Scanning Laser Ophthalmoscopy (SLO)

In it a narrow laser beam of single wavelength illuminates the retina one spot at a time and amount of reflected light at each point is measured which depends upon reflective, refractive and absorptive property of tissue. The advantage of SLO over conventional Ophthalmoscopy is better resolution of image in case of media opacity (Vitreous Hemorrhage, Cataract) and the patient is not affected by bright illumination of conventional Ophthalmoscopy which allow better high resolution real time motion image of macula without patient discomfort. SLO Angiography can be performed after intravenous Fluorescein or Indocyanine green dye to study choroid and retinal blood flow.