Score	Retinal Leakage
0	Major blood vessels appear very straight with limited tortuosity of smaller vessels.
1	Major blood vessels present increased tortuosity and/or vessel dilation.
2	Leakage is present between major vessels, no leakage between minor vessels.
3	Leakage is present between major and minor vessels.
4	Leakage is present between major and minor vessels. Minor vessels are not visible.