Explain astigmatism, Physics

Assignment Help:

Astigmatism:

In this defect the surface of eye is not perfectly spherical. The eye has different focal point in dissimilar planes and image of an object is not focused clearly on the retina.

Correction:

Astigmatism is corrected by asymmetrical lenses which have dissimilar radii of curvature in dissimilar plane.

 


Related Discussions:- Explain astigmatism

Angle, what is azimuth angle?

what is azimuth angle?

Mechanics, if acceleration vs time graph is given then how to calculate dis...

if acceleration vs time graph is given then how to calculate displacement

Electromagnetic induction, key headings in project file of electromagnetic ...

key headings in project file of electromagnetic induction

What is packing polymorphism, What is packing polymorphism When polymor...

What is packing polymorphism When polymorphism exists as a result of change in crystal packing, it is called packing polymorphism. Polymorphism can also result from the existen

Vertical circular motion, Vertical Circular Motion A mass is in circul...

Vertical Circular Motion A mass is in circular motion within the vertical plane. We show the weight and force exerted through the tension within the string.

How to improve power factor, Step to improve Power Factor By using stat...

Step to improve Power Factor By using static capacitor: Static capacitor is usually used to better the power factor of the power system. As the capacitor draws leading curre

Binding Energy per nucleon, The average energy needed to release a nucleon ...

The average energy needed to release a nucleon from the nucleus is known as binding energy per nucleon.   Binding energy per nucleon diffrence  Stability of nucleus

What is newton rings, If we permit monochromatic light to fall normally on...

If we permit monochromatic light to fall normally on the surface of lens, then circular interference fringes of radius r can be consider in the reflected light. This circular fring

Determine the axial and shear force, Determine the Shear Force in kN rounde...

Determine the Shear Force in kN rounded to 1 DP and Bending Moment in kN.m rounded to 1 DP at point C in the beam when the distance CB is P53 m. Then determine the axial force roun

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