Question

what is lateral shift on what factors does it depend

Answer 1

▪A lateral shift is when the patient's body is, either. actively or reflexively, avoiding a spinal nerve root compression or irritation through muscle spasm. ▪ Lateral shiftscan occur to the right, left, or both which is known as alternating scoliosis. ▪A lateral shift as described by McKenzie


The factors are the thickness of the glass plate and the angle of incidence of the light on the glass surface

Answer 2

$\underline \bold {Answer}$

When a denser medium is kept between two parallel faces inside a rare medium and a ray falls upon one of the two parallel faces reflects into the denser medium and comes out of another surface becoming parallel to the incident ray.

In the successive reflection the deviation at first surface is reversed at second surface but the emergent ray deviates literally.

The distance to what an emergent Ray devited from the direction of incident ray when suffers refraction at two parallel surfaces is called as lateral deviation/ displacement.

The lateral displacement/deviation increase with the increase in

• thickness

• angle of incident

• optical density