The cornea is the transparent, dome-shaped outer layer of the eye that helps to focus light onto the retina, which is responsible for converting light into electrical signals that are sent to the brain.

Exposure to loud noises, ear infections, and aging are all common causes of hearing loss in children. It is important to protect children's hearing by limiting their exposure to loud noises and treating ear infections promptly.

Cataracts are a clouding of the lens of the eye, which can lead to blurred vision, glare, and difficulty seeing in dim light. Cataracts are a common cause of vision loss in older adults.

Glaucoma is a condition in which the optic nerve, which connects the eye to the brain, is damaged. This can lead to loss of peripheral vision, blurred vision, and pain in the eye. Glaucoma is a leading cause of blindness in adults.

Macular degeneration is a condition in which the macula, the central part of the retina, is damaged. This can lead to loss of central vision, making it difficult to read, drive, and recognize faces.

Amblyopia, also known as lazy eye, is a condition in which one eye is weaker than the other. This can lead to vision loss in the weaker eye if it is not treated early.

Retinitis pigmentosa is a condition in which the retina, the light-sensitive tissue at the back of the eye, is damaged. This can lead to night blindness, loss of peripheral vision, and eventually blindness.

Difficulty hearing high-pitched sounds, difficulty understanding speech in noisy environments, and tinnitus (ringing in the ears) are all common symptoms of hearing loss.

Audiometry is a test that is used to measure hearing loss. It involves playing sounds of different frequencies and volumes into the ear and asking the person to indicate when they can hear the sound.

Exposure to loud noises, ear infections, and aging are all common causes of hearing loss in adults. It is important to protect your hearing by limiting your exposure to loud noises and treating ear infections promptly.

Tympanic membrane perforation is a condition in which the eardrum is perforated. This can lead to hearing loss, pain in the ear, and discharge from the ear.

Hearing loss, tinnitus, and vertigo (spinning sensation) are all common symptoms of Ménière's disease, a condition that affects the inner ear.

Acoustic neuroma is a condition in which a non-cancerous tumor grows on the nerve that connects the ear to the brain. This can lead to hearing loss, tinnitus, and balance problems.

Getting regular eye exams, wearing sunglasses when outdoors, and eating a healthy diet are all common ways to prevent vision loss.

Limiting exposure to loud noises, wearing ear protection when exposed to loud noises, and treating ear infections promptly are all common ways to prevent hearing loss.