Abstract: Optical loupes are disclosed which include eyepieces (21) having an ocular (40) and an objective (42). A transfer tube (44) is mounted for transferring light between the ocular (40) and objective (42). The objective (42) is arranged at an obtuse angle with respect to the ocular and the ocular and objective are in side by side relationship. The transfer tube includes a transfer means having mirrors for transferring light from the objective to the ocular. A light source (38) including a plurality of diodes (100) is mounted between the eyepieces (21) of illuminating a work area. The eyepieces (21) can be adjusted in the interpupliery direction by adjustment nobs (35) which engage in slots (34) on a support bar (22) which hold the eyepieces (21).