Is it worth using SSS for the tearlines, given they’re simply water and glucose etc that sit on top of the skin and therefore don’t need any additional colour like red penetrating through them? There are ways to fake refraction such as the method in this post (which is for the cornea but the same principle should apply - and could be used for the corneas). A glossy shader set to near zero roughness added on top would complete the illusion: Tarby's sketchbook - #24 by Tarby
The model in the above link is the standard DAZ Genesis 3 geometry, btw.