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

What is the child kinetic energy at the top of the swing, A 35-kg child is ...

A 35-kg child is riding on a swing that rises to a maximum height of 0.80 m. Neglecting friction, what is the child's gravitational potential energy at the top of the swing?

Light absorbing materials in solar cells, All solar cells require a light a...

All solar cells require a light absorbing material contained within the cell structure to absorb photons and generate electrons via the photo voltaic effect. The materials used in

Inkjet printer, definition, Working principal, applications ??

definition, Working principal, applications ??

Which material has the highest melting point, Which of the following materi...

Which of the following material has the highest melting point (A) Copper. (B) Aluminium. (C) Tungsten. (D) Gold. Ans: Tungsten has the highest melting point.

Determine the electric potential, Finding the electric potential because of...

Finding the electric potential because of a continuous distribution of charge involves doing an integral. An integral is an infinite total of terms. In computing the electric poten

How much energy does the atom lose, An electron in a hydrogen atom makes a ...

An electron in a hydrogen atom makes a transition from E 3 to E 1 . How much energy does the atom lose?

what is radiation?, Energy that is radiated or transmitted in the form of ...

Energy that is radiated or transmitted in the form of rays or waves or particles.

The force exerted on second charge, a)  A charge of 3X10 -4 Coulomb at P (...

a)  A charge of 3X10 -4 Coulomb at P (1, 2, 3) and a charge of -10 -4 Coulomb at N (2, 0, 5) in a vacuum. We desire to measure the force exerted on second charge beacuse of  firs

Explain fungal prophylaxis in hsct, Fungal Prophylaxis in HSCT  A prosp...

Fungal Prophylaxis in HSCT  A prospective randomized double- blind trial in 882 adults and children compared prophylaxis with mica fungin 50 mg IV once daily (1 mg/kg for patie

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