Cataract surgery (white descent) The surgeon makes an incision of about 10-12 mm in the cornea at the point of contact of the sclera and the cornea, then opens the lens capsule carefully and removes the hard core by applying special tools. After removing the nucleus, the surgeon uses the suction to remove the soft peel of the lens and then injects a special sticky substance into the empty lens capsule to maintain its shape while the surgeon inserts the implantable lens into the correct position, then removes the sticky material and closes the wound with some stitches that remain for at least 3 months. During that time, vision is better than it was before surgery but is not entirely clear. Once the doctor removes the stitches, determines the final measurement of glasses and returns vision as possible.