Cataract surgery was once conducted with scalpels on a level that modern professionals would find unthinkable, but medical technology and modern electronics have transformed the procedure into a painless outpatient procedure with an extremely rapid recovery. Patients generally experience no discomfort and return to normal activities the very next day.
The eye is essentially a sphere with an opening, called the pupil, to let in light. A transparent crystalline lens is positioned within the pupil, and the interior of the eye is filled with a clear, gelatinous fluid. The shape of the lens is adjusted by the iris to focus the light entering the pupil. The lens is held in place by a thin, transparent layer called the cornea.
Light must pass through the cornea, the lens, and the gelatinous fluid inside of the eye to reach the retina. This is where light is transformed into the signals transmitted by the optic nerve to the visual cortex of the brain. If the transmission of light is impeded in any way, vision is impaired.
A cataract is a cloudiness that develops in the lens of the eye. Most patients with cataracts are elderly, but certain chronic illnesses can increase the likelihood of developing cataracts at earlier ages. Without treatment, the cloudiness can increase to such a level that almost no light passes to the retina.
In modern cataract surgery, a tiny incision is made through the cornea at the side of the lens. The lens is fragmented with high frequency vibrations and removed, and an artificial lens is inserted to replace it. Patients are anaesthetised but conscious for this procedure.
There are multiple varieties of artificial lenses, and all are extremely flexible. They are folded to a fraction of their normal size and unfolded once they have been inserted. This allows the corneal incision to be much smaller than the diameter of the lens and to heal rapidly.
The artificial lens has a certain corrective element. Patients who wear eyeglasses prior to cataract surgery often require far weaker prescription lenses afterward. New eyeglasses are not prescribed until the incision has completely healed and the pupil has gradually recovered from chemical dilation.
Cataract surgery has potential issues which may concern patients. Although patients can return to normal activities the day following the surgery, functioning with uncorrected vision in the post-operative eye can be troublesome.
Most cataract surgeries require a follow-up treatment approximately one year after surgery. The thin layer of cornea that holds the artificial lens in place gradually develops a yellow tint after surgery. An ophthalmologist treats this condition by using a laser to remove the yellowed layer. The treatment is required only one time, is completely painless, and is usually completed during an office visit.
Les writes about laser eye surgery for Personal Eyes where you can find out more about eye procedures to suit your lifestyle.
Thankyou Les for this informative article for Kontrolsports who provide suitable eyewear for post op eye surgery to help relieve pain from sensitive light.
Recent Comments