Human Sensory Systems: Sight | ClipArt ETC

The Human Sensory Systems: Sight ClipArt gallery offers 189 illustrations related to human vision.

$Lines for the detection of astigmatism. "The refracting surfaces of the eye acting together are equivalent in refracting power to a single, spherical surface of fairly short curvature. Frequently, however, the result is not the same as would be given by a perfect spherical surface, owing to inequalities in the curvature of the eye. In one direction the curvature may be greater than that at right angles to it. This tendency to a cylindrical form is called astigmatism. It interferes with the formation of perfect images and sometimes leads to serious eye strain in the effort to better the vision. Astigmatism may be detected by looking at black lines radiating from a point or at fine black concentric circles. Portions of the liens or circles appear gray and others black; the gray portions are out of focus. This defect is corrected by proper cylindrical glasses which equalize the curvature of the eye" — Newell, 1900$

Detection of Astigmatism

Lines for the detection of astigmatism. "The refracting surfaces of the eye acting together are equivalent…

An illustration depicting an astigmatism. An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp focus at two different distances.

Diagram Illustrating Astigmatism

An illustration depicting an astigmatism. An optical system with astigmatism is one where rays that…

The capsule of Ténon consists of a thin membrane which envelops the eyeball from the optic nerve to the ciliary region, separating it from the orbital fat and forming a socket in which it plays. Shown is the capsule of Ténon. The aponeurosis is seen from behind forward on the posterior hemisphere of the globe. Labels: a, Cellulofibrous intermuscular lamina; b, deep leaf of the sheath incised at the point where it leaves the muscle to fold itself on the posterior hemisphere when it forms the posterior capsule; d, Partly incised; c, Serous membrane.

Capsule of Ténon

The capsule of Ténon consists of a thin membrane which envelops the eyeball from the optic nerve…

Vertical section of the chorioid and inner part of the sclera.

Vertical Section of the Chorioid and Sclera

Vertical section of the chorioid and inner part of the sclera.

Section through the choroid coat of the human eye. Labels: 1, elastic membrane, structureless or finely fibrillated; 2, chorio-capillaris or tunica Ruyschiana; 3, Proper substance of the choroid with large vessels cut through; 4, suprachoroidea; 5, sclerotic.

Section Through the Choroid Coat

Section through the choroid coat of the human eye. Labels: 1, elastic membrane, structureless or finely…

The choroid, ciliary body, and iris of the eyeball.

The Choroid, Ciliary Body, and Iris

The choroid, ciliary body, and iris of the eyeball.

Cones and Rods of Retina

A. A cone and two rods from the human retina (modified from Max Schultze); B. Outer part of rod separated…

Convergence of Rays in the Aqueous Humor of the Eyeball

The convergence of light rays in the eyeball begins in the aqueous humor is perfected in the crystalline.…

Section of human cornea.

Section of Cornea

Section of human cornea.

The cornea, which is the anterior transparent portion of the eyeball.

The Cornea

The cornea, which is the anterior transparent portion of the eyeball.

Vertical section of the cornea.

Vertical Section of the Cornea

Vertical section of the cornea.

A portion of the corona ciliaris magnified. The ciliary processes and the ciliary folds.

Magnified Corona Ciliaris

A portion of the corona ciliaris magnified. The ciliary processes and the ciliary folds.

The organ of sight or vision.

Eye

The organ of sight or vision.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

A sketch of the human eye.

Eye

A sketch of the human eye.

An eye

Eye

An eye

An eye

Eye

An eye

An eye

Eye

An eye

An eye

Eye

An eye

The eye.

Eye

The eye.

The eye and eyebrow of a person's face used for seeing.

Eye

The eye and eyebrow of a person's face used for seeing.

A human eye, used for sight, pictured with an eyebrow.

Eye

A human eye, used for sight, pictured with an eyebrow.

An illustration of an eye.

Eye

An illustration of an eye.

A section of the human eye.

Eye

A section of the human eye.

"Next in order is the aqueous humor, b, e, in the middle of which is the iris, d, c. Behind the pupil we have the crystalline lens, f, and then the vitreous humor, h, filling all the interior of the ball of the eye. m indicates the retina, which is an expansion of the optic nerve, n. k is the choroid coat, a membrane interposed between the retina and the sclerotic coat; it terminates in form in a series of folds or filaments, g, called the ciliary ligament or process." —Wells, 1857

Eye

"Next in order is the aqueous humor, b, e, in the middle of which is the iris, d, c. Behind the pupil…

"a, sclerotic membrane; b, cornea; d, retina; o, optic nerve; v, vitreous humor." -Comstock 1850

Eye

"a, sclerotic membrane; b, cornea; d, retina; o, optic nerve; v, vitreous humor." -Comstock 1850

"The human eye-essential parts shown in section." —Croft 1917

Eye

"The human eye-essential parts shown in section." —Croft 1917

Section of the eye. 1: Optic nerve; 2: Retina; 3: Vitreous humor; 4: Crystalline lens; 5: Aqueous humor; 6: Cornea; 7: Iris; 8: Pupil.

Eye

Section of the eye. 1: Optic nerve; 2: Retina; 3: Vitreous humor; 4: Crystalline lens; 5: Aqueous humor;…

"Diagram of the eye. C., Cornea; a.h., aqueous humour; c.b., ciliary body; l., lens; I., iris; Sc., sclerotic; Ch., choroid; R., retina; v.h., vitreous humour; y.sp., yellow spot; n., optic nerve." -Thomson, 1916

Eye

"Diagram of the eye. C., Cornea; a.h., aqueous humour; c.b., ciliary body; l., lens; I., iris; Sc.,…

The human eye. Labels: a, crystalline lens; b, retina; c, cornea; d, sclerotic; e, choroid; g, ciliary processes; h, vitreous humor; k, pupil; i, iris; o, optic nerve.

Eye

The human eye. Labels: a, crystalline lens; b, retina; c, cornea; d, sclerotic; e, choroid; g, ciliary…

The eye and its muscles. Labels: o, the nerve of sight; a, one of the muscles of the eye.

The Eye and its Muscles

The eye and its muscles. Labels: o, the nerve of sight; a, one of the muscles of the eye.

Front view of left eye, with eyelid partly removed to show lachrymal gland (tear-producing gland), and lachrymal duct (tear duct).

Eye and Lachrymal Gland

Front view of left eye, with eyelid partly removed to show lachrymal gland (tear-producing gland), and…

Ciliary processes, as seen from behind. Labels: 1, posterior surface of the iris, with the sphincter muscle of the pupil; 2, anterior part of the choroid coat; 3, one of the ciliary processes of which about seventy are represented.

Ciliary Processes of the Eye as Seen from Behind

Ciliary processes, as seen from behind. Labels: 1, posterior surface of the iris, with the sphincter…

"Cross-section of the eye. Parts: co, cornea; I, iris; aq, anterior chamber of aqueous humor; L, lens; cp, ciliary process; sc, sclerotic coat; R, retina; ch, choroid; V, vitreous body; m, yellow spot; bs, blind spot; O, optic nerve." -Foster, 1921

Eye Cross-Section

"Cross-section of the eye. Parts: co, cornea; I, iris; aq, anterior chamber of aqueous humor; L, lens;…

"Development of the eye. 1. Section through first embryonic vesicle, showing outgrowth of optic vesicles (op.v.) to meet the skin; j.b., thalamencephalon; G., the gut. 2-4. Sections illustrating the formation of the lens (l.) from the skin, and the modification of the optic vesicle into an optic cup; R., retina; v.h., vitreous humour. 5. External aspect of embryonic eye; l., lens." -Thomson, 1916

Eye Development

"Development of the eye. 1. Section through first embryonic vesicle, showing outgrowth of optic vesicles…

Diagram of the eye. 1: Lines of light from end of arrow; 2: Small, inverted image in the eye.

Eye Diagram

Diagram of the eye. 1: Lines of light from end of arrow; 2: Small, inverted image in the eye.

The lids of the eye close in such a way as to leave a three-cornered canal between them and the surface of the eyeball. Labels: b, the surface of the front of the eye; a, the edges of the two lids.

Eye Lid

The lids of the eye close in such a way as to leave a three-cornered canal between them and the surface…

Optical Position and Size of Image Through Lens in Front of Eye

The illustration of putting lenses in front of the eye. The focal point of the image is reflected into…

"Section through the left eye, closed. 1, lifting muscle; 2, upper straight muscle; 3, optic nerve; 4, fatty cushion; 5, lower straight muscle; 6, vitreous humor; 7, lower cross muscle; 8, lower eyelid; 9, upper eyelid; 10, crystalline lens." -Foster, 1921

Eye Section

"Section through the left eye, closed. 1, lifting muscle; 2, upper straight muscle; 3, optic nerve;…

A section of the eye seen from within. Labels: 1, The divided edge of the three coats. 2, The pupil. 3, The iris. 4, The ciliary processes. 5, The scolloped border of the retina.

A Section of the Eye Seen from Within

A section of the eye seen from within. Labels: 1, The divided edge of the three coats. 2, The pupil.…

A section of the eye. Labels: 1, The sclerotic coat. 2, The cornea. 3, The choroid coat. 6, The iris. 7, The pupil. 8, The retina. 10, 11, Chambers or cavities of the eye that contain the aqueous humor. 12, The crystalline lens. 13, The vitreous humor. 15, The optic nerve. 14, 16, An artery of the eye.

A Section of the Eye

A section of the eye. Labels: 1, The sclerotic coat. 2, The cornea. 3, The choroid coat. 6, The iris.…

Artificial eye.

Artificial Eye

Artificial eye.

The eye, after cutting away the sclerotic coat and cornea, to show the vessels of the choroid coat; magnified.

Choroid Coat of the Eye

The eye, after cutting away the sclerotic coat and cornea, to show the vessels of the choroid coat;…

Section through the eye carried through the ciliary processes. Labels: 1, Cornea; 2, membrane of Descemet; 3, sclerotic; 3', cornea-scleral junction; 4, canal of Schlemm; 5, vein; 6, nucleated network on inner wall of canal Schlemm; 7, lig. pectinatum iridis, abc; 8, iris stroma; 9, pigment of iris; 10, ciliary processes; 11, ciliary muscles; 12, choroid tissue; 13, meridional and 14, radiating fibers of ciliary muscle; 15, ring-muscle of Muller; 16, circular or angular bundles of ciliary muscle.

Ciliary Processes of the Eye

Section through the eye carried through the ciliary processes. Labels: 1, Cornea; 2, membrane of Descemet;…

Cornea too Concave on Eye

"...and the cornea will become too flat, or not suffciently convex, to make the rays of light meet at…

Cornea too Convex on Eye

"If the cornea is too convex, or prominent, the image will be formed before it reaches the retina, for…

Plan of the eye seen in section. Labels: A, The Sclerotic Coat; B, The Choroid Coat; C, The Retina; D, The Optic Nerve; E, The Cornea; F, The Aqueous Humor; G, The Iris; H, The Ciliary Processes; I. The Crystalline Lens; K, The Vitreous Humor.

Diagram of the Eye

Plan of the eye seen in section. Labels: A, The Sclerotic Coat; B, The Choroid Coat; C, The Retina;…

"Diagram illustrating the Manner in which the Image of an Object is inverted on the Retina." — Blaisedell, 1904

Diagram of the Eye

"Diagram illustrating the Manner in which the Image of an Object is inverted on the Retina." — Blaisedell,…

"Exterior of Left Human Eye. 1, supercilium, or eyebrow; 2, palpebra superior, or upper eyelid; 3, 3, cilia, or eyelashes; 4, caruncula lacrymalis; 5, plica semilunaris; 6, pupil; 7, iris." -Whitney, 1911

Exterior of Left Human Eye

"Exterior of Left Human Eye. 1, supercilium, or eyebrow; 2, palpebra superior, or upper eyelid; 3, 3,…

The right eye in horizontal section.

Horizontal Section of Eye

The right eye in horizontal section.

c, ciliary nerves going to be distributed in iris; d, smaller ciliary nerve; e, veins known as vasa vorticosa; h, ciliary ligament and muscle; k,l, converging fibres of iris; o, optic nerve.

Human Eye

c, ciliary nerves going to be distributed in iris; d, smaller ciliary nerve; e, veins known as vasa…

The iris and adjacent structures seen from behind. 1, the divided edge of the three coats, the choroid being the dark intermediate one; 2, the pupil; 3, the posterior surface of the iris; 4, the ciliary processes; 5, the scalloped anterior border of the retina.

Human Eye

The iris and adjacent structures seen from behind. 1, the divided edge of the three coats, the choroid…

An illustration of a human eye.

Human Eye

An illustration of a human eye.