Lens

At Atlantis Vision Center in Indian Harbour Beach, FL, we often get common, yet important, eye care questions. One such inquiry is the meaning behind the term “20/20 vision.” This term expresses normal visual acuity (in other words, the sharpness, or clarity, of vision) measured at a distance of 20 feet. People with 20/20 vision can clearly see the objects that should normally be seen at 20 feet. However, 20/20 does not necessarily mean perfect vision. The term only indicates the sharpness…

but as we are- or, as we are conditioned to see it”, which perfectly describes the ideas and thoughts of the psychological lens. By viewing novels, poems, and other writings through this lens, a deeper message can be found. When deciphering Shakespeare’s works, there are usually numerous different meanings incorporated that are only visible through the psychoanalytic lens. Throughout Shakespeare’s work of literature Macbeth, Macbeth is perceived as unaware when performing the actions displayed…

The cornea, or lens, is a transparent covering of material at the front of the eye, which creates an image of an object by mixing light in a process known as refraction (Klein). During refraction the light rays pass through the cornea and pupil and hit the lens that creates an image on the retina. The retina then sends the image to the optic nerve that makes you able to see. The eye can work like this because it has its own lens that is able to focus on an image that is…

Micolens are small lenses with a diameter smaller than 1 mm, they can work by diffraction, refraction or a combination of these two. When arranged regularly on a single substrate they form a microlens array. In order to be considered a good quality lens, microlenses must have qualities such as to low wavefront aberrations, consistency of focal length and pitch across the array, durability and low price. (Daly 2001) Microlens arrays have several applications, such as CCD arrays, digital…

if you place a lens at the right distance between the object and the photographic film, scattered light from each point of the object is brought back together (focused) on the film and forms an image. You would also have to block out extraneous light.…

The Effects of My Corneal Ulcer I was a contact wearer and I wore contacts for about four to five months until something execrable occurred. I thought it was just a common pink eye but, later found out that I had contacted a corneal ulcer which I knew would probably change my life forever. The use of contact lenses resulted in a corneal ulcer that contributed to the loss of my eyesight. I have regained my eyesight but I still have trouble seeing. If I didn’t go to the…

will be shown how it contributed to Reiner’s point of view from the interview around the globe, and how it would affect me during the Holocaust, the Great Depression, my life now, and how it impacts my parents and grandparents. The host of the Social Lens video, Alexis Devaneaux, took me around the globe to interview a mother and her son, Reiner who lives in Western Germany. Just like these…

The Fresnel lens was first invented by French physicist Augustine Fresnel and at first were a simple, beehive resembling contraption with a light source in the middle, but then it developed into something that mirrored a bull’s eye with a more powerful beam (Fresnel Lenses). The Michigan Lighthouse Conservancy went on to explain that the Fresnel lens was created for the sole purpose of installation within lighthouses. The efficiency and power of a Fresnel lens allowed its design to emit a source…

Look Through a Broader Lens For centuries, people have arrived on American land with little more than a suitcase and a dream of a better life. The promise of freedom and equal opportunity continues to attract foreigners to America, even though many thought that with hard work and dedication could lead an American immigrant to success. Having reached the promised land, immigrants find themselves faced with unimaginable obstacles. My family came to America to pursue a better life. Both of my…

converging lens and -5.5cm for the diverging lens. These focal distances theoretically make since because the converging lens causes the light rays to combine in front of the lens making it positive and the diverging lens causes the rays to spread apart after crossing through the lens making the focal point behind the lens and the focal length be negative. The incoming rays are the rays the light source sends through the lens and the transmitted rays are the ones that were passed through the…