Definition: Connected to the thin layer of tissue at the back of the eye that receives light and sends images to the brain.

Example: The doctor examined the retinal images to check for any signs of disease.

Definition: A substance derived from vitamin A that combines with proteins to form visual pigments in the eyes, specifically in the retinal rods and cones.

Example: The retinal plays a crucial role in how we perceive light and color.

Definition: A type of pigment found in the retina, which is created from the oxidation of vitamin A alcohols and is important for vision.

Example: Retinene plays a crucial role in the process of converting light into visual signals in the eye.

Definition: A type of resin that looks like amber and is found with brown coal.

Example: The geologist discovered a piece of retinite while examining the coal deposits.

Definition: A condition characterized by inflammation of the retina, which can affect vision.

Example: The doctor diagnosed her with retinitis after she reported vision problems.

Definition: A type of cancer that forms in the retina of the eye, usually affecting young children.

Example: Doctors diagnosed the baby with retinoblastoma after noticing unusual eye movements.

Definition: A type of chemical compound that is related to vitamin A, often used in skincare and medicine.

Example: Retinoids are commonly used to treat acne and improve skin texture.

Definition: A form of vitamin A that is used in skincare products and supplements to improve skin health and appearance.

Example: Many skincare products contain retinol to help reduce wrinkles and improve skin texture.

Definition: A medical condition that affects the retina, which can lead to vision problems or blindness.

Example: Diabetes can lead to retinopathy, which may result in serious vision loss.

Definition: A medical test used to measure how light reflects off the retina to determine the refractive error of the eye.

Example: The doctor performed a retinoscopy to check if the patient needed glasses.

Definition: Relating to the connection between the retina and a part of the brain called the optic tectum, which is involved in visual processing.

Example: The retinotectal pathway is crucial for visual reflexes in many animals.