Focus sight

The Focus Sight is a headband which was 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 increase your ranged damage by 15% only while doing your slayer task. (Similar to the Black Mask, which affects melee as well as the Hexcrest which affects magic.)

A Focus Sight drop is mentioned in the Adventurer's Log with the message "After killing a Desert strykewyrm, it dropped a focus sight".

=Trivia=
 * The Focus Sight is most likely based off a HMD (Head-Mounted Display).
 * It resembles the eyepiece that Garrus Vakarian wears from the Mass Effect series.
 * It also resembles the scouter, which is a piece of headgear from Dragonball Z.