Lens Essay

Safely Inserting and Removing a Contact Inserting a contact lens. A skill I never thought I would need until the day arrived for an annual doctor's appointment and my doctor told me I should go see an ophthalmologist (an eye doctor). Needless to say, after a visit with the burly eye doctor, I had gotten glasses and was still refusing to get contacts. I knew I probably needed them, but the thought of sticking my finger in my eye to but in a rubbery circular thing gave me the chills. It just wasn't

Introduction Lens Crafter was founded in 1983 by E. Dean Butler his vision was to open up an ophthalmologist company that provides a lab onsite and offers its customer with one hour services where the customer picks out its lenses and frames. With net sales per annum of $1.4 billion and more, Lens Crafter is one of the leading companies that provide services to its millions of global customers. The company’s headquarters are stationed in Mason Ohio. The company distributes optical solution services

Can you see this? I guarantee you can, otherwise you wouldn't be reading this sentence. But what is the importance of those questions? Well, the better question is, how do you define a “contact lens”, or “contacts”? Well, Urban Dictionary defines the normal everyday, prescribed contacts as being small pieces of plastic (which these days are usually pretty soft, as compared to the older, stiffer "hard" contacts) which are basically stuck on your eyeball as a replacement for glasses. They have grown

lenses which provide more oxygen to the cornea and overcome the disadvantages of current lenses used .[2] Soft contact lens has been introduce since 1971 by Bausch & Lomb, where are the most common type of lenses. Soft contact lenses were made by the development of water-loving polymers; these were called "hydrogels." More than a decade, a new version of soft contact lens has been introduced and commercially

Filter Your Photography With a 67mm Circular Polarizing Camera Lens Filter A polarizing filter is used in photography to darken the sky, manage image reflections, or suppress the glare that rises from large bodies of water. Photographers use polarizing filters to capture richer images without digital editing. Polarizing lens filters change the light balance of a photograph. How do you choose the right polarizing lens filter? You'll have to choose your filter based on your camera's design. Autofocus:

Professional photographers use expensive equipment to take beautiful pictures. Nice lenses make photos with bokeh (a Japanese word for blur) in the background, but these are usually pricy. Evin Oke, a professional photographer, says his $700 macro lens is “the best money I have ever spent” (picturecorrect.com). Macro lenses are designed to take close-up photos, thus enabling a photographer to make a small object appear larger. To make a photo more clear and crisp

photography, whether portraiture, landscape cityscape or any other, the lens is usually the most important part of your kit. Most will probably agree that selecting the perfect lens depends essentially on each photographer’s personal taste, needs, and budget. Below we have collected some thoughts about differences of various types of lenses. Prime Lenses vs Zoom Lenses A prime lens has a fixed focal length, while a zoom lens covers a range of focal lengths. Zoom lenses are often more expensive as

Real Field of View) and angular degrees (or Apparent Field of View). Real field of view is the angle of the visible field, seen without moving the lens, measured from the central point of the objective lens. The larger the value is, the wider the view-field available. Apparent field of view is the angle of the magnified field when you look through lens. The larger the apparent field of view is, the wider the field of view you can see even at high magnifications. With the conventional method used

The main way light is obstructed on its way to the retinal is by a cataract in the lens, which is the case in this patient. These can form two major ways: ultraviolet light damage and aging. Ultraviolet light damage leads to an abundance of free radicals. These free radicals act on the crystalline proteins and cause them to clump together

one of the world's greatest inventions. It made people learn about the creatures that are too small for the human eye to see normally. But sometimes, the image given by magnification is unclear. And here is a solution: colored magnifying lens. Colored glasses lens change the way people see, so why not improvise and add that feature to magnifying glasses? (not saying to create prescription magnifying glasses) One of the most basic tools for magnification is the magnifying glass, invented by Alhazen