Exhibit 6
Assessment of Arteriolar Abnormalities in Photographic Examples A1 to A8
|
Example Photograph |
Focal Narrowing |
Arterio-Venous Crossing Abnormalities (Arterio-Venous Nicking) |
||||||||
Arteries (disc) |
Arterioles (Quadrants) |
|||||||||
Disc |
Zone A |
ST |
SN |
IN |
IT |
ST |
SN |
IN |
IT |
|
A1 |
definite |
definite |
0 |
Q |
0 |
0 |
0 |
0 |
0 |
0 |
A2 |
severe |
definite |
definite |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
A3 |
0 |
definite |
definite |
definite |
0 |
0 |
0 |
0 |
0 |
0 |
A4 |
definite |
0 |
0 |
definite |
definite |
severe |
0 |
0 |
0 |
0 |
A5 |
0 |
definite |
0 |
definite |
0 |
0 |
0 |
0 |
0 |
0 |
A6 |
0 |
0 |
0 |
definite |
0 |
0 |
definite |
0 |
0 |
Q |
A7 |
Q |
Q |
definite |
0 |
0 |
definite |
severe |
0 |
definite |
Q |
A8 |
0 |
0 |
0 |
0 |
0 |
0 |
definite |
0 |
0 |
definite |
Key:
0 = none
Q = questionable
definite
severe
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2/17/98