0
What else can I help you with?
What is concave lenss?
concave lense is a piece of smooth glass that is thick from the edges and thin from centre and is used to diverge light rays.
Are concave lenss used as contact lenss?
yes, they are. Contact lens back surface isn't important for the dioptric power; the frontal sourface replaces the frontal sourface of the cornea. So the light angle of incidence is modified and the light focalize correctly on the retina.
What kind of lenss do you need in your spectacles or contact lenss?
Depends on the type of defect of the eye
Are red contacts lenss illegal?
No.
How critical are lenss for a camera?
Extremely critical.
How are lenss used in telescopes and microscopes?
to magnify it
What are the lenss?
A lens is a device that changes the direction of light.
Can i get my lenss replaced?
It is possible to do so - you will need to contact your optician.
Why is the objective lenss called the objective lenss on the microscope?
The objective lenses are the optical element that gathers light from the 'object' being observed and they focus the light rays to produce a real image.
What is the Function of the lenss on the microscope?
They enlarge and put into focus the object on the slide.
What do lenss do?
replace the natural lens that is removed during cataract surgery
What are individual lenss?
A pair of spectacles has an individual lense, one for each eye.
