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A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision of the eye. [ 1 ] [ 7 ] Cataracts often develop slowly and can affect one or both eyes. [ 1 ] Symptoms may include faded colours, blurry or double vision , halos around light, trouble with bright lights, and difficulty seeing at night . [ 1 ]
Night vision is of lower quality than day vision because it is limited in resolution and colors cannot be discerned; only shades of gray are seen. [1] In order for humans to transition from day to night vision they must undergo a dark adaptation period of up to two hours [ 2 ] in which each eye adjusts from a high to a low luminescence "setting ...
Those with depression tend to have earlier occurrences of REM sleep with an increased number of rapid eye movements; therefore, monitoring patients' EEG and awakening them during occurrences of REM sleep appear to have a therapeutic effect, alleviating depressive symptoms. [179] This kind of treatment is known as wake therapy. Although as many ...
The researchers found that people who were exposed to high amounts of light at night had a 30% increased risk of developing depression, along with a higher risk of psychosis, bipolar disorder ...
Lack of sleep can exacerbate an existing mental health condition or increase your risk of developing depression, anxiety, bipolar, and more.
People may wish to take naps during the day, but unintentionally getting too much sleep will affect nighttime sleep. Physical activity is a treatment for Alzheimer's and a way to encourage night sleep. [5] Caffeine is a (fast-working) brain stimulant, but should be limited at night if a night's sleep is needed. [4] [5] [10]
Insufficient quality or quantity of night time sleep [5] Obstructive sleep apnea [6] Misalignments of the body's circadian pacemaker with the environment (e.g., jet lag, shift work, or other circadian rhythm sleep disorders) [7] Another underlying sleep disorder, such as narcolepsy, sleep apnea, [8] idiopathic hypersomnia, or restless legs syndrome
The antidepressant effect of sleep loss in some mice may have implications for the future of depression treatments. Here's why. Just 1 sleepless night could actually lead to a dopamine boost—and ...
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