Effect of different sampling window conditions on parafoveal cone density and packing arrangement measurements

Marco Lombardo, Sebastiano Serrao, Pietro Ducoli, Giuseppe Lombardo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We assessed the agreement between sampling windows of different size and orientation on packing density estimates in images of the parafoveal cone mosaic. Two retinal locations along the horizontal meridian were imaged with a flood-illumination adaptive optics (AO) retinal camera in one eye of ten healthy subjects. Horizontal and vertical oriented sampling windows of different size (320x160 μm, 160x80 μm and 80x40 μm) were selected in each location. On average, the absolute differences between the estimates of cone density of different sampling window conditions were ≤10%. Although the differences were not statistically significant, the different sampling window conditions could not be used interchangeably, except for the vertical oriented windows of 320x160 μm and 160x80 μm. The graphical representation of the preferred packing arrangements of cones by Voronoi tiles was slightly affected by window size and orientation. The results illustrated the high importance of specifying the size and orientation of the sampling window used to derive cone metric estimates to facilitate comparison of different studies.

Original languageEnglish
Title of host publicationOptics InfoBase Conference Papers
PublisherOptical Society of America
ISBN (Print)9781557529756
Publication statusPublished - 2013
EventAdaptive Optics: Methods, Analysis and Applications, AOPT 2013 - Arlington, VA, United States
Duration: Jun 23 2013Jun 27 2013

Other

OtherAdaptive Optics: Methods, Analysis and Applications, AOPT 2013
CountryUnited States
CityArlington, VA
Period6/23/136/27/13

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ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

Cite this

Lombardo, M., Serrao, S., Ducoli, P., & Lombardo, G. (2013). Effect of different sampling window conditions on parafoveal cone density and packing arrangement measurements. In Optics InfoBase Conference Papers Optical Society of America.