All other IOLs require surgeons to use pre-surgery measurements to determine a patients post-surgery lens power. The drawback of this is that pre-surgery measurements are taken while a patient still has cataracts, and they cant account for minuscule shifts that occur during healing. An adjustable IOL allows surgeons to implant it and then, once healing is complete, use an Ultra Violet light delivery device to fine tune it until it suits the patient. An early example being the (RxSight) Light Adjustable Lens (LAL). Accommodating
Some newer lens designs attempt to allow the eye to regain some partial focusing ability in order to change focus from distance to near (accommodation). However, many accommodating IOLs used today only achieve a very limited improvements in near vision which reduced over time. Accommodative intraocular lenses may also have a slightly higher risk of developing posterior capsule opacification (PCO), though there is some uncertainty around this finding. PCO is a common side-effect of many cataract surgeries and is easily treatable with a one-time laser capsulotomy procedure (see below). Accommodating IOLs interact with ciliary muscles and zonules, using hinges at both ends to "latch on" and move forward and backward inside the eye using the same mechanism as normal accommodation. These IOLs have a 4.5-mm square-edged optic and a long hinged plate design with polyimide loops at the end of the haptics. The hinges are made of an advanced silicone called BioSil that was thoroughly tested to make sure it was capable of unlimited flexing in the eye.
A child with a spastic CP diagnosis will likely be referred to screening for other conditions associated with spastic cerebral palsy such as epilepsy (seizure disorder), intellectual disability, and visual impairment. Types
Scientific classifications
The types of spastic cerebral palsy are generally distinguished by the primary areas of the body that are affected. Spastic hemiplegia Hemiplegia is a type of cerebral palsy affecting one vertical half of the body (such as one arm and one leg). The affected side of the body is opposite the affected area of the brain in hemiplegia. For example, if the right side of the brain is damaged, the person will have weakness or paralysis on the left side of the body. People with hemiplegia typically favor an arm or hand and may keep the weaker hand in a fist. Typically, people that have spastic hemiplegia are the most ambulatory of all the forms, although they generally have dynamic equinus (a limping instability) on the affected side and are primarily prescribed ankle-foot orthoses to prevent said equinus. Spastic diplegia describes spastic CP in which muscle tightness predominantly occurs in the legs. The arms may be somewhat affected or not affected at all. Spastic monoplegia is one single limb being affected. Spastic triplegia is three limbs being affected. Spastic quadriplegia is all four limbs more or less equally affected. People with spastic quadriplegia are rarely able to ambulate without assistance and may not stand at all.