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

Embryonic stem cells (es), E mb ryonic stem cells (ES): These a...

E mb ryonic stem cells (ES): These are pleuripotent cells of early embryo (blastocyst) capable of giving rise to all differentiated cells, including germ line cells. Em

Feed adulterants, Feed adulterants Adulteration of raw material is cre...

Feed adulterants Adulteration of raw material is creating a serious problem for manufacturing the good quality feed as the trading of raw ingredients is totally in unorganized

What is asexual reproduction, What is Asexual Reproduction? Asexual re...

What is Asexual Reproduction? Asexual reproduction occurs in prokaryotes through the process of binary fission. Primitive eukaryotes and plants also reproduce by various t

Explain coiling of garden pea tendrils, Coiling of garden pea tendrils arou...

Coiling of garden pea tendrils around any support is an example of: 1. Thigmotaxis 2. Thigmonasty 3. Thigmotropism 4. Thermotaxis Thigmotropism

Distinct ecological importance of species, The distinct ecological importan...

The distinct ecological importance of species supports functional diversity and has a direct bearing on the species composition of the site, and therefore on overall biodiversity.

Explain soybean protein, Explain soybean protein The need for the devel...

Explain soybean protein The need for the development of soybean protein concentrates stemmed primarily from two considerations: to enhance protein concentration and to improve

Zoology, difference between one girl and lungs two ribosomes and lysosomes ...

difference between one girl and lungs two ribosomes and lysosomes ?

Nutritional deficiency, Iron deficiency should be treated with supplemental...

Iron deficiency should be treated with supplemental iron. • Osteoporosis should be treated with calcium and vitamin D supplements. • Depending on individual factors, patien

Describe food applications of alginate, Food Applications of alginate O...

Food Applications of alginate One of the most unusual properties of the alginates has been the ability of soluble alginate salts to produce attractive, edible gels or jellies.

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