In Dr. Louise Sloan created ten new optotypes using sans serif letters. Like Snellen letters, Sloan Letters are formed within a square, with the stroke width equal to one-fifth of the letter height and with equal visual weight.
Biko is a geometric sans serif with a strong and yet friendly character. The font is perfect for display, copy text and logos. The name is a tribute to Steve Biko: a South African anti-apartheid activist.