Lithops optica is a species of plant in the family Aizoaceae, endemic to Namibia.

The name "optica" means "eye-like" and refers to the rounded windows at the top of the leaves.

While most specimens of Lithops optica do not have this colour, the "rubra" variety is by far the most commonly cultivated.

This is a very arid "mist-belt" area, with winter rainfall but extremely dry conditions.

The principal rule of watering is that Lithops should be kept dry from when they finish flowering, up until the old leaf-pairs are fully replaced.