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

How do hormonal tests to detect pregnancy work, Q. How do hormonal tests to...

Q. How do hormonal tests to detect pregnancy work? Laboratory tests to detect pregnancy commonly test for human chorionic gonadotropin (HCG) concentration in urine or blood sam

What is protein denaturizing, Secondary, tertiary, and quaternary structure...

Secondary, tertiary, and quaternary structures of proteins are spatial structures. Denaturizing is modification in any of these spatial structures that makes the protein deficient

Describe about coronary reactive hyperemia, Q. Describe about coronary reac...

Q. Describe about coronary reactive hyperemia? Myocardium depends almost completely on aerobic metabolism. Occlusion of a coronary artery even briefly produces an increase in c

Explain the advantages and disadvantages of insulin pen, Advantages of Insu...

Advantages of Insulin Pen - More convenient and easier to transport than traditional vial and syringe. - More accurate doses. - Easier to use for those with visual or fin

Methods of virus, How Viruses Multiply? Obligatory parasitism - Outsi...

How Viruses Multiply? Obligatory parasitism - Outside cells viruses are nonliving, inactive   particles but after entering into live cells these multiply fast by replication

What is isq, What is ISQ In resonance frequency analysis implant stabil...

What is ISQ In resonance frequency analysis implant stability quotient (ISQ) is use to quantify the frequency measurement of implants within a range between 3500 and 8500 HZ. I

The accident or incident theory - accident causation, The Accident or Incid...

The Accident or Incident Theory - Accident Causation Peterson when reiterating the significance of human factors added such factors as ergonomic traps, the decision to err and

Amelioration of mineral deficiency, Amelioration of mineral deficiency ...

Amelioration of mineral deficiency Performance of livestock in the tropics is mainly governed by the quality and quantity of nutrients provided in the diet. In most of the dev

Explain the repair mechanisms of brain, Explain the repair mechanisms of br...

Explain the repair mechanisms of brain Scientists are just beginning to understand how these innate repair mechanisms might be harnessed to treat disease. On leading edge of th

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