What are Cataracts?
Our eyes works much like a camera. A clear lens is necessary in order for images to be focused clearly on the retina. At birth, our lenses are clear. Lenses can become “cloudy” or “yellow” over time, eventually degrading the quality of our vision. These “cloudy” lenses are referred to as “cataracts”. (please see cataract section for more information) While the development of cataracts can often be a natural result of the aging process, surgeons have been correcting distance vision for decades by replacing natural lenses with clear replacement lenses. Usually surgery is performed when the progression of your visual disturbance is negatively impacting activities like driving, watching television, or reading. The majority of intraocular lenses that ophthalmologists use are designed to give patients good distance vision but patients still need to wear reading glasses to see things up close.
If you are experiencing the onset of cataracts you know how difficult seeing can be. You may be struggling with night vision, have loss of contrast, have glare in sunlight, or feel like you have a general reduction in the quality of your vision. Fortunately, cataract surgery can help you to regain what you’ve lost, both in terms of your vision and your quality of life. Get started, today! By contacting Manchester Ophthalmology.
Using the most up to date methods and instrumentation, cataract surgery is typically performed using a small incision phacoemulsification technique. This means that the cataract surgery is accomplished using the smallest possible incision, and removal of the lens material is accomplished using an ultrasonic probe.
Following proper dilation of the pupil and preparation of the surgical area using betadine or other cleansers, a topical anesthetic is applied to the surface of the eye. An incision of 2.5 to 3 millimeters in length is then created at the junction of the cornea (the clear domed structure on the front of the eye) and the sclera (the white part of the eye).
Another dose of anesthetic is then administered inside the eye through this incision. The front part of the lens envelope, know as the lens capsule, is carefully opened so that the lens material can be removed. This is accomplished using a pen-like ultrasonic device, which pulverizes the hardened and yellowed lens proteins. The pulverized material is simultaneously vacuumed from the eye.
Once all of the cataract material has been removed, and assuming that the lens capsule which was opened at the beginning of the surgery remains strong enough to support the lens implant, a folded intraocular lens specifically chosen by the surgeon to suit your individual needs is then inserted through the original incision and maneuvered into the lens capsule and then centered. The lens will remain inside your eye in this location without moving. Intraocular lenses cannot be felt or sensed in any way by the patient.
In most cases, once the lens is centered within the lens capsule, and the instruments are removed, the surgery is therefore complete. Under most normal circumstances stitches are not required to keep the incision sealed. Should the incision require a suture to be placed for proper sealing, it is generally removed within the first week following surgery.
Recovery from surgery is generally very quick, with most patients achieving noticeably better vision within the first 24 hours of the procedure. Patients are generally asked to use three different types of drops several times daily for the first few weeks after surgery. It is important that during the first 7 post-operative days patients refrain from strenuous activity such as lifting weights for exercise or lifting other heavy objects. Patients should also refrain from rubbing their eyes during the first few weeks following surgery.
If glasses are required following surgery to achieve the best possible vision either for close up work such as reading, or for distance purposes, these will be prescribed three to four weeks after surgery when full recovery is expected. If both eyes are scheduled to have surgery within a few weeks of each other, then glasses, if needed, will be prescribed following full recovery of the second eye.