Glowing Dog's Eye Effect

[Mister_Blenderson]

Greetings!

I’m interested in creating a glowing eye effect to replicate what happens to animal eyes when light is shone on them in the dark.

So far I’ve applied an emissive shader and can get a nice glow. I haven’t figured out how to get the rich gradient of colour and the wet look of the eyes.

Any tips would be extremely appreciated.

Thanks!

[DeckardX08]

You need a material with Normal Falloff effect. First, you compare the mesh normal direction with a view direction (called Incoming in Inputs - Geometry) using Dot Product node, then you put the resulting float into Color Ramp. This material then have to be put on a flat disc inside the dog’s eye
https://i.gyazo.com/d2f62e97c6ffc09014930e015797285e.png https://i.gyazo.com/248e96ae5d3b5c48d7a2f5699b8df13f.png

[moony]

I have experimented with retro reflectivity in the past - take a look at these threads

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[Mister_Blenderson]

Thank you! That makes plenty sense. I am using Blender 3.0 and cannot find the Dot Product node, is it part of an add-on?

[DeckardX08]

Sorry, Converter - Vector Math - choose Dot product

[Mister_Blenderson]

Works great!

I plugged the color ramp into the emission as well just to give a sense of reflected light.

[Mister_Blenderson]

Thank you! This is a wealth of knowledge. I’m going to look into this forum and the volumetric scatter node, I’ll add my results here.