Focus sight

The Focus Sight is a headband released on 8 February 2010 together with the strykewyrms, Hexcrest, and the Staff of Light. It boosts the player's ranged attack and defence bonuses, including magic defence. It is dropped by Desert strykewyrms, which are the only monsters in RuneScape that drop this item. It, along with the Hexcrest, is required to make a Full slayer helmet. Using this item will make your ranged attacks stronger on your slayer task. (similar to the Black Mask, which affects melee)