Basic Measurements in Ophthalmology

The aim of this book is to focus on the basic measurements in ophthalmology. Ophthalmology is a branch of medicine dealing with the diagnosis, treatment and prevention of diseases of the eye and visual system. The eye, its surrounding structures and the visual system can be affected by a number of clinical conditions. Eyeball being a small mysterious globe of 24 mm diameter with its adnexa performing wonderful functions, it is important to know the measurements of various parts of eye for a better diagnosis of eye disorders and imparting skills in the medical and particularly in surgical management of various ophthalmic ailments. An ophthalmic surgeon incising chalazion should know the thickness of tarsal plate (0.75–1 mm). This book consists of 18 chapters, which include general configuration and gross measurements of eye, measurements of conjunctiva, measurements of sclera, measurements of cornea, measurements of limbus, measurements of anterior chamber, measurements of posterior chamber, measurements of uveal tract, measurements of lens, measurements of zonules, measurements of vitreous humor, measurements of retina, measurements of eyebrows, measurements of eyelids, and measurements of orbit. This book is thus an attempt to bring out some of the important measurements which are routinely used in ophthalmic practice with the hope that they might help all ophthalmologists as a reference tool for their learning and teaching purposes and also for their clinical practice.