Tanjit Dosanjh is an optometrist. When his father went to prison, he decided he wanted to help people in prison by using his professional skills.
He learned of optical labs in California's prisons, and raised enough money to launch an optical training lab inside HMP Standford Hill in 2012.
Since then, he's trained 60 prisoners, 45 of whom have secured jobs with opticians.
He also secured optometry contracts with 60 prisons. Spectacles are made by prisoners, which makes the organisation financially self-sustaining.
Tanjit's essay comes from the book Humane Justice, published by the charity Khulisa as part of the Monument Fellowship.
You can download the book for free at www.khulisa.co.uk/resources/humane-justice
It's produced by the Prison Radio Association.
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