You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is true regarding Helmholtz theory of accomodation and explain in detail?
Accommodation: Mechanism by which eye changes its focal length by change in curvature of crystalline human lens According to Helmhotz theory during accommodation following changes takes place during accomodating for near vison Ciliary Muscles Contract(relaxation is all around 360o) Zonules Relax Anterior Movement of Ciliary Muscles Increase in thickness of lens Decrease in equatorial diameter Presbyopia results from the loss of lens elasticity with age. Note- sphincter pupillae are present all aorund the iris they increase / decrease the size of pupil ciliary muscles and zonules control the curvature of lens