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[MikeT]

Interesting comments regarding wearing glasses, I'm wearing varifocal glasses, will try using reading glasses, see if that helps.

[mrutty]

My lecturer recommend them for TIG work. Just a cheap pair from Boots

[Tim_Moore]

Read somewhere its best to start with 14 LPM

way too much gas at 14L/m, you will need this much if you are welding outside with a slight breeze.
Inside the workshop with no air movement you can comfortably run 7-10LPM. If you are spot welding alot (typical car stuff) then be mindful that this will burn even more gas as the pressure will build up the first pull of the trigger will dump a "puff" of gas until the flow regulates until equilibrium is established. as soon as you stop this pressure builds again resulting in alot of wasted gas!

if you go for spot welding try keep momentum of the pulses to reduce the build up of pressure!
welding gas cost can add up quickly!