How to apply damage to player as distance decreases

[Premonitionswow 0]

Hello!

I am trying to have a player take damage and have blurry vision from an object (or person) which intensifies as they get closer to it, such as an irradiated object. 
The script would probably look something like:

<
while (true) do
{getdist obj1 - obj2;
if dist < 5 then (_i = getdammage player;
 player setdamage _i + 0.1
hndRadBlur ppEffectAdjust [_x + 0.1 , _x + 0.1, _x + 0.1, _x + 0.1];)
else ()
};
>

Any help would be much appreciated! Thank you!