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Eye strain, also known as asthenopia (from astheno- 'loss of strength' and -opia 'relating to the eyes'), is a common eye condition that manifests through non-specific symptoms such as fatigue, pain in or around the eyes, blurred vision, headache, and occasional double vision. [1]
An unusual side effect of digoxin is a disturbance of color vision (mostly yellow and green) called xanthopsia. Vincent van Gogh's "Yellow Period" may have somehow been influenced by concurrent digitalis therapy. Other oculotoxic effects of digoxin include generalized blurry vision, as well as seeing a "halo" around each point of light.
A person's change in visual function when processing visual information in a complex environment, or trying to process a certain complex or unfamiliar visual target likely accounts for what looks like their visual ability changing from one day to the next, or from minute to minute. Feeling tired or unwell may also compound this challenge.
The NHS lists fatigue, feeling short of breath, loss of smell and muscle aches as among the most common symptoms. However, it adds there are many more, including tinnitus, brain fog, depression ...
Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Blue light that comes from screens like your phone, computer, or TV, has been found to decrease tiredness, sleep quality, and sleep duration, according to a 2022 review in Frontiers in Physiology.
The stroboscopic effect refers to the phenomenon that occurs when there is a change in perception of motion, caused by a light stimulus that is seen by a static observer within a dynamic environment. The stroboscopic effect will typically occur within a frequency range between 80 and 2000 Hz, [ 19 ] though can go well beyond to 10,000 Hz for a ...
This effect is known as the Ganzfeld Effect. In conditions of low illumination, especially in dimly lit environments, this phenomenon is related to how the eyes and the brain process visual information in insufficient lighting. The visual system becomes more sensitive to light and can amplify noise or minor changes in visual signals.