US Medical Glossary · By body system
Eyes and ears
Ojos y oídos
This page lists the 23 terms of the US medical glossary that belong to this area, grouped by kind. Each line gives the English term, its Spanish equivalent and a one-line definition; the term's own page adds seven more languages, example sentences for an appointment and its sources. Terms are placed in an area by the MedlinePlus health-topic group of the source each entry cites.
Anatomy (10)
- Auditory Nerve — Nervio auditivo
- The auditory nerve, also called the vestibulocochlear nerve or the eighth cranial nerve, carries sound and balance information from the inner ear to the brain.
- Cochlea — Cóclea
- The cochlea is a snail-shaped, fluid-filled structure in the inner ear that converts sound vibrations into nerve signals your brain can understand.
- Cornea — Córnea
- The cornea is the clear, dome-shaped surface that covers the front of your eye.
- Eardrum — Tímpano
- The eardrum, also called the tympanic membrane, is a thin, cone-shaped membrane that separates the outer ear canal from the middle ear.
- Eustachian Tube — Trompa de Eustaquio
- The Eustachian tube is a narrow channel that connects the middle ear to the back of the throat and nasal cavity.
- Lens (Eye) — Cristalino
- The lens of the eye is a clear, flexible, oval structure located just behind the iris and pupil.
- Middle Ear — Oído medio
- The middle ear is the air-filled space behind the eardrum that transmits sound vibrations from the outer ear to the inner ear.
- Optic Nerve — Nervio óptico
- The optic nerve is a bundle of over a million nerve fibers that carries visual information from your retina to your brain.
- Orbit — Órbita
- The orbit is the bony socket in your skull that houses and protects your eyeball.
- Retina — Retina
- The retina is a thin layer of light-sensitive tissue lining the inside back of your eye.
Symptoms (7)
- Blurred Vision — Visión borrosa
- Blurred vision is when your eyesight appears out of focus, hazy, or unclear, and can affect one or both eyes.
- Double Vision — Visión doble
- Double vision (diplopia) means seeing two images of a single object.
- Ear Pain — Dolor de oído
- Ear pain is discomfort or aching inside or around the ear.
- Eye Pain — Dolor ocular
- Eye pain is any discomfort felt in, around, or behind the eye.
- Hearing Loss — Pérdida auditiva
- Hearing loss means a partial or complete inability to hear sounds in one or both ears.
- Tinnitus — Tinnitus
- Tinnitus is the perception of ringing, buzzing, hissing, clicking, or roaring sounds in one or both ears when no external sound is present.
- Vision Changes — Cambios en la visión
- Vision changes refer to any new or unexpected alteration in what or how you see.
Conditions (4)
- Cataracts — Cataratas
- A cataract is a clouding of the eye's natural lens, which lies behind the iris and pupil.
- Glaucoma — Glaucoma
- Glaucoma is a group of eye diseases that damage the optic nerve, usually due to elevated pressure inside the eye.
- Macular Degeneration — Degeneración macular
- Macular degeneration is a disease that damages the macula, the central part of the retina responsible for sharp, detailed vision.
- Retinal Detachment — Desprendimiento de retina
- Retinal detachment is a medical emergency in which the retina, the light-sensitive tissue at the back of the eye, separates from its supporting tissue.
Procedures (1)
- Cataract Surgery — Cirugía de cataratas
- Cataract surgery is a procedure to remove a cloudy lens from the eye and replace it with a clear artificial lens called an intraocular lens (IOL).
Maternity and children (1)
- Otitis Media (Ear Infection) — Otitis media
- Otitis media is an infection or inflammation of the middle ear — the space behind the eardrum.
Other areas of the glossary
- Heart and circulation — Corazón y circulación
- Lungs and breathing — Pulmones y respiración
- Digestive system — Sistema digestivo
- Brain and nerves — Cerebro y nervios
- Mental health — Salud mental
- Reproductive health and pregnancy — Salud reproductiva y embarazo
- Bones, joints and muscles — Huesos, articulaciones y músculos
- Blood and immune system — Sangre y sistema inmunitario
- Hormones, diabetes and metabolism — Hormonas, diabetes y metabolismo
- Skin, hair and nails — Piel, cabello y uñas
- General care: tests, procedures and medicines — Atención general: pruebas, procedimientos y medicamentos
- Kidneys and urinary system — Riñones y vías urinarias
- Insurance and billing — Seguro médico y facturación
This page is a language reference. It is not medical advice. Last reviewed: October 7, 2026