Central sparing in annular macular degeneration.
Using fluorescein angiography and monochromatic photography, we measured the size of the central sparing in 45 patients with annular maculopathy (mean +/- S.D., 0.34 +/- 0.15 disk diameter; range, 0.10 to 0.65 disk diameter) and compared it with the size of macular yellow pigment in 40 subjects (mean +/- S.D., 0.31 +/- 0.12 disk diameter; range, 0.1 to 0.5 disk diameter). The close approximation of these values suggested that macular yellow pigment contributed to the annular pattern through a photoprotective mechanism.
Retina Associates, Boston, MA 02114.
J J
JJ
Weiter
F
F
Delori
C K
CK
Dorey
D005451:Fluorescein Angiography; D005584:Fovea Centralis / Q000378:metabolism / Q000473:pathology*; D005654:Fundus Oculi; D006801:Humans; D008266:Macula Lutea / Q000473:pathology*; D008268:Macular Degeneration / Q000378:metabolism / Q000473:pathology*; D008962:Models, Theoretical; D012168:Retinal Pigments / Q000378:metabolism
D012168:Retinal Pigments