Table 1.
Frequencies of Spectral Domain Optical Coherence Tomography Findings in an Elderly Amish Population
| SD-OCT Parameter N = 2,191 Eyes | Present in n (%) |
|---|---|
| Subretinal fluid* | 30 (1.4) |
| Subretinal hyperreflective material* | 30 (1.4) |
| Intraretinal cysts* | 78 (3.9) |
| Outer retinal tubules* | 27 (1.2) |
| Subretinal drusen* | 68 (3.1) |
| Geographic atrophy† | 99 (4.5) |
| Hyperreflective foci over drusen* | 167 (7.6) |
| Hyperreflective foci extent (n = 190 eyes) | |
| Photoreceptor cell layer | 12 (7.2) |
| Outer nuclear layer | 112 (67.1) |
| Outer plexiform layer | 43 (25.7) |
| Pigment epithelial detachment* | |
| Drusenoid | 324 (14.8) |
| Fibrovascular | 30 (1.4) |
| Serous | 11 (0.5) |
*
Cirrus-derived thickness values.
†
Spectralis-derived thickness values.