Forced usage and general attention retraining can also be added to this list. By patching the eye that has the stronger connections to the dominant intact hemisphere, the hemisphere s over-influence should be reduced so attenuating the attentional bias. Attention should then be more evenly distributed over the left and right hemi-fields. 1.2.2 Fresnel prisms. Fresnel prisms are similar to wedge prisms but are lightweight and thin.
Prisms produce a rotation of the visual world.
The benefit of doing this is that patients with unilateral visual neglect are not aware that they are neglecting half of the world. By wearing prisms parts of the world are brought into view that were previously unsighted and so the patient s awareness of the contra-lateral portion of space may be increased. 1.2.3 Forced usage . Following major neurological damage a shock-like response occurs in the brain and precludes the use of the limb. After a period of time the effect of the shock diss greater detail y possible to express some movement with the impaired limb.