Table 1 Semi-automated vs. stereographic manual drusen measurements. Measurements of drusen in the middle and central subfields were performed on twelve patients with AMD. Area measurements were made using the digital method by two independent graders (RTS and JKC). The means and standard deviations are displayed for the middle and central subfields. Similarly, stereo grader 2 (IB) estimated the percentage of drusen in the middle and central subfields using the original fundus photographs as stereographic pairs.
From: A Method of Drusen Measurement Based on the Geometry of Fundus Reflectance
| Â | Semi-automated drusen measurements (%) | Manual drusen measurements (%) | ||||
|---|---|---|---|---|---|---|
ID # | Middle Subfield | std | Central Subfield | std | Middle Subfield | Central Subfield |
1 | 7.3350 | 0.4455 | 12.3450 | 6.4135 | 10 | 15 |
2 | 14.2600 | 3.3517 | 8.4750 | 4.7588 | 10 | 5 |
3 | 1.4550 | 0.1626 | 0.0000 | 0.0000 | 0 | 5 |
4 | 0.0000 | 0.0000 | 0.3400 | 0.4808 | 1 | 0 |
5 | 6.1600 | 0.7354 | 7.3350 | 1.9587 | 5 | 10 |
6 | 28.3700 | 4.8790 | 19.3550 | 21.4324 | 30 | 15 |
7 | 0.0000 | 0.0000 | 0.0000 | 0.0000 | 3 | 3 |
8 | 4.4550 | 1.5910 | 10.9500 | 1.9092 | 7 | 10 |
9 | 36.3100 | 8.5136 | 39.5600 | 1.7395 | 35 | 35 |
10 | 55.5350 | 3.7265 | 51.4350 | 1.2233 | 60 | 50 |
11 | 8.5500 | 0.3536 | 32.1550 | 3.3163 | 10 | 45 |
12 | 9.3200 | 0.5940 | 36.1850 | 5.6781 | 7 | 35 |