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 transverse section of body of ascaris lumbricoides, Define Transvers...

Define Transverse section of body of ascaris lumbricoides? The transverse sections of male and female A, lumbricoides exhibit some differences based on their sex.   T.S. of Fema

Water stress - responses of plants to stress, Water Stress - Responses of P...

Water Stress - Responses of Plants to Stress Water stress in a plant can result from drought, excess salinity in the soil and very low or high temperatures. It has been found

Determine which is most stable, Hydrogen ( H) has 1 electron, carbond ( c) ...

Hydrogen ( H) has 1 electron, carbond ( c) has 6 electrons ; oxygen ( O) has electrons, Nitrogen ( n) HAS 7 electrons. Use the octet rule to determine which of the following is mos

Aves, What is aves?

What is aves?

Why the physician suspect, Kevin and his wife have been trying to have a ba...

Kevin and his wife have been trying to have a baby for the past three years. On seeking the help of a fertility specialist, Kevin learned that he has a hereditary form of male ster

Explain bidirectional superior vena cavo, Explain Bidirectional Superior ve...

Explain Bidirectional Superior vena cavo pulmonary shunt bidirectional glenn "This is a palliative produce where blood from superior vena cava is diverted to the pulmonary arter

Define intracellular fluid or the water within the cells, Define intracellu...

Define intracellular Fluid or the water within the cells? The intracellular Fluid or the water within the cells makes up about 40-4596 of the total body weight. Because the bod

How is carbon dioxide released by cellular respiration, How is carbon dioxi...

How is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungs? In vertebrates almost 70% of the carbon dioxide is trans

Function of glutamate, Q. Function of Glutamate? Glutamate It is the...

Q. Function of Glutamate? Glutamate It is the principal excitatory transmitter in the brain and is found throughout the central nervous system. Receptors Glutamate rec

Explain the quantitative techniques - microbial culture, Explain the Quanti...

Explain the Quantitative Techniques? Now that we are well-versed with the techniques involved in preparing and maintaining cultures, it is also important for us to learn how to

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