PubMed Stark, W.S. Effect of eye color pigments on the action spectrum of Drosophila . R.M. Analysis of a compound eye mosaic of outer rhabdomeres absent marked with cardinal. White,R.J., J. C.Eissenberg , and W.S. Stark. Eye color mosaicism in ocelli in variegating lines of Drosophila melanogaster . Distal TEM showing many pigment granules appear clear in red-eyed flies.
Chatter suggests that granules break upon sectioning.
From Stark et al., 1988. Using optical neutralization of the cornea, pigmented primary pigment cells, secondary pigment cells and receptor cells can be individually identified in eye color pigment mosaics. The animation was prepared by Rong Wang and Charles Deutch.