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  2. Nyctalopia - Wikipedia

    en.wikipedia.org/wiki/Nyctalopia

    Nyctalopia (/ ˌ n ɪ k t ə ˈ l oʊ p i ə /; from Ancient Greek νύκτ-(núkt-) 'night' ἀλαός (alaós) 'blind, invisible' and ὄψ (óps) 'eye'), [1] also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases.

  3. Overview of common vision problems and medications - AOL

    www.aol.com/overview-common-vision-problems...

    Refractive errors, some of the most common types of vision problems, cannot be treated with medication, for example. Instead, glasses, contact lenses, and surgery are used to correct them as ...

  4. Is difficulty driving at night the same as night blindness? - AOL

    www.aol.com/lifestyle/driving-night-harder...

    According to the market research platform Gitnux, 10% of drivers reported having problems with night vision, while 62% feel less confident driving at night compared to during the day. Those ...

  5. Night vision - Wikipedia

    en.wikipedia.org/wiki/Night_vision

    Night vision is the ability to see in low-light conditions, either naturally with scotopic vision or through a night-vision device. Night vision requires both sufficient spectral range and sufficient intensity range .

  6. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    Poor quality of vision, Photophobia, Heliophobia, Depersonalization and Derealization [2] Usual onset: Visual Snow can appear at any time, but it commonly appears at birth, late teenage years, and early adulthood. Causes: Unknown, [3] hyperexcitability of neurons and processing problems in the visual cortex [4] [5] Risk factors

  7. Visual perception - Wikipedia

    en.wikipedia.org/wiki/Visual_perception

    This is different from visual acuity, which refers to how clearly a person sees (for example "20/20 vision"). A person can have problems with visual perceptual processing even if they have 20/20 vision. The resulting perception is also known as vision, sight, or eyesight (adjectives visual, optical, and ocular, respectively).

  8. Orthokeratology - Wikipedia

    en.wikipedia.org/wiki/Orthokeratology

    Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...

  9. Waking at the same time each night reveals details ... - AOL

    www.aol.com/article/2016/07/14/waking-at-the...

    There's a theory that states that waking at a certain time of night is actually a signal from your body about something going on inside. As you sleep, your body undergoes many states of activity.