The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. source
The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.
The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances. source
The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances.
This adjustment of the lens is known as accommodation (see also below). source
This adjustment of the lens is known as accommodation (see also below).
The lens is more flat on its anterior side than on its posterior side. source
The lens is more flat on its anterior side than on its posterior side.
The lens is known as the aquula (Latin, a little stream, dim. of aqua, water) or crystalline lens. source
The lens is known as the aquula (Latin, a little stream, dim. of aqua, water) or crystalline lens.
In humans, the refractive power of the lens in its natural environment is approximately 18 dioptres, roughly one-third of the eye's total power. source
In humans, the refractive power of the lens in its natural environment is approximately 18 dioptres, roughly one-third of the eye's total power.
The lens is part of the anterior segment of the eye. source
The lens is part of the anterior segment of the eye.
In front of the lens is the iris, which regulates the amount of light entering into the eye. source
In front of the lens is the iris, which regulates the amount of light entering into the eye.
Posterior to the lens is the vitreous body, which, along with the aqueous humor on the anterior surface, bathes the lens. source
Posterior to the lens is the vitreous body, which, along with the aqueous humor on the anterior surface, bathes the lens.
The lens has an ellipsoid, biconvex shape. source
The lens has an ellipsoid, biconvex shape.
In the adult, the lens is typically circa 10 mm in diameter and has an axial length of about 4 mm, source
In the adult, the lens is typically circa 10 mm in diameter and has an axial length of about 4 mm,
The lens has three main parts: the lens capsule, the lens epithelium, and the lens fibers. source
The lens has three main parts: the lens capsule, the lens epithelium, and the lens fibers.
The lens capsule forms the outermost layer of the lens and the lens fibers form the bulk of the interior of the lens. source
The lens capsule forms the outermost layer of the lens and the lens fibers form the bulk of the interior of the lens.
The lens itself lacks nerves, blood vessels, or connective tissue. source
The lens itself lacks nerves, blood vessels, or connective tissue.
The lens fibers form the bulk of the lens. source
The lens fibers form the bulk of the lens.
In many aquatic vertebrates, the lens is considerably thicker, almost spherical, to increase the refraction. source
In many aquatic vertebrates, the lens is considerably thicker, almost spherical, to increase the refraction.
Glucose is the primary energy source for the lens. source
Glucose is the primary energy source for the lens.
The lens capsule is a component of the globe of the eye. source
The lens capsule is a component of the globe of the eye.
