What is a long-sighted eye? State one cause of long sightedness. Name the lens used for correcting long-sightedness.

A long-sighted eye, also known as hyperopia, is a condition where distant objects may be seen clearly, but close objects appear blurry. This happens because the eye is either too short or the cornea has too little curvature, causing light to focus behind the retina.

One Cause of Long-Sightedness

One common cause of long-sightedness is a genetic predisposition, meaning it can run in families. Children may also be born with this condition due to the natural shape of their eyes.

Corrective Lens

To correct long-sightedness, convex lenses are used. These lenses help to bend light rays inward, allowing them to focus correctly on the retina, improving clarity for nearby objects.