An optical therapeutic device comprising a front body portion, a light source provided in said front body portion, a spherical, translucent quartz lens provided in front of said light source, a bezel provided on said front body portion and configured to hold said spherical, translucent quartz lens such that a portion of the quartz lens protrudes outside the rim of the bezel. Also described is a method of using the device to apply light stimulation to acupuncture points of a human or animal body and a method for manufacturing the device.