retino-, retin- +

Angioretinographies are the visualization of the blood vessels of the retina after an injection of a nontoxic radiopaque or fluorescing substance has been applied.

Relating to the choroid coat of the eye and the retina.

The choroid is the middle layer of the vertebrate eye, between the retina and the sclera (tough white outer coat of the eyeball).

Pertaining to the ciliary body and the retina.

The ciliary body refers to the tissue that includes the group of muscles that act on the eye lens to produce accommodation and the arterial circle of the iris.

The inner ciliary epithelium (covering of internal and external surfaces) is continuous with the pigmented retinal epithelium, the outer ciliary epithelium secretes the aqueous humor.

1. The recording and interpretation of the voltage generated by the retina of the eye.

An electrode placed on a plastic contact lens is used to pick up voltage from the surface of the eyeball.

2. A test in which the electrical potentials generated by the retina of the eye are measured when the retina is stimulated by light.

The instrument used to do such electroretinography is known as an electroretinograph and the resultant recording is called an electroretinogram.

In an ERG, an electrode is placed on the cornea at the front of the eye. The electrode measures the electrical response of the rods and cones, and the visual cells in the retina at the back of the eye.

An ERG (electroretinograph) may be useful in the evaluation of hereditary and acquired disorders of the retina.

A normal ERG shows the appropriate responses with increased light intensity. An abnormal ERG is found in conditions; such as, arteriosclerosis of the retina, detachment of the retina, and temporal arteritis with eye involvement.

Vitreoretinopahy characterized by entry of protein and cells into the vitreous space of the eye: Sally knew that her eyes were in very bad condition and learned that she had a slowly progressive ocular disease called exudative vitreoretinopathy.

Translation: "It is easier to meet with Fortune, than to keep her."

Hereditary retinopathy.

Peculiar to the retina.

The oval areas of the sensory retina at the back of the eye balls: The center of macula retinae are the central fovea (small cup-shaped depressions or pits), which contain only retinal cones (light-sensitive cell types).

An inflammation affecting the optic nerve head and the posterior pole of the retina, with cells in the nearby vitreous (glasslike), usually producing a macular (central retina) star.

A disease of the optic disk and retina: One example of neuroretinopathy is the swelling of the optic disk and formation of serous and fibrinous precipitates in the retina, occurring in severe hypertension.

Inflammation of the retina due to exposure to intense light which may result in transient central scotoma.

A burn in the central retina of the eye from excessive exposure to sunlight; solar retinopathy: Photoretinopathy can be caused by the flash of an electrical short, or because of thermal damage by intense light which can then result in reduced visual acuity.

1. The innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light.
2. The delicate multilayered light-sensitive membrane lining the inner posterior chamber of the eyeball containing the rods and cones and connected by the optic nerve to the brain.

The sensory membrane that lines most of the large posterior chamber of the vertebrate eye, or retina, is composed of several layers including photoreceptor cells, and functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve.

In, pertaining to, or relating to the retina of the eye: "The doctor examined the retinal cells."