Get an auto darkening welding helmet, preferably one where you can adjust the lightness/darkness factor of the lens. For casual work probably not worth going for one of the expensive ones but if you like tools I'd certainly not stop you. If you have a local welding supplies shop they should have a selection and you maybe able to test them there. The one you like might be cheaper elsewhere but it's good to use these specialist shops. You can always haggle if you know what the "cheap" price is.
Info from Lincoln
https://www.lincolnelectric.com/en-g...ng-helmet.aspx