What is visual accommodation, Biology

Assignment Help:

What is visual accommodation?

Visual accommodation is the phenomenon of varying the curvature of the crystalline lens to make possible the variation of its refractivity to adjust the images of objects precisely onto the retina. The visual accommodation is accomplished by the action of the ciliary muscles.

The nitid vision depends on the visual accommodation as, if the images are not projected onto the retina but in front or behind it, they will appear blurred. The closer an object is more the ciliary muscles must compress the crystalline lens (enhancing its curvature); the more distant an object is more the ciliary muscles must relax.

 


Related Discussions:- What is visual accommodation

Define reagents for determination of iodine number of lipids, Define Reagen...

Define Reagents for Determination of the Iodine Number of Lipids? The following reagents are required to conduct this experiment. 1. Hanus solution (Iodine monobromide solut

What do you mean by zoonoses, Q. What are zoonoses? What are few examples o...

Q. What are zoonoses? What are few examples of zoonoses transmitted by birds? Zoonoses are human diseases transmitted by animals. Psittacosis, a bacterial disease, cryptococcos

Role of cell death, Role of cell death As development of the limb proc...

Role of cell death As development of the limb proceeds waves of death or necrosis of large masses of mesodermal cells occur in certain regions at different stages. This has be

Find the magnitude of the acceleration, A proton accelerates from rest in a...

A proton accelerates from rest in a uniform electric field of 650 N/C. At some later time, its speed is 1.3 106 m/s. Find the magnitude of the acceleration of the proton. M/s2

Sensor measures the current value of the controlled variable, In a properly...

In a properly functioning negative feedback system A. value of the controlled variable will always be very close to the threshold value when the system is in steady state.

Explain isomer, Isomer : Existence of different  compounds having  same ...

Isomer : Existence of different  compounds having  same  molecular form but different structural forms.

Basic structure of heart, Basic Structure of Heart The heart is small...

Basic Structure of Heart The heart is small organ about the size of one's fist, located in the middle and slightly to the left of the mediastinum in the chest. The wider t

How different are the concepts of neoplasia-tumor and cancer, Q. How differ...

Q. How different are the concepts of neoplasia, tumor and cancer? Not all tumor is neoplastic and not every neoplasia creates tumor. The Tumor is the generic name given to the

Listeriosis, Listeriosis The organisms have an extensive host range which ...

Listeriosis The organisms have an extensive host range which includes mammal, poultry, fish, crustaceans and ticks including man. The organism has been isolated from sheep, goats,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd