topically administrable aqueous composition for a human or animal eye, method for treating a condition involving deficiencies in natural tears in the human or animal eye, composition for topical application in the treatment of an ocular disorder or condition of the human or animal eye, method for treating an eye or human eye disorder or condition, a composition for use in treating or associated with eye or human eye pain and a method for relieving or approaching eye or human eye pain
Aqueous compositions suitable for topical administration to the human or animal eye contain at least one water-soluble polymeric ophthalmic lubricant, such as hyaluronate, carbomer gel or hypromellose, together with a water-soluble analgesic. The analgesic may be an opiod, particularly an opioid having an affinity for 5-HT receptors, such as tramadol. Typical tramadol levels would be in the range of 0.5% to 1.0% w/v. The aqueous compositions may for example be used as artificial tears, and as general ophthalmic lubricants for treating conditions such as dry eye or blepharitis. Further compositions combine ophthalmologically-active agents, such as pharmaceuticals, with opioids, such as tramadol in particular. These compositions may be used to treat the eye while reducing pain or discomfort that would normally be produced by administering these particular pharmaceuticals to the eye, and increasing the efficacy of the pharmaceuticals. Compositions are also disclosed, containing opioids with 5-HT receptor activity, which are of general use in alleviating pain in and around the eye.
