Rose K lens are designed specifically for people with keratoconus. They fit better over the coning of the cornea.
There is none
the name
The lens size is the only difference the XL have a bigger lens.
As such there is no difference between the lenses as long as prescription is same for both the eyes. So in mostly both the eyes have same prescription. If there's a difference, then mark the case with some indicators to distinguish. When you are getting your contact lens prescription the first time, the eye doctor will mark the box for you if you have a different precription for each eye. L means the contact lens will go in the left eye and R will go in the right eye.
The diffrence between thick and thin lens depends on your precription for your eyes.
one is single lens and the other is multi lens
"Lense" is a misspelling of "lens," which is the correct spelling referring to a curved piece of glass or other transparent material that focuses or disperses light rays.
A contact lens rests on the tear layer of the eye. If the tear layer has evaporated and the contact lens is stuck to the eye, SEEK IMMEDIATE ATTENTION. Never try removing a contact lens which is stuck to the eye. An Optometrist or Ophthalmologist is your best bet of removing the contact lens safely without damaging the cornea of your eye.
It's about a $300-400 USD price difference.
converging lens show virtual and real images while diverging shows virtual images.
the ocular lens sits higher up, closer to your eye. the objective lens are in the objective tube below the ocular lens
The pinhole camera has no lens. The human eye has a variable-focus lens.