convex les so eat yello puppies!
A Concave lens is used to correct short- sightedness.
A convexo-concave lens is a lens that has one side convex (outward bulging) and the other side concave (inward curving). This type of lens can be used to correct myopia (nearsightedness) by diverging light rays entering the eye.
A concave lens is a lens that is thinner at the center and thicker at the edges. It is used to correct myopia (nearsightedness) by diverging light rays before they enter the eye, thus helping to focus the image on the retina. Concave lenses are often used in glasses or contact lenses for people with nearsightedness.
a concave lens is thin in the middle, but thick on the sides. It does this: it makes what you look at bigger because it spreads out light
Using concave lens the short sight problem could be rectified. Near sighted person cannot see the things far away. He can see things only so near to his eyes. The ray coming from the far object would form an image just before retina since the eye ball is elongated horizontally. So to make the image to move backward and fall on the retina, a concave lens is used to diverge the ray and finally the image would fall on the retina. Thus the remedy is possible with concave lens.
One uses a divergent lens to correct for shortsightedness.
A Concave lens is used to correct short- sightedness.
Convex lens is used to correct long sightedness (hyperopia). This lens helps to converge the light rays entering the eye, allowing the image to focus correctly on the retina.
A concave lens is used to correct nearsightedness, also known as myopia. This type of lens diverges light rays before they reach the eye's lens, thus moving the focal point back to the retina for clearer vision.
A coloured lens is made out of a thin, plastic lens that may be tinted to become different colours. The lens can be used to correct refractive error and other problems.
A convex lens converges light rays to a focal point, used to correct hyperopia (farsightedness) or create magnification in optical devices. A concave lens diverges light rays, used to correct myopia (nearsightedness) or reduce image size in optical systems.
Nearsightness, farsightness, and astigmatism
I believe it can be used for any lens. Just be sure to use the correct sign. Check the "lensmaker's equation" in Wikipedia, and the comments about what sign to use.
A concave lens is used to correct myopia (nearsightedness) because it diverges incoming light rays before they reach the eye's natural lens, helping to focus the image correctly on the retina. This helps myopic individuals see distant objects more clearly by increasing the focal length of the eye.
A convexo-concave lens is a lens that has one side convex (outward bulging) and the other side concave (inward curving). This type of lens can be used to correct myopia (nearsightedness) by diverging light rays entering the eye.
A concave lens is thinner in the center than at the edge. This type of lens curves inward, causing it to be thicker at the edges and thinner in the center. It is used to correct myopia or nearsightedness.
Concave lenses are thinner in the middle and thicker at the edges, causing light rays passing through them to diverge. This type of lens is used to correct nearsightedness or myopia. Convex lenses are thicker in the middle and thinner at the edges, causing light rays passing through them to converge. These lenses are used to correct farsightedness or hyperopia.