This invention relates to the use of a heparanase inhibitor for treating, or inhibiting the progression or development of, an ocular inflammatory disorder, such as age-related macular degeneration, diabetic retinopathy, retinitis pigmentosa, retinal 5 vein occlusion, retinoblastoma, uveitis, macular edema, dry eye, ocular inflammation associated with an infection or keratoconus.