Lesson Summary. In summary, skeletal muscles are attached to bones on each end by tendons. The origin is the fixed attachment, while the insertion moves with contraction. The action, or particular movement of a muscle, can be described relative to the joint or the body part moved.Groups of muscles are involved in most movements and names are used to describe the role of each muscle involved.esson Summary. In summary, skeletal muscles are attached to bones on each end by tendons. The origin is the fixed attachment, while the insertion moves with contraction. The action, or particular movement of a muscle, can be described relative to the joint or the body part moved.
The most common complication of cataract surgery is clouding of the part of the lens covering (capsule) that remains after surgery, called posterior capsule opacification. If the cloudiness affects your vision, you may choose to have a laser surgery called Nd:YAG posterior capsulotomy to correct this problem.
Corneal opacity is a disorder of the cornea, the transparent covering of the eyeball, which can cause serious vision problems.Corneal opacity occurs when the cornea becomes scarred. This stops light from passing through the cornea to the retina and may cause the cornea to appear white or clouded over.Causes: Infection, injury, or inflammation of the eye are the most common causes of corneal opacity. Risk Factors: The following factors increase your chances of developing corneal opacity.his stops light from passing through the cornea to the retina and may cause the cornea to appear white or clouded over. Causes: Infection, injury, or inflammation of the eye are the most common causes of corneal opacity. Risk Factors: The following factors increase your chances of developing corneal opacity.