Table 8 The reference threshold for morphological features grading

\(r_{ILM},r_{RPE}\)

−0.9

−0.5

0

II

(\(\nabla Y_{ILM}\)(P) | PA_L)(\(\nabla Y_{ILM}\)(P) | PE_L)

20

8

3

I

(\(\nabla Y_{RPE}\)(P) | PA_L)(\(\nabla Y_{RPE}\)(P) | PE_L)

(\(\nabla Y_{ILM}\)(N) | PA_R)(\(\nabla Y_{ILM}\)(N) | PE_R)

−20

−8

−3

II

(\(\nabla Y_{RPE}\)(N) | PA_R)(\(\nabla Y_{RPE}\)(N) | PE_R)

(\(\nabla Y_{ILM} |\) Fovea)

70

50

30

I

(\(\nabla Y_{RPE} |\) Fovea)

35

25

10

I

\(\sigma _{ILM},\sigma _{RPE}\)

60

50

25

I

\(K_{ILM},K_{RPE}\)

8

5

3

I