Shahid Ahmad, 16, resting on a bed in Srinagar's main hospital after his left eye was damaged by pellet gun fired by Indian government forces. — AFP
Lawyers say most of the victims have been booked by police in cases like rioting, stone throwing, damaging public property, or other grave offences.
Many with blinded eyes and other injuries are in jail under a preventive detention law that allows for imprisonment between three months and three years without charge.
"Not a single case has reached the stage of trial," said human rights lawyer Arshid Andrabi.
The local government has paid cash compensation to a handful of victims, but the Trust depends on individual donations and support from numerous mosques in the Muslim-majority territory.
'Lethal at close range'
India's interior minister said in 2016 that the pellet guns are used as a last resort but refused to stop deploying it for crowd control.
The Central Reserve Police Force (CRPF), the Indian paramilitary deployed in Kashmir, told a court in 2016 that they fired about 1.3 million pellets in just 32 days.
Explore: Will the pellet gun victims in Kashmir ever regain their eyesight?
In June this year, a report rejected by India from the UN human rights office called for a major investigation into abuses in occupied Kashmir, highlighting the use of pellet guns as an area of concern.
Amnesty International has urged the Indian government to ban the use of pellet guns, and lawyers and other rights groups have appealed to courts, to little avail so far.
US-based Physicians for Human Rights has called their use "inherently inaccurate (and) indiscriminate", and potentially "lethal to humans at close range".
According to Amnesty International, Israel, Egypt and Venezuela have also used the pump action gun for crowd control but rarely against unarmed protestors.
Egyptian activist Shaimaa al-Sabbagh died after he was hit with pellets in Tahrir Square in 2015. His death led one police officer being sentenced to 15 years in prison.
But there have been no prosecutions of any Indian forces personnel.
On Tuesday, as little Hiba's well-publicised plight added to local anger, the local government ordered an inquiry into the pellet firing incident to "fix responsibility".
"Since 2003, government ordered at least 210 such magisterial enquiries, but not in a single case anyone has been held responsible or punished," a prominent rights lawyers, Pervez Imroz told AFP.