HB radius, but not MS radius, was also significantly associated with foveolar morphometry. Multiple regression showed MS and HB radii to be significantly associated with the macular pigment spatial profile radius. MS radius (mean 1.4°) was significantly less than HB radius (mean 1.6°), with the spatial extent of both phenomena falling between the boundaries of the foveola and foveal pit. In Experiment 1, horizontal widths of MS and HB were measured using a micrometer system and compared with macular pigment densities and OCT-defined morphometry. HB was generated by alternating the linear polarization axis of a uniform blue field. MS was generated by alternating unpolarized red/blue and red/green uniform field illumination. Dual-wavelength-autofluorescence and OCT were used to define macular pigment density and foveal anatomy in 52 eyes. Measures of HB radii are less specific, with dependence on both macular pigment density and foveal structure.Ībstract = "The relationship of macular pigments and foveal anatomy to the perception of Maxwells brushes (HB) entoptic phenomena were investigated. The size and appearance of MS is a direct indicator of macular pigment density and distribution. Experiment 2 compared perceptual profiles of MS with macular pigment distribution patterns and demonstrated close agreement. The relationship of macular pigments and foveal anatomy to the perception of Maxwell’s spot (MS) and Haidinger’s brushes (HB) entoptic phenomena were investigated.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |