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Distribution of rods and cones along a line passing through the fovea and the blind spot of a human eye [1]. A blind spot, scotoma, is an obscuration of the visual field.A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the ...
Underwater vision. Scuba diver with bifocal lenses fitted to a mask. Underwater vision is the ability to see objects underwater, and this is significantly affected by several factors. Underwater, objects are less visible because of lower levels of natural illumination caused by rapid attenuation of light with distance passed through the water.
Field of view of the human eye. Peripheral vision, or indirect vision, is vision as it occurs outside the point of fixation, i.e. away from the center of gaze or, when viewed at large angles, in (or out of) the "corner of one's eye". The vast majority of the area in the visual field is included in the notion of peripheral vision.
Phosphorous: 93 mg (7% DV) Potassium: 97 mg (2% DV) Selenium: 3 mcg (5% DV) Folate (Vitamin B9): 8 mcg (2% DV) Vitamin B6: 0.05 mg (3% DV) The number of minerals and vitamins you’ll get from ...
Aniseikonia. Aniseikonia is an ocular condition where there is a significant difference in the perceived size of images. It can occur as an overall difference between the two eyes, or as a difference in a particular meridian. [ 1] If the ocular image size in both eyes are equal, the condition is known as iseikonia. [ 2]
Your kids and their teachers will thank you. Make eye exams part of the back-to-school checklist. Your kids and their teachers will thank you. When a little boy burst into tears in her third-grade ...
On that note, if you have a smart baby monitor like the Owlet or the Nanit, you likely won't find the sleep insights on the SNOO app very helpful since you can get a deeper look at your baby's ...
Infrared wavelengths longer than 750 nm can produce changes in the lens of the eye. Glassblower's cataract is an example of a heat injury that damages the anterior lens capsule among unprotected glass and iron workers. Cataract-like changes can occur in workers who observe glowing masses of glass or iron without protective eyewear for prolonged ...