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

What is hdls, HDLs have the opposite function to that of LDLs in which they...

HDLs have the opposite function to that of LDLs in which they deleted cholesterol from the tissues.  The HDLs are synthesized in the blood mainly from components derived from the d

Phylum , General characteristics of phylum

General characteristics of phylum

Marine animals, Marine Animals The composition of body fluids of mari...

Marine Animals The composition of body fluids of marine invertebrates, including the ascidians are similar to seawater. Such animals need not expend much energy in regulating

Human physiology, which bones forms lhe non moving muscle attachment in

which bones forms lhe non moving muscle attachment in

What is the final comparative balance of these processes?, How the water ab...

How the water absorption volume and the water transpiration volume comparatively vary in plants in a day? What is the final comparative balance of these processes? Throughout t

How can the fermentation explain the origin of muscle cramps, How can the k...

How can the knowledge about fermentation explain the origin of muscle cramps and pains after intense physical exertion? A typical fermentation process because of oxygen scarcit

Describe the experimental approach using the tools, For many of the mammali...

For many of the mammalian Hox genes, it has been possible to determine that some of them are more similar to one of the insect HOM-C genes than to the others. Describe an experimen

Determine improper fit at the abutment - implant interface, Improper fit at...

Improper fit at the abutment/- implant interface It is very vital that the fit of the abutment is crosschecked radiographically prior to final delivery of the prosthesis. The m

Technique of assessment of growth and development, TECHNIQUE OF ASSESSMENT ...

TECHNIQUE OF ASSESSMENT OF GROWTH AND DEVELOPMENT Measurement of physical growth in children is a key element in evaluation of the health status of children. Physical grow

Connective tissue and its types, CONNECTIV E TISSUE Connective tiss...

CONNECTIV E TISSUE Connective tissues are formed by the mesoderm of the embryo. Three components are present in the connective tissues- (i) intercellular medium

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