Ophthalmology is a medical specialty focused on diagnosing and treating eye disorders. This field is focused on treating various eye diseases including cataract, eye tumors, dry eye syndrome, orbital fracture, proptosis, ptosis, retinal detachment, and refractive errors. The examination methods that are utilized for eye examination include visual acuity assessment, slit lamp examination, ocular tonometry, gonioscopy, and dilated fundus examination. The other specialized tests that allow diagnosis of eye related diseases include ultrasonography, corneal topography, visual field testing, electrooculography, and electroretinography. Ocular surgery is a treatment method in ophthalmology, which involves surgery of the eye or associated organs. Ophthalmology has various subspecialties, which aim to treat different diseases of the eye. These subspecialties include ocular oncology, glaucoma, refractive surgery, ophthalmic pathology, neuro-ophthalmology, pediatric ophthalmology, cryotherapy, and vitreo-retinal surgery. The topics included in this book on ophthalmology are of utmost significance and bound to provide incredible insights to the readers. It will prove to be immensely beneficial to students and researchers in this field. The readers would gain knowledge that would broaden their perspective in this area of medicine.