Cataracts ( Cloudy Lens )
The lens of the eye is made up of different parts and cataracts can form in these different portions of the lens. Symptoms can vary depending on the type of cataract forming. Different types of cataracts include; nuclear sclerotic, cortical, posterior subcapsular, anterior subcapsular, and traumatic.
Nuclear Sclerotic Cataracts
This is the most common type of cataract and is caused by an aging process in the lens. This aging process causes a hardening and yellowing of the nucleus in the center of the lens. The term sclerotic refers to the hardening of the lens. This type of lens usually changes slowly in the eye and can cause changes the person’s glass prescription. One may be able to change the glasses for several years before the cataract blurs the vision to the point of needing to be removed. This type of lens usually affects the distance vision as the changes make the eye more nearsighted with time.
This type of cataract forms in the outer layers of the lens. Cortical cataracts mean whitening in this area of the lens. This type of cataract can look like white spokes in a wheel pointing towards the middle of the lens.
Posterior and Anterior Subcapsular Cataracts
This type of cataract develops under the capsule that surrounds the lens. It occurs most often on the posterior or back surface. It usually causes blurred vision when reading or from light shinning into the eye. Problems with driving into the sun or from headlights at night are common symptoms. Steroids, high myopia, and retinitis pigmentosa are risk factors for this type of lens. These are also the type of lens that younger people develop.
Cataracts can develop after receiving an injury to the eye. The severity of the cataract is related to amount of trauma to the eye. The cataract will start forming very quickly after the injury. Once the eye has healed after the injury, it can be removed.