ΔE 41.9, loose: different enough that you should pick on purpose. Poison Green is a little darker, cooler than Lens Flare Glow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 42). Poison Green is a little darker, cooler than Lens Flare Glow.
The same difference applies the other way round: Lens Flare Glow is a little lighter, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Lens Flare Glow on the colour wheel See Poison Green on the colour wheel
All matches: Lens Flare Glow equivalents · Poison Green equivalents