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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 ...
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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.
St. Vincent's Medical Center Southside is a not-for-profit, faith-based hospital located in the southern part of Jacksonville, Florida. It is a member of St. Vincent's HealthCare and is affiliated with Ascension Health. Founded as St. Luke's Hospital in 1873, it was Jacksonville's first private hospital and is Florida's oldest private hospital ...
Impressed by the medical treatment received by members of Jacksonville's Davis family (then owners of the Winn-Dixie supermarket chain) at Mayo Clinic in Minnesota, they rallied community and corporate support to bring Mayo Clinic to Jacksonville and donated a 392-acre parcel off San Pablo Road on which Mayo Clinic opened an outpatient consultation center on October 6th, 1986.
Illusory palinopsia is often worse with high stimulus intensity and contrast ratio in a dark adapted state.Multiple types of illusory palinopsia often co-exist in a patient and occur with other diffuse, persistent illusory symptoms such as halos around objects, dysmetropsia (micropsia, macropsia, pelopsia, or teleopsia), Alice in Wonderland Syndrome, visual snow, and oscillopsia.
The St. Johns Light is an active lighthouse in Jacksonville, Florida, marking the mouth of the St. Johns River. [1] [2] [3] Built in 1954, it is located on Naval Station Mayport in the Mayport area. It was erected to replace a lightship, which itself replaced the still-standing Old St. Johns River Light. It is the fourth lighthouse built at the ...
The Jacksonville Children's Museum became the Jacksonville Museum of Arts and Sciences in 1977 and six years later, they were accredited by the American Alliance of Museums. The name was changed to Museum of Science and History in 1988 and 37,500 square feet (3,480 m 2 ) of space was added, including the planetarium then known as the Alexander ...