BIOL 4041 Lecture Notes - Lecture 20: Angular Resolution, Airy Disk, Snellen Chart
Document Summary
Lens-maker"s equation: gives the focal length in terms of properties of the lens. The radius of curvature of each side of the lens and the refractive index of the. 1/f = (n-1)(1/r1 1/r2) material that the lens in made of. Thin lens equation: related image-object-focal distance (difference between focal place and where the object is actually imaged, 1/f = 1/i + 1/o. Hyperopia (farsightedness: focal point is behind the back of the eye; need to have a positive lens to x (increases the optics of eye by increasing bending of light rays) Myopia (nearsightedness: focal point is before the back of the eye; need a negative lens to x (decreases the optics of the eye by decreasing the bending of light rays) Emotropia - eye focuses things where it is supposed to: cannot overcome this; can be diagnosed very early on.
