Answers are grounded in this paper and cite their sources.
A selected group of patients with hereditary retinal degeneration have been studied by electroretinography and fluorescein fundus photography. At early stages of the diseases, receptor cell damage occurs prior to marked disturbance in choroidal or retinal circulation. In advanced degeneration the fluorescein pattern can be altered by pigment migration within the retina.
No takes yet. Share an insight, caveat, or question.
Geltzer et al. (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: