... Eye is a sense organ which receives light of various wavelengths reflected from objects at varying distances, the visual field, and converts it into electrical impulses. Optic nerves transmit these impulses to the brain where an image ...
... vision because they contain three different pigments, each absorbing light of different wavelengths (colours). One pigment is sensitive to red light, another to green and the third to blue. • A small area of the optical part of the retina ...
... eyes. The human eye, which is an elongated sphere about 1 inch in diameter, has three layers, or coats : the sclera, the choroid and the retina. Ciliary body Retinal blood vessels Cornea Anterior cavity (aqueous humor) Optic nerve Blind ...
... lens. This permits of both near and distant objects to be focused on the retina. • The lens is a transparent and flexible structure made of protein. It divides the eye into two chambers that are filled with colourless transparent fluids ...
... lens are called eyes. • Primate mammals, like monkeys, apes, humans acquired stereoscopic vision due to their highly evolved visual sensations. Structure of Human Eye Retina Choroid Sclera / Retinal blood vessels Optic nerve Blind spot ...
... visual receptors. ○ Eye is a sense organ which receives light of various wavelengths reflected from objects at varying distances, the visual field, and converts it into electrical impulses. Optic nerves transmit these impulses to the ...
... eye lens is controlled by — (A) Iris muscles (B) Ciliary muscles (C) Cornea (D) Vitreous humor Pigment found in rods is — (A) Keratin (B) Photosin (C) Retinene (D) Melanin Retina of human eye consists of— (A) Rods and cones (B) Rods ...
... Vision entails focusing light rays and converting light energy to neural messages to send them to the brain. When light enters the eye, the cornea, lens, and humours bend the light rays to focus them on the retina. The ciliary muscle ...
... retina, is especially modified to reflect back the light that falls upon it after filtering through retina, giving ... Optic nerve -> Sclera -> Choroid -> Retina 2. The low intensity light during night is detected by — (A) Cones (B) Rods ...
... retina because eyeball is too compact Aqueous humour cannot drain near the iris; fluid buildup presses capillaries that nourish nerve fibres in retina, damaging optic nerve, causing blindness Light focuses in front of retina because ...