retino- means eye or eyeball
3192cba9f6b95fceef3078efedd61412
What Is Retinoblastoma? Retinoblastoma is a cancer that starts in the retina, the very back part of the eye. It is the most common type of eye cancer in children. Rarely, children can have other kinds of eye cancer, such as medulloepithelioma, which is described briefly below, or melanoma.hey usually cause eye pain and loss of vision. The diagnosis is made when a doctor finds a tumor mass in the eye by using an ophthalmoscope (an instrument that helps doctors to look inside the eye). Like retinoblastoma, the diagnosis is usually made based on where the tumor is inside the eye and how it looks.
45e984bec753e84b462913b18193d185
Retinitis pigmentosa Retinitis pigmentosa is a genetic disorder of the eyes that causes loss of vision. Symptoms include trouble seeing at night and decreased peripheral vision. Onset of symptoms is generally gradual. As peripheral vision worsens, people may experience tunnel vision. Complete blindness is uncommon. Retinitis pigmentosa is generally inherited from a person's parents. Mutations in one of more than 50 genes is involved. The underlying mechanism involves the progressive loss of rod photoreceptor cells in the back of the eye. This is generally followed by loss of cone photoreceptor cells.
31da79c2681b06179fa8e0d45600edd3
Overview Retinoblastoma most commonly affects young children, but can rarely occur in adults. Your retina is made up of nerve tissue that senses light as it comes through the front of your eye. The retina sends signals through your optic nerve to your brain, where these signals are interpreted as images.
59554a0e162096588e0041feb618acc7
retinoic acid Definition of retinoic acid. : either of two isomers of an acid C20H28O2 derived from vitamin A and used in the treatment of acne:a : tretinoinb : isotretinoin.
996656fad80c8cc2b77861a7cceffc4c
Retin-A Micro Retin-A Micro (tretinoin) is a topical acne agent used for treating acne vulgaris, smoothening of fine wrinkles, and fading hyper-pigmentation of aged skin.
2f22db68b19a0a710cac027a915af149
- Fundus, retinal: The interior lining of the eyeball, including the retina (the light-sensitive screen), optic disc (the head of the nerve to the eye), and the macula (the small spot in the retina where vision is keenest).he fundus is the portion of the inner eye that can be seen during an eye examination by looking through the pupil. Fundus is the Latin word for the bottom. In medicine, fundus refers to the bottom or base of an organ.
f08d3f62b9c4cc19cd4cc2858a120297
retina : the sensory membrane that lines the eye, is composed of several layers including one containing the rods and cones, 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 — see eye illustration.
72dd1d9c5184509286fc01c1f6ffbbf0
The part of the eye whose function is similar to that of the aperture stop of camera.retina,iris,lens,cornea... In the eye's case, however, the film screen is your retina. Your retina is in the very back of the eye. It holds millions of cells that are sensitive to light. The retina takes the light the eye receives and changes it into nerve signals so the brain can understand what the eye is seeing. A Muscle Makes It Work
4b00e7c1f9fa0295ac2cdea3970ba6ff
eye eye. 1. The organ of the body with which an animal is able to see or sense light. In vertebrate animals, the eye occurs as one of a pair, each consisting of a spherical structure that is filled with fluid. Incoming light is refracted by the cornea and transmitted through the pupil to the lens, which focuses the image onto the retina. See more at compound eye, eyespot.
2e2da8dbf8477fce5fc518965b3c2878
Inducing labor 1 Giving you medicines to start contractions. 2  Providers often use a medicine called Pitocin to induce labor. 3  Pitocin is the man-made form of oxytocin, a hormone your body makes to help start contractions.
5d18fad7b1b4787a0c73df475f47fae4
Retinal Detachment Overview, Types Overview of Retinal Detachment. Retinal detachment is the separation of the retina from the choroid, a membrane dense with blood vessels that is located between the retina and the sclera (white of the eye). The retina is a thin layer of light sensitive tissue that lines the back portion of the eye.
ca534d28ffc1a6e62d4911f94c5cf634
Eye Cancer (Retinoblastoma) in Children about eye cancer retinoblastoma retinoblastoma is a rare eye cancer affecting children affecting about 300 children each year the disease occurs most often in children under the age of 4 years with 80 % of cases occurring under age 3 years and virtually none above age 6 yearsbout eye cancer retinoblastoma retinoblastoma is a rare eye cancer affecting children affecting about 300 children each year the disease occurs most often in children under the age of 4 years with 80 % of cases occurring under age 3 years and virtually none above age 6 years
7f4f17d788ef3730018606cd7945bd78
- Description: Central serous retinopathy is a slight accumulation of fluid in the macular (center of the retina) region of the eye that lies between the retinal pigment epithelium (the pigmented cell layer just outside the neurosensory retina that nourishes retinal visual cells) and the outer segments.
039d29c783b8ef6279ae5c38cb3c7443
retinal detachment retinal detachment, n a separation of the retina from the choroid in the back of the eye, usually resulting from a hole in the retina that allows the vitreous humor to leak between the choroid and retina.
12f24e992051931877935ec93725361d
- Tweet. : a vascular membrane containing large branched pigmented cells that lies between the retina and the sclera of the vertebrate eye —called also choroid coat — see eye illustration.
18ac49d42c6a61aa7c4f506a25d8743a
What Is Retinitis Pigmentosa Retinitis Pigmentosa (RP) refers to a group of diseases which cause a slow but progressive vision loss. In each of them there is a gradual loss of the light-sensitive retinal cells called rods and cones. Most forms of RP are inherited or genetic, though its signs do not necessarily appear in every generation.
4a2e186ae413503f3bdeec490d5718e5
retina Noun. 1. optic disk-the point where the optic nerve enters the retina; not sensitive to light. optic disc, blind spot. retina-the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve.
e0bccbfd7b06041e977b2ca525053aa2
- : a vascular membrane containing large branched pigment cells that lies between the retina and the sclera of the eye—called also choroid coat.
5b6846614be4471aa0c48544448c3aef
What is retinoblastoma? Retinoblastoma. Retinoblastoma is a rare cancer originating in the part of the eye called the retina. The retina is a thin layer of nerve tissue that coats the back of the eye and enables the eye to see.Most cases (about 60 percent) involve only one eye (unilateral), but in some children, both eyes may be involved (bilateral).fter a retinoblastoma has been detected, the doctor will determine the extent of disease in the eye and if the disease has spread (metastasized) outside the eye. This is called staging, and it helps doctors plan treatment.
adaa19e929a86491ba50af1be80bce2d
Retinal Detachment What Is Retinal Detachment? The retina is a light-sensitive membrane located at the back of the eye. When light passes through the eye, the lens focuses an image on the retina. The retina converts the image to signals that it sends to the brain through the optic nerve. The retina works with the cornea, lens, and other parts of the eye and the brain to produce normal vision. Retinal detachment occurs when the retina separates from the back of the eye.
c4df28a0830cba223e6a2a33cdbce624
Retina Retina can also refer to the Kodak Retina camera and the Apple Retina Display. The vertebrate retina (pron.: / ˈ r ɛ t ɪ n ə / RET-nuh, pl. retinae, pron.: / ˈ r ɛ t i n iː /; from Latin rēte, meaning net) is a light-sensitive layer of tissue, lining the inner surface of the eye.
02051c26ab21298689c553e481cd79da
Retinoblastoma This article is about the disease. For the protein, see Retinoblastoma protein. Retinoblastoma (Rb) is a rare form of cancer that rapidly develops from the immature cells of a retina, the light-detecting tissue of the eye. It is the most common malignant cancer of the eye in children, and it is almost exclusively found in young children.
12a8ccde034c0c2b50f13d44d343cd87
- Medical Definition of Fundus, retinal. Fundus, retinal: The interior lining of the eyeball, including the retina (the light-sensitive screen), optic disc (the head of the nerve to the eye), and the macula (the small spot in the retina where vision is keenest). The fundus is the portion of the inner eye that can be seen during an eye examination by looking through the pupil.
e611dde96fd1227ba7a1df39bff8d5e8
- retinoblastoma is a disease in which malignant cancer cells form in the tissues of the retina the retina is the nerve tissue that lines the inside of the back of the eye the retina senses light and sends images to the brain by way of the optic nerven intraocular retinoblastoma cancer is found in one or both eyes and may be in the retina only or may also be in other parts of the eye such as the choroid ciliary body or part of the optic nerve cancer has not spread to tissues around the outside of the eye or to other parts of the body
3e07f5c8b541fe9e7bbf9b4fc1636270
Love Sign Compatibility: Matches for Virgo Zodiac Sign Compatibility: Matches for LIBRA. Note: You are likely familiar with comparing sun signs to determine compatibility. It can be much more revealing to compare Venus signs in romantic relationships! Find out your position of Venus by sign here.
6120c84b919ddbec5e17860a66e1a93d
Retinitis pigmentosa Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina.etinitis Pigmentosa is the leading cause of inherited blindness, with approximately 1/4,000 individuals experiencing the non-syndromic form of their disease within their lifetime.