Words similar to macula
Example sentences for: macula
How can you use “macula” in a sentence? Here are some example sentences to help you improve your vocabulary:
The regions studied were the central 1000-micron diameter circular subfield and the 3000-micron outer diameter annular subfield (with 1000-micron inner diameter) centered on the fovea (the 1500 micron diameter anatomical center of the macula).
Hence, given two anatomically identical drusen, one in the center of the macula and one at 3000 μm, the observer will see them differently in the fundus photograph.
We therefore constructed appropriate annular zones in the macula for percentage (multiplicative) increases in brightness to be empirically determined using published data on the spatial distribution of macular pigment [ 29 30 ] . These observers found that the macular pigment density (hence optical density) is greatest centrally, drops to half-maximum within a diameter of 500 to 600 μm, reaches a quarter-maximum at a diameter of about 1000 μm, and thence tapers slowly to a low constant level within a 2000 μm diameter region.
Hence, if luteal pigment was evident (as judged by the presence of a disc of characteristic yellowish coloration in the central macula, or marked central background darkening consistent with that of luteal pigment), this region was corrected first.
Lastly, despite the use of a wide range of general image analysis tools, their methods, as those in the other references, take no account of the intrinsic background variability, and accordingly can produce errors in a systematic and predictable fashion: inadequate segmentation centrally and over inclusive segmentation in the peripheral macula, as their own illustrations demonstrate.
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