Define the visual accommodation, Biology

Assignment Help:

Q. What is visual accommodation?

Visual accommodation is the phenomenon of varying the curvature of the crystalline lens to make possible the difference of its refractivity to adjust the images of objects exactly onto the retina. The visual accommodation is proficient by the action of the ciliary muscles.

The nitid vision depends on the visual accommodation since, if the images are not projected onto the retina but behind it or in front, they will appear blurred. The closer an object is more the ciliary muscles must compress the crystalline lens increasing its curvature the more distant an object is more the ciliary muscles must relax.


Related Discussions:- Define the visual accommodation

Peacock, exoskeleton of peacock

exoskeleton of peacock

What is the constitutional unit of proteins, What is the constitutional uni...

What is the constitutional unit of proteins? The constitutional units of proteins are the amino acids. Protein Structure Review - a) Image Diversity b) amino acid stru

Forebrain - diancephalon, DIANCEPHALO N - Less visible. Occupies on...

DIANCEPHALO N - Less visible. Occupies only 1% of brain's volume. Its lumen is diocoel or III ventricle. Roof is epithalamus . On it pineal body is present. Fl

Explain implant mobility and discomfort - implant interface, Implant Mobili...

Implant Mobility and Discomfort Implant mobility is an indication of the lack of osseointegration. Even if periimplant disease has progressed relatively far, implants may still

Describe induced ventricular arrhythmias, Q. Describe Induced Ventricular A...

Q. Describe Induced Ventricular Arrhythmias? The prognostic significance of ventricular ectopy provoked by stress testing after an MI is controversial. Complex ventricular arrh

Respiratory system - developmental changes, Respiratory System - Developmen...

Respiratory System - Developmental Changes after Birth The new-born's lungs are collapsed and need powerful breaths to inflate them; airways too are small, offering remarkable

What is the initial maintenance steps of implants, Initial Maintenance Step...

Initial Maintenance Steps of implants It is very essential, that from the beginning of the patient interaction regarding the implant therapy, through the diagnosis and planning

What is simple transposition in neonates, What is Simple Transposition in N...

What is Simple Transposition in Neonates ? A baby with this malformation needs to be operated without delay. A very cyanosed infant will require palliation by balloon arteries

Bio geographical evidences, The main points which is based on the seminar...

The main points which is based on the seminar topic Bio geographical evidences

Seed formation, Seed Formation A mature seed has seed coat, an embryo ...

Seed Formation A mature seed has seed coat, an embryo and reserve food material in the endosperm in monocots and in cotyledons in the dicots. Figure shows structure of dicots

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