A method to decrease an ocular adverse event(s) in a patient undergoing monoclonal antibody therapy, wherein said adverse event(s) comprise damage to the corneal epithelium, said method comprising:
- applying a copolymer to said patient in an amount and for a time effective to decrease said damage or adverse effects to the corneal epithelium,
- wherein said copolymer is poly(L-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG),
- wherein said ocular adverse event(s) is corneal epithelial toxicity associated with monoclonal antibody therapy,
- wherein said step of applying said copolymer to said patient decreases said damage to the corneal epithelium,
- wherein said copolymer is applied to corneal and conjunctival epithelial cells of said patient in an amount and for a time effective to decrease said corneal epithelial toxicity associated with monoclonal antibody epithelial toxicity in said patient.