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

Explain about the microcolony deft, Explain about the Microcolony DEFT? ...

Explain about the Microcolony DEFT? It allows determination of viable cells. Food homogenate is filtered through a DEFT membrane and then placed on the surface of appropriate c

How does biogeography contribute to an evolution, How does biogeography con...

How does biogeography contribute to an understanding of evolution? In biogeography studies, same animals that seem to be closely related are adapted to dissimilar environments

Difference between ribosome and plant virus, Difference between Ribosome an...

Difference between Ribosome and plant virus -   RIBOSOME (RNA + Protein)   PLANT VIRUS (RNA + Protein)   1. Does not mul

Blood from a donor is sterile and stored in a sealed bag, Blood from a dono...

Blood from a donor is sterile and stored in a sealed bag, but it is still kept at 4°C. What is the advantage of keeping it at this low temperature?   At 4 °C, enzyme activi

Use of the activity chart, Use of the Activity Chart Organizing t...

Use of the Activity Chart Organizing teams and to decide its strength of different operations on mass production work. Establishing teams for maintenance and similar

Nursing diagnosis, Nursing Diagnosis Nursing diagnosis are judgemen...

Nursing Diagnosis Nursing diagnosis are judgements or conclusions reached by you after analyzing the data base that indicate a potential or actual human need that you as

Explain three parts of homogenate, Differential centrifugation divides cell...

Differential centrifugation divides cellular components based on the differences in their size and / or density. A tissue sample was homogenized and three parts (aliquots) of this

Embryology, Explain the gradient theoryof experimental embryology

Explain the gradient theoryof experimental embryology

Why fats, Why Fats, Oils and Sugar are important for human body? This g...

Why Fats, Oils and Sugar are important for human body? This group imparts flavour to the items and thereby improves the palatability. Items incorporating them do melt in the mo

Solution of ampicillin, How much ampicillin (sodium sal, mw=371.40) would y...

How much ampicillin (sodium sal, mw=371.40) would you dissolve in 400 mL of water to make 80 mg/ml solution of ampicillin?

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