by David Twigg (freelance writer, Sheffield, England) (Reprinted here with permission from https://www.edel-optics.co.uk/Retinitis-Pigmentosa.html) Retinitis Pigmentosa covers a group of eye conditions affecting the retina, leading to sight problems and loss of vision. It is one of the conditions falling under the heading of Rod-Cone Dystrophy, genetic conditions in which the rod and cone cells in the eye deteriorate [Read More]
Category: Eye Conditions
All About Eyeglasses
For something so important, most people know very little about their eyeglasses. What do those abbreviations and numbers on the prescription mean? Why do my friend and I have the same prescription numbers, when my vision is so much worse? What does 20/20 mean? If my best vision without glasses is 20/200, am I legally [Read More]
Myopia: Genetic or Environmental?
by Dan Roberts Ophthalmic nearsightedness (myopia) results from an abnormal elongation of the eyeball during the growing years. This extra “axial length” causes objects at a distance to appear out of focus, which can usually be corrected with prescription glasses. The physical aspects of extreme nearsightedness (hypermyopia), however, can lead to a type of uncorrectable [Read More]
What Is Low Vision?
By Dan Roberts An estimated fourteen million Americans have low vision, also called visual impairment. It is generally any interference with sight that hinders the performance of daily activities. More specifically, low vision describes varying degrees of sight loss caused by disease, trauma, or a congenital disorder. Low vision may appear as one or more of [Read More]
Glaucoma: The "Silent Thief of Sight"
Courtesy: National Eye Institute, National Institutes of Health (NEI/NIH) Glaucoma is sometimes called the “silent thief of sight” because it slowly damages the eyes and can cause irreparable harm before there is any vision loss. But this disease is stealthy in more ways than one. Glaucoma has been known at least since antiquity, and yet, [Read More]