Transdermal patches can be a very precise time released method of delivering a drug. Cutting a patch in half might affect the dose delivered. The release of the active component from a transdermal delivery system (patch) may be controlled by diffusion through the adhesive which covers the whole patch, by diffusion through a membrane which may only have adhesive on the patch rim or drug release may be controlled by release from a polymer matrix. Cutting a patch might cause rapid dehydration of the base of the medicine and affect the rate of diffusion.
An Alternative Treatment
Decreased tear meniscus in dry eye.
As an alternative to steroids—or as an adjunctive therapy—topical cyclosporine can also be used to control inflammation in dry eye disease. While cyclosporine does not demonstrate the rapid anti-inflammatory effect of steroids, it carries fewer risks and is safe for long-term use.
Because of their complementary efficacy and safety profiles, many practitioners often begin dry eye treatment by prescribing both topical steroids and cyclosporine. Following the recommendation of the Asclepius Panel, the use of combination therapy is instituted with the topical corticosteroid, Lotemax (loteprednol etabonate ophthalmic suspension %, Bausch + Lomb) and Restasis (cyclosporine ophthalmic emulsion %, Allergan). 24 The Asclepius Panel recommends practitioners begin early treatment with an anti-inflammatory agent (such as Lotemax) four times a day to improve symptoms and to prevent disease progression. After two weeks, the frequency of the corticosteroid is reduced to twice daily and supplemented with Restasis twice a day. Treatment with loteprednol was stopped after day 60, while cyclosporine treatment is continued.