made under high magnification at the slit lamp biomicroscope documentation of differences between the control and treatment areas is accomplished using a camera specially adapted for use with the slit lamp biomicroscope length of lashes increased length of eyelashes will be observed on the side treated with bimatoprost emulsion the difference in length is expected to vary from approximately 10 to as much as 30 number of lashes an increased numbers of lashes will be observed in the treated eye of each patient in areas where there are a large number of lashes in the control eye the increased number of lashes in the bimatoprost treated eye gave the lashes on the treated side a more thickly matted overall appearance in areas where there are lash like hairs above the lash line and in the medial and lateral canthal areas the hairs will be much longer thicker and heavier they also leave the surface of the skin at a more acute angle as though they are stiffer or held in a more erect position by more robust follicles this greater incline pitch rise or perpendicular angulation from the skin surface gives the appearance of greater density of the hairs the foregoing observations clearly establish that 0 01 bimatoprost emulsions as described herein can be used to increase.