What are quarterly contacts?

What are quarterly contacts?

Quarterly contact lenses. Three-month contact lenses are lenses that are replaced every quarter of a year. Their surface is exceptionally smooth and resistant against debris accumulation while the material is less prone to wear off.

What does an aspheric lens do?

In photography, a lens assembly that includes an aspheric element is often called an aspherical lens. The asphere’s more complex surface profile can reduce or eliminate spherical aberration and also reduce other optical aberrations such as astigmatism, compared to a simple lens.

What is a translating contact lens?

In translating lenses, the near, far, and sometimes intermediate prescription zones are distinct, and your pupil moves from one to the other depending on the visual need of the moment. Your eye care practitioner can help you choose the right bifocal contact lens design for your lifestyle.

What is wettability contact lenses?

Wettability refers to how easily a liquid spreads over the surface of a contact lens. Clinically, this can be observed by viewing the interaction between the tears and the lens surface. In a laboratory setting, in vitro wettability can be quantified by measuring the “contact angle.”

What is the difference between monthly and yearly contact lenses?

Compared to daily contact lenses, monthly lenses actually don’t contribute as much to environmental waste since you only have to replace them once a month. That’s basically only 12 lenses per year which means a world of difference if a lot of people are using them.

What is the difference between 2 week and 1 month contact lenses?

The two-week contact lenses are very similar to the monthlies. You still take them out each and every night and put them in solution. In the morning, you’ll reuse the same pair again. Only difference is that they are thrown away after two weeks from opening the pair, not one month.

What is aspheric contact lens?

An aspheric lens has varying curvature across the surface of the lens rather than a uniformly spherical shape. Aspheric contacts can correct spherical aberration and reduce the blurring of vision. They can provide sharper, clearer, and brighter vision in some people.

What is aspheric IOL?

Aspheric IOLs are monofocal lenses that correct for spherical aberration. The result is a lens that will provide better overall vision than traditional IOLs, especially at night. Patients who choose an aspheric IOL can expect: Improved contrast sensitivity. Enhanced functional vision.

What is a segmented lens?

Segmented, Translating Multifocal Lens Design: Fitting, Evaluation, and Problem-Solving. The optics of these lenses are separated vertically, similar to progressive spectacle lenses, rather than in a concentric design like other multifocal contact lenses.

Are contact lenses bifocal?

What are bifocal contact lenses? Bifocal contact lenses are lenses that offer two different prescriptions in a single lens. One prescription is for close reading, and the other for normal, distance vision.

What is a good DK T?

Papas found that a Dk/t of 125 was necessary to avoid limbal injection. Morgan and Efron stated that Dk/t levels need to be approximately 20 and 33 for the central and peripheral portions of a soft lens, respectively, in order to avoid edema with daily wear. These Dk/t levels are summarized in figure 1.

What is oxygen permeability in contact lens?

Oxygen permeability describes the amount of oxygen that is able to pass through the contact lens to reach the eye. Hydrogel lenses generally feature a higher water content and low oxygen permeability, whereas silicone hydrogel lenses have a high oxygen permeability and relatively lower water content.

Why choose winwöhlk contact lenses?

Wöhlk provides contact lenses suitable for every eye: soft and rigid – and custom-made. The optician or ophthalmologist will decide in a personal consultation which contact lenses are suitable.

Where are Wöhlk lenses made?

All contact lenses from Wöhlk are produced in our company factory in Schönkirchen near Kiel. Engineers, physicists, chemists and software developers work under one roof. For us quality is workmanship made in Germany.

Who invented the contact lens?

Heinrich Wöhlk invented the contact lens in 1946. He did not want to wear heavy glasses. Today we are still connected with his spirit. We research and develop. We hone new ideas, we improve. We work on new manufacturing processes. We invent new products: Contact lenses with gentle edge profile, contact lens materials with continuous UV protection.

Why buy from Wolke?

Here at Wolke, our range of devices is clear and easy to understand with perfectly matched original cartridges and inks. With a sound financial footing and its own clear profile, in Germany and worldwide, Wolke is well placed to offer long-term support.