Table 3

Individual druse size, appearance of drusen and cone photoreceptor metrics calculated from AO flood images and SD-OCT

DrusenCone metricsSD-OCT
ID numberEyeHorizontal druse size (µm)Vertical druse size (µm)Druse appearance: number of drusen*Number of conesCone density (cones/mm2)NND
(µm)
Regularity
(%)
RPE-complex thickening (µm)
Over druseAround druse§Over druseAround druseOver druseAround druseOver druseAround druse
5008OD22.122.1Round: 1414054 57252 9083.563.619094
5009OS23.723.7Round: 1191722 07219 5175.425.738493
5009OS23.723.7Round: 191110 45512 7796.757.078993
5005OD26.623.6Oval: 1101311 67414 9435.465.9090884
5009OS26.626.6Round: 1101311 61714 8127.105.949090
5010OS30.633.7Round: 1131312 77212 5275.456.5492947
5001OD30.830.8Round: 1202121 37921 9145.255.3390894
5013OD32.029.1Round: 19119 78511 4166.176.436790
5014OD33.533.5Round: 1323328 41628 9494.654.728493
5001OS34.040.2Lobular: 2384127 82229 8724.604.6892947
5012OD36.127.8Oval: 111711830 97932 7274.114.118785
5007OS39.251.3Lobular: 2394219 28020 7635.175.6787958
5008OD55.333.2Lobular: 3313416 89518 5305.945.79100904
5012OD61.136.1Lobular: 3313352 89253 4953.633.7095974
  • *Suggested number of drusen that have fused together.

  • †Regularity is the percentage of cones with 5, 6 or 7 neighbours.

  • ‡Difference in RPE complex thickness measured in drusen area and RPE complex thickness in the control area.

  • §Control area, mean of 4–6 adjacent locations where a contiguous cone mosaic was clearly visible.

  • NND, nearest neighbour distance; OD, oculus dexter; OS, oculus sinister; RPE, retinal pigment epithelium cell.