Rugby Ophthalmic Solution Eye Drops | Sodium Chloride 5% | 15mL Compare to the active ingredient in Muro-128 Offers temporary relief of corneal edema Contains Sodium Chloride Ophthalmic solution that lessens eye discomfort or swelling due to corneal edema. Instill 1 or 2 drops in the affected eye(s) every 3 or 4 hours, or as directed by a physician. Are you experiencing pain and discomfort due to swelling of the cornea? Try Rugby's Ophthalmic Solution Eye Drops with Sodium Chloride 5% to help decrease swelling of the cornea. It may also lessen eye discomfort or irritation caused by swelling.