what feat, etc is tied to to-hit of lightsabers?

[Darth Makaan]

and melee and ranged weapons i'm on the 2nd time as a DS'r but i keep missing with melee, light sabers and ranged i hit more with unarmed attacks. help!

[Epiphany]

dueling for single bladed or unarmed

lightsaber focus

melee weapon focus

strength

or if your dex is > strength, get the finesse feat for lightsabers and melee weapons

[Obireel Y Doncha]

melee weapon focus

 

Epiphany's list is good except, I think, for this item. Melee focus doesn't help with lightsabers (when i was in this discussion months ago, the rationale was that melee weapons are altogether different instruments in that they have weighty physical blades, whereas lightsabers have weightless light blades.)