The name brings to mind the frightening,grand universal form shown by Krishna to Arjuna in the battlefield. It was like Nostradamus type prediction but in a video format showing current affairs and things to come.Bhisma,Duryodhana,Drona and others along with countless foot soldiers from either side were being railroaded into the jaws of gory death.
Arjuna was stunned and finally understood that all things were preordained by the Lord and that we are but pawns in this cosmic play. He requested for switching off the gory scene and a return to the more acceptable amiable four armed form of the Lord.
The supreme in His Vishwa form is situated in the right eye of every human being and shows us the outer world during our waking hours.
In His Taijasa form,He is present in our neck and shows us reels of dreams,based on past waking hour sightings,in our sleep.
In His praajna form,He is present in our hearts and gives us bliss during deep sleep.
Thus the merciful Supreme Lord gives us vishwa roopa Darshan throughout our lives,24/7.
What about the blind? The blind can also see visions in their dreaming and deep sleep states based on sightings in past births.
This indeed is also the Vishwa roopa darshana.
Remember Vyasa bestowing this facility on Sanjaya so that he could report on the Mahabharata war to the blind king.Or. the special vision conferred on Arjuna.