correcting lens (eyeglasses or contact lenses) and straylight values in myopic eyes.

Conclusions:

  • Refractive correction using high minus power contact lenses can lead to a minor increase in straylight.
  • These observed changes in straylight are subtle and unlikely to cause clinically significant visual impairment.