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 lap design, Lap design There are many different flap designs f...

Lap design There are many different flap designs for implant surgery. In practically all situations a mid-crestal incision can be employed (Fig). This is especially so when th

Respiration, abnormal lung volumes and capacities

abnormal lung volumes and capacities

The difference between high and low c, How does brain recognize difference ...

How does brain recognize difference between high and low c and soft and loud sounds?

Effects on health - consequences of air pollution, Effects on Health - Cons...

Effects on Health - Consequences of Air Pollution Since the air pollutants are inhaled they attack various parts of the respiratory system on their route to air sacs. Once the

#title., what organ stores glycogen

what organ stores glycogen

What is the difference among white and red blood cells, What is the differe...

What is the difference among white and red blood cells? What are leukocytes? Red blood cells are erythrocytes and white blood cells are the leukocytes. Leukocytes are cells

Determine the food sources of fluoride, Determine the Food Sources of Fluor...

Determine the Food Sources of Fluoride? The major source of fluoride in most diets is water, with foods providing only about 25% of total intake. These include tea and marine f

Poultry and duck diseases-ranikhet disease, Ranikhet disease Ranikhet ...

Ranikhet disease Ranikhet disease, also known in the west as Newcastle disease, is a contagious and highly fatal disease of fowls caused by a virus of the genus Rubulavirus in

Define the different causes of under nutrition, Define the different causes...

Define the different causes of under nutrition ? 1. Scales (Screening Tool): The basic biochemical and anthropometric parameters are used in this screening. 2. Recognizing th

Classification of microorganisms, Q. Classification of microorganisms? ...

Q. Classification of microorganisms? The microorganisms use our food as a source of nutrients for their own growth. This, of course can result in deterioration of the food. By

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