Nyctalopia

Nyctalopia

Nyctalopia (pronounced: nikt-uh-LOH-pee-uh), also known as night blindness, is a condition that results in poor vision in low light or darkness. The term originates from the Greek words 'nykt-' meaning 'night' and '-alopsia' meaning 'blindness'.

Pronunciation

• IPA: /nɪktəˈləʊpiə/

Etymology

The term 'Nyctalopia' is derived from the Greek words 'nykt-' (night) and '-alopsia' (blindness).

Symptoms

People with Nyctalopia experience difficulty seeing in low light or at night. This can make tasks such as driving or walking in dim light challenging.

Causes

Nyctalopia can be caused by several conditions, including:

• Vitamin A deficiency
• Retinitis pigmentosa
• Cataracts
• Usher syndrome

Treatment

Treatment for Nyctalopia depends on the underlying cause. This may include dietary changes, medication, or surgery.

Related Terms

• Hemeralopia: Day blindness
• Photophobia: Sensitivity to light
• Myopia: Nearsightedness
• Hypermetropia: Farsightedness

See Also

• Visual impairment
• Blindness
• Eye disease

External links

• Medical encyclopedia article on Nyctalopia
• Wikipedia's article - Nyctalopia

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