Hello. I just recently wanted to check to see if the new Replay Mod had been released for 1.19 had arrived or not. I noticed that it did so I went to replaymod.com and it kept giving me an error message and wouldn't load the website. I tried it on my phone with wifi as well as without wifi and it still never popped up. Is anyone else having this issue and is there a fix? Source: almost 2 years ago

Iris isn't a shader, it's a shader loader for Minecraft, like optifine. You can get actual shaderpacks here. Source: 11 months ago

I have a suspicion your brother uses "I get head aches" as an excuse to not play minecraft as he finds it too boring. But there is still the possibility the graphics or textures are straining his eyes. You could look into mods to change the look of minecraft and make it more visually appealing. One popular mod I think is called shaders and it might make the game more nice looking and enjoyable for your... Source: over 1 year ago