Blindness

Blindness was the condition of lacking visual perception due to physiological or psychological factors. There were varying degrees of blindness, ranging from minor visual impairment to total loss of eyesight.

Ada Gillyflower was blind from her mother, Winifred's, experiments with red leech poison to create an antidote from the toxins. Winifred claimed that she was blinded by her father in a drunken rage. (TV: The Crimson Horror)

Davros was left blind after he was crippled in a Thal attack. (AUDIO: Davros, Corruption) He was later able to see via his cybernetic third eye which appeared as a blue orb embeded in the middle of his forehead. (TV: Genesis of the Daleks)

Dalek mutants could see outside their casing via the eyepiece, a stalk located at the top of the dome. (TV: Resurrection of the Daleks) The eyepiece remainded the only vulnerable part of the Dalek casing even as Dalek technology advanced to make them impervious to bullets. (TV: Dalek, The Parting of the Ways) Aside from destroying the eyepiece via gunfire, the Fourth Doctor once temporarily blinded a Dalek by throwing his hat on its eyestalk. (TV: Destiny of the Daleks)

A blind vicar who lived in Shoreditch in 1963 prepared a grave for the Hand of Omega at the request of the First Doctor and later presided over the burial of the coffin containing the Hand at the request of the Seventh Doctor. He stated to the Doctor that he had noticed the Doctor's voice had changed since they last met, to which the Doctor replied, "Yes it has changed, several times". (TV: Remembrance of the Daleks)


 * In the novelisation, his name is given as Parkinson and he was blinded during World War I.