A simple and inexpensive way of constructing a fixation annulus is described. Such a device is important for experiments in which a fixation spot in the test field area is undesirable or when subjects’ experimental tasks preclude their manipulation of a fixation dot brightness control. A luminous compound is inserted into transparent plastic tubing which can be shaped and inserted into a groove milled to fit the tube’s diameter and shape. Annulus luminance is in the scotopic range. Repeated measurement showed that there was no brightness loss over time. Ways of further attenuating brightness are discussed.