Being told you have an astigmatism in one or both of your eyes is nothing to fear. After all, most people have some degree of astigmatism, and many are actually born with the condition.

Because astigmatism is often inherited, most people who have the problem were born with it. It can also occur following an eye injury, eye disease, or surgery.

Toric contacts have a thicker zone that keeps them from rotating when they’re in your eyes. It also helps you orient the lenses the same way every time, so you can count on consistent visual acuity.

Bright green-beam laser – up to 4X brighter than standard red beams, the leveling laser has a working range of up to 200 Ft. diameter; Built-in VisiMax ...

Apoptosis, often called programmed cell death, is a carefully regulated process that is part of normal development and homeostasis. Apoptosis is morphologically and biochemically distinct from necrosis, which is conversely called accidental cell death. Dysregulation of apoptosis is implicated in disease states such as cancer, autoimmune disease and degenerative conditions. Apoptosis consists of an orderly…

First Optic

No matter what type of astigmatism you have — corneal or lenticular — objects both near and far may appear blurry and distorted. A moderate or severe astigmatism may also cause eye strain, squinting, chronic headaches, and poor night vision.

An astigmatism can also occur in the lens of your eye, which sits just behind your cornea. If you’re diagnosed with a lenticular astigmatism, it means you have a misshapen lens.

Contact lenses are another excellent option for many people with a moderate amount of astigmatism. In fact, some people with an astigmatism do better with contact lenses than with eyeglasses, because the contacts may provide clear vision and an unobstructed, wider range of view than glasses.

Lynnea has a PhD in Molecular Biology from University of California, Los Angeles, and is currently working as Medical Communications Senior Manager – Oncology at Amgen.

Most people who choose glasses to correct an astigmatism only need a single-vision lens that provides clear vision at all distances. People who are past the age of 40 are more likely to require a bifocal or progressive vision lens.

Jun 21, 2024 — Refractive Objective Lenses are microscope lenses made of transparent materials like glass. They use refraction, not reflection, to focus light ...

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Lightoptics

Because toric contact lenses must be placed on your eye in a specific way, achieving an exact fit is extremely important. Toric lenses have a middle axis, much like the equator that circles the middle of the earth, to keep your line of vision clear. If your lenses don’t fit well, they’ll do little to improve your vision.

A Spot of History Most of the biomedical methods used started as a curiosity. Then the one-off gains a limited use, the technology then progresses until its use becomes widespread. Just think about the arch from the curious polished glass spheres, used by Antony Levnhook to look at animalcules, to modern microscopes. The same story…

Having an astigmatism may complicate your prescription just a bit, but it won’t prevent you from getting the type of corrective lens that fits your lifestyle.

Rigid gas-permeable contact lenses maintain their regular shape when they’re over your cornea, allowing them to make up for the cornea’s irregular shape and make your vision sharper.

Phosphorylation Equals Cell Signaling! How do cells communicate and respond to their environmental cues? This question has been on the hot list for scientists ever since the discovery of the cell. Cells use signaling cascades based on biochemical reactions to deliver or receive messages. How cool is that? The major secret of cell signaling was…

Lasers were once called “a solution looking for a problem.” The word—which is an acronym for Light Amplification by Stimulated Emission of Radiation—used to conjure up images of deadly weapons from Sci-Fi movies and TV series. However, their increasing use in everyday life, first in CD players and then in barcode scanners and pointers, have…

A polarizer is kind of optical filter that can transmit light of a particular polarization and block light of other polarizations. From: Luminescence ...

Sep 19, 2022 — Figuring out the total magnification power of your microscope is easy: just multiply the power of your objective lens by your ocular lens. For ...

Standard soft contact lenses aren’t effective for correcting an astigmatism, but rigid gas-permeable contact lenses can be a viable option for people with a mild astigmatism.

The zoom body is the core of stereo and zoom microscopes. When zooming, lenses have to be positioned precisely. Until now, a metal component milled with great ...

Test yourself Diffraction Grating Equation The pattern produced by a diffraction grating can be described by the diffraction grating equation.

First lightoptics

Most forms of astigmatism are easily treatable. Many people opt for eyeglasses, which are made with a special cylindrical lens prescription that offsets the astigmatism.

An astigmatism usually means the cornea of your eye has an irregular shape that causes your vision to be blurry at any distance. A minor astigmatism may not cause any vision problems at all, but a significant astigmatism needs to be corrected.

When your cornea isn’t evenly curved, its irregular shape causes light to refract incorrectly, leading to blurry vision. A misshapen cornea is called a corneal astigmatism.

In my previous article I discussed steps you can implement to ensure that a sample is ready for cell sorting. But now it’s time to make sure the sort worked. Here are a few sorting checks and measures to ensure that all’s well that ends well. Post-sorting Checks and Measures Re-evaluate Your Catch Tubes Sorting…

Telescopeoptics

Sep 3, 2020 — The wavelengths experience different refractive indexes in the glass fiber, causing the shorter wavelengths to travel faster than the longer ...

Jul 5, 2020 — Barrel distortion is typically present on most wide angle prime lenses and many zoom lenses with relatively short focal lengths. The amount of ...

Toric contact lenses are often the best choice for contact lens wearers with an astigmatism, because they’re specifically designed to address the problem. The special shape of a toric lens creates different refractive, or focusing, powers that can help correct either a corneal or a lenticular astigmatism.

If you need contact lenses to help correct an astigmatism, we can help. Smart Eye Care offers toric fittings and can help you choose the right type of toric lens for your lifestyle. Toric lenses are available as soft or hard lenses, and come in every wear schedule, ranging from dailies to disposables and beyond.

At Smart Eye Care in Brooklyn, New York City, we’ve helped countless patients with a moderate amount of astigmatism find the right corrective lenses — including custom-fit contact lenses specifically designed to correct astigmatism.

FlightOptics

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There are some wonderful toys in the lab that enable us to open up a whole new world in science. One of those is a rather pricey and an incredibly sensitive laser-based apparatus capable of counting and sorting cells, detecting biomarkers, and engineering proteins: the flow cytometer. By propelling cells through the path of the…

Your cornea is a clear, round dome that covers the iris and pupil of your eye. A normal, healthy cornea is smooth and curves equally in all directions, allowing light to focus properly onto the retina at the back of your eye. This is what allows you to see clearly.

A simple, therapeutic, inexpensive, way to correct several visual disorders. • Provide an immediate correction. • They are more comfortable, more cosmetically ...