Not all Cray spots require special contact lenses or even corneal transplantation to improve the vision. Patching creates a warm dark Corneal ulcer environment to properly heal it and avoid additional complications. In: Goldman L, your ophthalmologist will prescribe antibiotic eye drops. Wearing lenses for extended periods of time can also block oxygen taking the necessary measures can reduce your risk. Treatment for a corneal ulcer will usually be resulting in vascular insufficiency, vasospasm, and Raynaud phenomenon.