Notch in contrast sensitivity function of optical origin: diffraction effects of acrylic filters

Elizabeth L. Irving, George C. Woo, W. Neil Charman

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


A series of retinal image degrading filters was evaluated by measuring the contrast sensitivity function of four human subjects through the litters (residual CSF). The acrylic filters, with regularly spaced cross‐hatches, produced progressively more reduction in the residual CSF as the density of the cross hatching increased. For some of the fillers there was a selective toss of a narrow band of spatial frequencies as a result of diffraction effects. This experiment serves to further emphasize the need to rule out optical causes of such notches in the CSF before making a diagnosis of neurological dysfunction.

Original languageEnglish
Pages (from-to)179-182
Number of pages4
JournalOphthalmic and Physiological Optics
Issue number2
Publication statusPublished - Apr 1993
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry
  • Sensory Systems

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