Phive Desk Lamp - lights up your whole desk - the 2nd brightest desk lamp I could find on Amazon. I own this and it's seriously awesome.

NeatFI Desk lamp - brightest desk lamp on Amazon. no temperature setting but very very bright cool white.

Or a standard desk-clamp architect lamp with a good LED bulb. The issue with bulb lamps is that they only light up a specific spot on your desk, nothing else.

First two are more expensive but your eyes will thank you a million times over.