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Diffraction spikes are lines radiating from bright light sources, causing what is known as the starburst effect [1] or sunstars [2] in photographs and in vision. They are artifacts caused by light diffracting around the support vanes of the secondary mirror in reflecting telescopes , or edges of non-circular camera apertures , and around ...
It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss. Procedures may include laser treatment, freezing, or surgery.
Providence Portland Medical Center, located at 4805 NE Glisan St. in the North Tabor neighborhood of Portland, Oregon, is a full-service medical center specializing in cancer and cardiac care. Opened in 1941, the hospital is licensed for 483 beds, and has over 3,000 employees. There are approximately 1,000 physicians on staff.
Legacy Good Samaritan Medical Center, commonly known informally as Good Samaritan Hospital or Good Sam, is a 539-bed teaching hospital located in northwest Portland, Oregon, United States. Founded in 1875 by the Episcopal Diocese of Oregon , it is a part of the Legacy Health . [ 1 ]
The hospital also includes the Center for Heart and Vascular Care, the first cardiac unit in the county. [12] In 2007, the center staffed 182 hospital beds and had 50,069 outpatient visits, as well as 38,804 emergency room visits. [18] That year there were 5,196 inpatient surgeries and 1,601 babies born at the hospital. [18]
It is difficult to resolve visual snow with treatment, but it is possible to reduce symptoms and improve quality of life through treatment, both of the syndrome and its comorbidities. [4] In some studies, lamotrigine as a treatment for visual snow syndrome only showed efficacy in 20% of patients, and in one study, patients using lamotrigine ...
Lens flare on Borobudur stairs to enhance the sense of ascending. A lens flare is often deliberately used to invoke a sense of drama. A lens flare is also useful when added to an artificial or modified image composition because it adds a sense of realism, implying that the image is an un-edited original photograph of a "real life" scene.
Glory around the shadow of a plane. The position of the glory's centre shows that the observer was in front of the wings. A glory is an optical phenomenon, resembling an iconic saint's halo around the shadow of the observer's head, caused by sunlight or (more rarely) moonlight interacting with the tiny water droplets that comprise mist or clouds.