A safe and 
effective treatment for 
glaucoma for mammalian species comprises the steps of applying 
insulin and / or 
insulin like growth factors (IGF-1) to an eye. In addition to the 
insulin, another therapeutic agent may be applied to enhance the activity of the insulin. The therapeutic agent may be a pharmaceutical agent or a biochemical pharmaceutical agent. The therapeutic agents include 
prostaglandin analogs, topical beta-
adrenergic receptor antagonists-β blockers, Alpha2-
adrenergic agonists 
hair growth therapeutic agents, beta2-
agonist action agents, parasympathomimetic miotic agents, 
carbonic anhydrase inhibitors, and Physostigmine. In another embodiment, a combination of at least two agents are applied to the eye. To enhance the effect of the insulin, uptake facilitators may be used. Additionally, an 
antibacterial agent may be applied to control bacterial infection.