Additional types of files may also be using the SCU file extension. If you are aware of any other file formats using the SCU file extension, please contact us so that we can update our information accordingly.
What does SLR mean in photography? It stands for Single Lens Reflex It is a type of camera that uses 1 lens. A long time ago they used cameras with 2 lenses, 1 to see thru and 1 to take the picture with, but noâ¦w they use cameras with 1 lens to do both.
The red reflex refers to the reddish-orange reflection of light from the eye 's retina that is observed when using an ophthalmoscope or retinoscope from approximately 30 cm / 1 foot.This examination is usually performed in a dimly lit or dark room.Many eye problems may be detected by this test, such as:imultaneous red reflex test [edit]. The simultaneous red reflex test is used to view both reflexes at the same time. This can help determine if the patient has normal ocular alignment. In order to perform this test the patient and physician are normally approximately 2 to 3 feet away from each other.