Lumigan 0.03 refers to the concentration of bimatoprost ophthalmic solution in the medication. It contains 0.03% (or 0.3 mg/mL) of bimatoprost as the active ingredient. This concentration is commonly used for the treatment of glaucoma and to reduce intraocular pressure in the eye. As with any medication, it is important to follow the instructions provided by your healthcare professional or the product packaging when using Lumigan 0.03. They can provide you with the necessary guidance, instructions, and information specific to your condition.