In astigmatism, the cornea (the clear dome that covers your eye) or the lens (which focuses light rays on the light-sensitive ...

Getting light to hit our retinas depends on different parts of the eye working together. First, the light goes through the ...

Lower-order aberrations — defocus and astigmatism — are responsible for most of the degradation in a retinal image. That said, it is still useful to understand and measure the effect of higher ...

So a retinal vein occlusion is when there is an occlusion in the blood vessels of the retina that are particularly the veins, and it causes a lack of blood flow, or a lack of perfusion ...

With increasing demands of patients concerning refractive outcome after cataract surgery, toric IOLs that correct corneal astigmatism have been introduced more widely to cataract surgery.

Astigmatism is when the surface of the eye ... The cornea is very important in helping the eye focus light rays on the retina. This disorder never appears alone and it is accompanied by either ...

Surgical planning was performed with the data from this device and the known surgically induced astigmatism of the surgeon. Post-operative refractions and visual acuity were measured at 1 month ...