Focus sight

The Focus sight is a headband which was released on 8 February 2010 together with the strykewyrms, the Hexcrest, and the Staff of Light. It boosts the player's Ranged attack and both Magic and Ranged defense bonuses. It is only dropped by desert strykewyrms. The Focus sight, along with the hexcrest, are required to make a full slayer helmet. When worn, the player's ranged damage and accuracy are increased by 15% against the monster assigned. This item is NOT lendable.

On the day of release, players were buying the focus sight and hexcrest at 10 - 15 million coins.

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 Head-mounted display
 * Oddly, you can't see the crosshairs on the Focus Sight from the equipment menu unless it's on a Full Slayer helm, but is fully visible while chatting to a npc.
 * Despite the hefty Grand Exchange price, the Focus sight is not kept upon death over less expensive items such as Ring of wealth.
 * When this item was released, its starting price was 1.5 million coins.
 * The focus sight may be based on the "Scouter" from the anime Dragon Ball Z, which was used to locate and read energy levels.