An apparatus (100, 160, 170, 200) comprising: an excitation light source (102, 250) configured to produce excitation light wherein the excitation light comprises light having a wavelength that corresponds to an excitation wavelength of a fluorophore; an ablation light source (106, 260) configured to produce ablation light wherein the ablation light is configured to ablate tissue; a beam combiner optically coupled to the excitation light source (102, 250) and the ablation light source (106, 260); a beam scanner (120, 270) optically coupled to the beam combiner and operable to direct the excitation light and the ablation light toward any of a plurality of tissue locations; an optical system coupled to the beam scanner (120, 270), the optical system comprising an exit aperture and a lens; a camera (130, 280) configured to detect emission light emitted by a fluorophore at a an emission wavelength; and a controller, wherein the controller comprises a computer programmed to carry out instructions, the instructions comprising: causing the excitation light source (102, 250) to produce excitation light; causing the beam scanner (120, 270) to direct the excitation light towards a particular tissue location in the plurality of tissue locations; causing the camera (130, 280) to capture an image of a particular tissue location; causing the ablation light source (106, 260) to produce ablation light characterised in that the instructions further comprise: determining a topographical map of a particular tissue location based on a location of the camera (130, 280), a location of the exit aperture, and an angle of the excitation light with respect to the particular tissue location. an excitation light source (102, 250) configured to produce excitation light wherein the excitation light comprises light having a wavelength that corresponds to an excitation wavelength of a fluorophore; an ablation light source (106, 260) configured to produce ablation light wherein the ablation light is configured to ablate tissue; a beam combiner optically coupled to the excitation light source (102, 250) and the ablation light source (106, 260); a beam scanner (120, 270) optically coupled to the beam combiner and operable to direct the excitation light and the ablation light toward any of a plurality of tissue locations; an optical system coupled to the beam scanner (120, 270), the optical system comprising an exit aperture and a lens; a camera (130, 280) configured to detect emission light emitted by a fluorophore at a an emission wavelength; and a controller, wherein the controller comprises a computer programmed to carry out instructions, the instructions comprising: causing the excitation light source (102, 250) to produce excitation light; causing the beam scanner (120, 270) to direct the excitation light towards a particular tissue location in the plurality of tissue locations; causing the camera (130, 280) to capture an image of a particular tissue location; causing the ablation light source (106, 260) to produce ablation light causing the excitation light source (102, 250) to produce excitation light; causing the beam scanner (120, 270) to direct the excitation light towards a particular tissue location in the plurality of tissue locations; causing the camera (130, 280) to capture an image of a particular tissue location; causing the ablation light source (106, 260) to produce ablation light characterised in that the instructions further comprise: determining a topographical map of a particular tissue location based on a location of the camera (130, 280), a location of the exit aperture, and an angle of the excitation light with respect to the particular tissue location.