to bright light for a while. Topical anti-inflammatory drugs and antibiotics are commonly used in the form of eye-drops to reduce the risk of inflammation and infection. A shield or eye-patch may be prescribed to protect the eye while sleeping. The eye will be checked to ensure that the IOL remains in place, and once it has fully stabilised, after about six weeks, vision tests will be done to check whether prescription lenses are needed. Where the focal length of the IOL is optimised for distance vision, reading glasses will generally be needed for near focus. In some cases the patient is dissatisfied with the optical correction provided by the initial implants, and removal and replacement is necessary. This can occur with the more complex designs of IOL when patient expectations do not match with the compromises inherent in these designs, or the patient cannot accommodate the difference in distance and near focusing of monovision lenses. The patient should not participate in contact or extreme sports or similar activities until cleared to do so by the eye surgeon. History Cataract surgery has a long history in Europe, Asia and Africa. It is one of the most common and one of the most successful procedures in worldwide use. The success is due to a combination of improvements in techniques for cataract removal and developments in intraocular lens replacement technology, both in the techniques for implantation, and the design, construction and selection of the IOL. Surgical techniques that have contributed to this success include microsurgery, viscoelastics, and phacoemulsification. Couching Couching is the earliest documented form of cataract surgery, and one of the oldest surgical procedures. It is a technique whereby the lens is dislodged, and pushed aside, but not removed from the eye, thus removing the opacity, but also the ability to focus. Couching was used for centuries, but it has generally poor outcomes and is currently routinely practiced only in remote areas of developing countries. Cataract surgery was first mentioned in the Babylonian code of Hammurabi . Possibly the first depiction of cataract surgery in recorded history is on a statue from the Fifth Dynasty (). It is further alleged that a "relief painting from tomb number TT 217 in a worker settlement in Deir el-Medina" shows "the man buried in the tomb, Ipuy,... one of the builders of royal tombs in the renowned Valley of the Kings, circa 1279–1213 BC"