Glaucoma is a leading chronic eye disease causing irreversible blindness world wide and needs a great concern for Ophthalmologists and policy makers. I hope this book will help health professionals to notice and identify problems in medical treatment of Glaucoma. The challenges seen in eye drop use in glaucoma patients can be generalized in the general population in Ophthalmology practice. The findings are real patients' challenges in developing countries and to some extent in developed countries too.