MEDICAL PHYSIOLOGY

Detailed explanation-1: -The lens works together with the cornea to focus light correctly on the retina. When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals.

Detailed explanation-2: -The eye’s lens sits just behind the iris. Just like a camera lens, the eye’s lens focuses light to form sharp, clear images. Light that has been focused through the cornea and aqueous humor hits the lens, which then focuses it further, sending the light rays through the vitreous humor and onto the retina.

Detailed explanation-3: -Your curved cornea bends the light into your eye. Your lens changes shape to bring things into focus. When you look at things that are far away, muscles in your eye relax and your lens looks like a slim disc. When you look at things that are close, muscles in your eye contract and make your lens thicker.

Detailed explanation-4: -Lens – the clear part of the eye behind the iris that helps to focus light, or an image, onto the retina. Macula – the sensitive area in the centre of the retina responsible for what you see ahead of you (central vision).

Detailed explanation-5: -The cornea and lens of an eye act together to form a real image on the light-sensing retina, which has its densest concentration of receptors in the fovea and a blind spot over the optic nerve. The power of the lens of an eye is adjustable to provide an image on the retina for varying object distances.