See full version: How did the Nile s cataracts help Egypt
The Egyptians were protected from invaders due to their geographical features. Furthermore, the cataracts in the Nile to the south protected the Egyptians from lands below them. The cataracts were river rapids. This shows that lands south of Egypt would have to travel by water to reach the civilization.
One may also ask, what caused the cataracts in the Nile? more
How did the cataracts of the Nile affect Nubian trade?
When is the "right time" to have cataract surgery? If you are noticing vision problems and have been told you have cataracts, it's likely your cataracts are bad enough to require surgery.
However, financial considerations and insurance requirements also are factors when considering the best time to have cataract surgery. more
Be sure to review the details of your insurance policy with your insurance agent or your eye doctor's staff so you understand if your vision qualifies you for coverage of your cataract surgery as a medically necessary expense.
Sometimes cataracts can be treated with visual aids, like new glasses, special sunglasses, better lighting, and magnifiers. However, if cataracts are more severe and not improved by these measures, surgery may be needed. Cataract surgery involves making a small incision on the front of eye using lasers or ultrasound. The clouded lens is removed from the eye and a new artificial lens is put in. Cataract surgery is considered safe and effective for those who are good candidates for the procedure. 1,2
Current research suggests that in some cases, cataract surgery may be beneficial for those with AMD, and at worst, may have no effect. Relatively little information suggests that cataract surgery in individuals with AMD will worsen AMD. However, most studies that currently exist on the topic have a relatively short follow-up period. More long-term research is needed to determine the lasting effects of cataract surgery on AMD. 2-8 here
However, some experts have suggested that cataract surgery could make AMD worse, specifically due to the inflammation created during the procedure. Others have suggested that the new artificial lens might not protect as well from certain wavelengths of light that could worsen AMD. However, as time has gone on, improvements in the cataract surgical procedure itself, and new, potentially more protective lenses have been developed, which may help further reduce risks. 2-8 here
When the lens of the eye gets clouded, it is called a cataract. A cataract blocks the ability of light to pass through the lens and to the retina where clear images can be perceived. Therefore, when you have a cataract, your vision is blurry. This blurriness can greatly impact vision, especially if there are other conditions present. Cataracts mainly occur in older adults, from 50-80 years of age and older. Since they occur mainly in older individuals, they can occur alongside age-related macular degeneration (AMD). 1
If you need an eye doctor contact us. We were founded in 1952 and have become the regional eye center for Knoxville, TN. We treat many different eye conditions besides cataract. These include glaucoma, floaters and flashers, blepharitis, dry eyes, diabetic retinopathy, and macular degeneration.
Caring for your eyes after cataract surgery is just as important as caring for them before surgery is needed. Talk to your eye doctor about the benefits of anti-reflective coating and photochromic lenses which both protect your new sight.
Cataract surgery is outpatient microsurgery. The surgery only takes a few moments and for most, no stitches are required. After the surgery, patients return home and resume normal activities in a couple of days.
The staggering reality is 24.4 million people age 40+ and older will develop cataracts. By the age of 75, that number rises to half the U.S Population. The development of cataracts is a natural part of aging, but eye injury as a side effect if other surgery can also cause the condition.
The result of the surgery is a lens clear of cloudiness and an improvement in your vision.
There are three primary types of cataracts: nuclear sclerotic, cortical, and posterior subcapsular they also have unique symptoms which are discussed below.