An intraocular lens can sometimes cause issues with vision, comfort, or glare. When more straightforward options have been tried to fix the problem and are not successful, the lens can be removed and a more suitable lens implanted.
Patients with pupil abnormalities or iris defects from birth defects, trauma, or other causes, may suffer from a varying degree of visual disability. Iris reconstruction surgery is usually done through small incisions in the cornea. A variety suturing techniques are used to fix the pupil or iris irregularity.
Artificial iris implants are used when iris defects cannot be fixed by suturing. The color, size, and material of artificial iris implants vary. Proper implant selection is made according to what each individual patient’s eye needs.
Secondary intraocular lens implantation is considered when the eye’s regular support system (capsule bag, zonules) for a artificial lens is either absent or damaged by trauma or previous surgery. Without this regular support, artificial intraocular lenses can be supported in several other ways: placed in the anterior chamber angle, fixated to the iris with prolene sutures, clipped to the iris either in front of or behind the plane of the iris, or fixated to the sclera (by Gore-Tex sutures or fibrin glue). Each technique has its pros and cons, and the most appropriate way is chosen based on the condition of a patient’s eye.