Dalek eyestalk The Dalek eyestalk , also called the eyepiece , eye antenna ( COMIC : " The Trodos Ambush " ) or tele - eye , ( COMIC : " The Daleks Are Foiled " ) was the part of the Dalek which enabled the Kaled mutant inside its shell to see . Design . The Dalek eyestalk was mounted on the Dalek ' s dome and enabled the Dalek to see its surroundings . It was the only vulnerable part of the Dalek . ( TV : " Resurrection of the Daleks " ) The Daleks produced by the Progenitor had radically redesigned eyepieces with black rings on the stick , fins on the cone , and the lens being organic rather than robotic . The viewpoint from this eyepiece is similar except for an opaque orange perimeter with honeycomb circuitry and protruding organic veins . ( TV : " Victory of the Daleks " ) Abilities . With a wide - angle lens , the eyepiece could magnify images so that the Dalek could see across great distances and also track a person ' s footsteps . ( TV : " Destiny of the Daleks " ) The eyepiece was the most vulnerable part of the Dalek . Dalek eyestalks from a post - Last Great Time War era were capable of even greater forms of magnification , with various scales displayed in - vision . The viewpoint from the eyepiece varied over time , from a simple telescope - like view ( TV : " The Dalek Invasion of Earth " ) to an infrared scanner ( TV : " Destiny of the Daleks " ) to a bright green ( or white , in the case of Imperial Dalek s ) lens , with Kaled script readouts displayed in the top and bottom left corners . ( TV : " Remembrance of the Daleks " ) By the time of the Last Great Time War , the eyestalks all contained blue glowing lenses , with a targeting aid " on - screen " at all times . ( TV : " Dalek " ) Weaknesses . If the eyepiece was destroyed or if the lens was covered , the now - blind Dalek became a reduced threat . Daleks would behave erratically under these circumstances as the creature inside the casing was unable to deal with any danger . They would move around uncontrollably and fire their weapons in a blind panic , usually accompanied by the frantic screaming of " My vision is impaired ! I cannot see ! " . ( TV : " The Daleks " , " The Daleks ' Master Plan " , " Resurrection of the Daleks " , " Revelation of the Daleks " , " Remembrance of the Daleks " , " The Parting of the Ways " ) Whilst on Skaro , in order to escape from the Dalek base , the Fourth Doctor threw his hat onto a Dalek ' s eyestalk . The Dalek began firing incandescently , guided by Davros , and almost hitting Davros in the process until the Doctor destroyed it . ( TV : " Destiny of the Daleks " ) The Second Doctor previously used the same tactic against Dalek 4 on Trodos , allowing him to penetrate its inner hearing system with his recorder and render it berserk . ( COMIC : " The Trodos Ambush " ) During the Shoreditch Incident , Ace fired an ATR ( Anti - tank rocket ) at an Imperial Dalek and was shocked at the damage . She responded by saying " I aimed for the eyepiece " . While inside a Dalek shuttle craft , the Seventh Doctor merely placed his hat on a Dalek ' s eyepiece to confuse it while he " shorted it out " . ( TV : " Remembrance of the Daleks " ) However , post - Time War Daleks overcame this exploitable weakness . Their shielding could resist most bullets , although bastic bullet s were still somewhat effective . ( TV : " The Parting of the Ways " ) They could also melt any hindrance , as Wilfred Mott discovered when he shot a Dalek eyestalk with a paintball gun . The paint was immediately melted off and the Dalek was heard to say " My vision is " not " impaired " . ( TV : " The Stolen Earth " ) The Daleks of the New Dalek Paradigm had the ability to repair their vision if their eyestalk was damaged , so the weakness could only be exploited as a temporary distraction . ( TV : " The Big Bang " , GAME : " The Eternity Clock " ) However , repairs could not be made if the eyestalk was severed from the main casing or if the damage was too great . ( COMIC : " The Only Good Dalek " , " The Dalek Project " ) Other uses . Dalek eyestalks were worth a considerable amount during the Second Dalek War of the 26th century . They were collected by Dalek Killer s and bounty hunters and were worth 20 decacredits after they were returned to the Earth forces to confirm a kill . Some people like Jon Bowman and his crew on - board the " Wayfarer " did this for a living . ( PROSE : " Love and War " , " Prisoner of the Daleks " ) Outside of times of war , eyestalks still had value and could attest to someone ' s character since killing a Dalek was no small feat . The Doctor in his eleventh incarnation once salvaged the eyestalk of a damaged Supreme Dalek to use as bartering leverage with Gantok to learn more about the Silence . ( TV : " The Wedding of River Song " ) On another occasion , the Doctor used an eyestalk to display proof of his courage and comradeship to gain the trust of one of the many fleet s besieging Trenzalore , before realising he had landed on a Dalek ship . ( TV : " The Time of the Doctor " ) He kept the eyestalk of a Dalek from the Time War in the TARDIS drawing room . ( GAME : " TARDIS " , " The Gunpowder Plot " ) A Dalek Supreme sent to 26th century Spiridon had the unusual feature of a lamp in its eyestalk lens . It held the same communications function as a regular Dalek ' s luminosity dischargers on the sides of its head , lighting up when it spoke . ( TV : " Planet of the Daleks " ) Another Dalek , the immediate subordinate to the Emperor that was part of the mission on Kar - Charrat to obtain information , had the same eyestalk like the member of the Supreme Council . ( AUDIO : " The Genocide Machine " ) While on Skaro , the Eleventh Doctor sent Amy Pond to salvage a Dalek eyestalk , which he needed to create the Dalek Vision Disruptor to blind the rest of the Daleks . ( GAME : " City of the Daleks " ) The Daleks ' humanoid puppets also had eyestalks , which emerged from their foreheads . ( TV : " Asylum of the Daleks " , PROSE : " The Dalek Generation " , TV : " The Time of the Doctor " , TV : " The Magician ' s Apprentice " ) The robot ic Dalek that the Doctor dubbed Quasimodo Dalek had two eyestalks , both in place of its gunstick and manipulator arm . A gunstick was attached where the eyestalk should have been . ( COMIC : " The Dalek Project " ) Rusty ' s eyestalk was used by the Twelfth Doctor , Clara , and a team from the Combined Galactic Resistance as an entry into the Dalek once they were miniaturised in order to undertake their mission to uncover why the Dalek became good . ( TV : " Into the Dalek " )