FlickerFix removes the annoying screen flicker that starts when the night vision effect drops below 10 seconds. Instead, the effect fades out quickly at 1 second remaining.
It supports Forge, NeoForge and Fabric for Minecraft 1.7.10 - 26.1.2. It is likely incompatible with other mods that change the same night vision brightness function.
A tiny fix your eyes will thank you for, and it joins the mod list of your Minecraft server in one click from the panel.