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

Role of exercise and drugs in management of diabetes, Q. Role of Exercise a...

Q. Role of Exercise and Drugs in management of diabetes? Aerobic exercise for at least 20-30 minutes four or more times a week is recommended. Exercise after meals is preferre

Classification of living beings, Q. What is the Biology field that studies ...

Q. What is the Biology field that studies the classification of living beings? The Biology field that studies the classification of living beings is termed as Taxonomy. Q.

Evaluate the short tailed hamster''s genotype, You are given a hamster that...

You are given a hamster that has a very short tail (dominant trait) a) Describe a cross that would allow you to determine the short tailed hamster's genotype b) What are the possib

Explain the maltose and cellobiose, Explain the Maltose and Cellobiose? ...

Explain the Maltose and Cellobiose? Maltose consists of two a-D-glucose molecules with the alpha bond at carbon 1 of one molecule attached to the oxygen at carbon 4 of the se

Ecosystem control, Ecosystem Control Another important aspect of ecosy...

Ecosystem Control Another important aspect of ecosystem functioning that is how it maintains its ecological balance. By now, it must be obvious to you that an ecosystem is a d

Define lipid-anchored proteins, A large number of integral proteins in euka...

A large number of integral proteins in eukaryotes do not traverse the membrane but are anchored in one or other leaflet of the bilayer through covalent attachment to a hydrocarbon

Explain elements of xylem in gymnosperms, The chief water conducting elemen...

The chief water conducting elements of xylem in gymnosperms are: 1. Vessels 2. Fibres 3. Transfusion tissue 4. Tracheids Tracheids

Common equine diseases, COMMON EQUINE DISEASES - 1 .       INFLUENZA ...

COMMON EQUINE DISEASES - 1 .       INFLUENZA OR PINK EYE - Pink eyes. Swallon eye lids. 2.       STRANGLES - Fever, dullness, depression, nasal discharge, lumpy a

Why alkaline phosphatases use water as a second substrate, Alkaline Phospha...

Alkaline Phosphatases use water as a second substrate. Why do we still treat their kinetics as if they were for a single-substrate reaction?

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