Although spectacles were invented in the 13th century, methods of testing for astigmatism have been developed only within the past one hundred years. Even today, the etiological factors responsible for corneal astigmatism are not well understood. A mechanism which may account for the existence of ...
Most astigmatism is regular corneal astigmatism, which gives the front surface of the eye an oval shape. Irregular astigmatism can result from an eye injury that has caused scarring on the cornea, from certain types of eye surgery or from keratoconus, a disease that causes a gradual thinning o...
Astigmatism can affect the cornea or, less commonly, the lens of the eye. People with corneal astigmatism have an irregularly shaped cornea, whereas people with lenticular astigmatism—you guessed it—have an irregularly shaped lens. Both parts of the eye aid in light refraction, so both types...
If you have a corneal abrasion, it might feel as though there is something stuck in the eye or you may experience a gritty feeling. Corneal abrasions can be caused by makeup brushes, fingernails or even the branches of trees. Blepharitis Blepharitis is a common eye condition which causes ...
What causes corneal scarring? What are symptoms of corneal scarring? How is corneal scarring diagnosed? Can a corneal scar heal on its own? How is corneal scarring treated? What is a corneal scar? A corneal scar blocks or distorts light as it enters the eye and can lead to decreased ...
What is corneal astigmatism? What is mild hyperopia? What is farsighted? What is refractive amblyopia? What is hyperopic presbyopia? What is ocular coloboma? What is strabismus? What is an ophthalmologist? What is regular astigmatism? What is bilateral hyperopia?
I have an astigmatism in my left eye, and I have a very slight color change in either eye, its unnoticeable unless I really concentrate on the color of something and cover each eye individually, etc. My point is, I think astigmatisms can affect the eyes in many ways, not just blurry ...
What is endothelial corneal dystrophy? How is amblyopia inherited? Why does retinoblastoma cause strabismus? How do contact lenses help strabismus? What causes bilateral amblyopia? Is astigmatism hereditary? Is alternating esotropia the same thing as strabismus?
Blepharitis can sometimes spread to the cornea, causing corneal infections and ulcers to develop. Does blepharitis go away? Unfortunately, for most people, blepharitis is a long-term condition. Sufferers will experience repeated episodes, separated by periods without symptoms. However, there are some...
I have an astigmatism in my left eye, and I have a very slight color change in either eye, its unnoticeable unless I really concentrate on the color of something and cover each eye individually, etc. My point is, I think astigmatisms can affect the eyes in many ways, not just blurry ...