Page 59 - Computational Retinal Image Analysis
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3 Ophthalmic instruments 49
SS-OCT MS Slow drop from OPD = 0 Yes Yes
5–10 μm 3–5 mm >100 kHz Possible Possible Better for choroid
FFT 6.25 s 6.25 s
Table 1 Typical capabilities of various OCT instruments employed to image the human eye.
CB-OCT MS Fast drop from OPD = 0 Yes Yes
2–10 μm 2–3 mm >50 kHz 12.5 s Possible 12.5 s Possible Better for RPE
FFT
Axial TD-OCT 2–10 μm Unlimited Constant 100 Hz 2500 s Yes 2500 s Yes RPE/choroid
En-face TD-OCT 2–10 μm Unlimited Constant 2 Hz 0.5 s Yes 250 s Yes RPE/choroid
Typical values (capability) Axial resolution Axial imaging range Sensitivity vs. depth Line rate Time to produce an en- face image a Real-time en-face imaging Time to produce a 3D volume b Real-time 3D volume Penetration in retina a Size en-face image 500 × 500 pixels. b Size 3D volume 500 × 500 × 500 pixels.
