Issues with the Cornea
The cornea, a transparent layer that covers the front of the eye, plays a crucial role in focusing light into the eye. However, various problems can arise within the cornea, leading to complications. One common issue is diplopia, which occurs when the surface of the eye becomes distorted. Additionally, the cornea can sometimes cause a refractive error known as astigmatism, where parallel rays of light fail to converge onto a single spot on the retina. This can result in blurred vision. Moreover, the cornea is susceptible to damage from dryness and infections like shingles or herpes zoster, which may lead to scarring.
Issues with the Lens
The lens, in collaboration with the cornea, plays a crucial role in directing incoming light towards the retina at the back of the eye. Positioned behind the pupil, it adjusts its shape to achieve proper focus. However, as individuals age, the lens may become clouded, resulting in a condition called cataract, which is the primary cause of diplopia related to the lens. Fortunately, modern eye surgery offers safe and effective cataract removal procedures.