Abbe's number is an important parameter for the correction of color errors in lenses: It describes the relationship between the average deflection angle in air and the main dispersion (color splitting). Because of these relationships, not every refractive material is physiologically suitable.

Image errors = In ophthalmic optics, all deviations from the ideal image (punctual, color correct and true to scale) are referred to as image errors.

Acetate, or acetate is a classic material for eyeglass frames. The starting materials are cotton fibers and wood, these are first esterified, i.e. mixed with a solvent to form a paste. Acetate must then harden.

Adaptation is "adapt", in the optical sense: adaptation of the eye to different situations, glare & pupil diameter!

Choroidal melanoma is the most common ocular primary malignancy in adults. Therapy includes primarily surgical and radiotherapeutic approaches.

It is something?

The declining accommodation/adjustment mainly caused by the loss of elasticity of the natural lens of the eye/lens cristalina. This is known as presbyopia/age (far)sightedness.

Age-related macular degeneration (AMD) develops slowly over many years. First clues are difficulty reading or recognizing faces and details. Parallel straight lines no longer appear parallel, but mostly bent or distorted towards the middle. These phenomena are the result of a dysfunction of the central retina/foveola/macula, which is important for seeing details. Characteristic deposits/drusen appear in the early stages.

The accommodation of the eye is achieved by changing the curvature of the eye lens. In the eye lens (lens cristalina) there is no cell exchange, the tissue hardens from the center. With advancing age, the lens of the eye (Lens Cristalina) loses flexibility, the ability to curve/elasticity decreases, one can see less and less at short distances, one speaks of presbyopia when a comfortable reading distance can no longer be sharply focused.

The Amsler charts are used to assess central and paracentral disorders caused by changes, especially in macular diseases. Depending on the test chart, the patient assesses whether the grid is complete and whether all lines appear even or weaker, wavy or distorted in places.

An anamorphic = distorted image is created by different image scales in lenses. For example, a circle standing perpendicular to the optical axis is shown as an ellipse, a square as a parallelogram or, if the principle meridian and lateral correctness are correct, as a rectangle.

Asphere describes an optical surface shape that deviates from the sphere.

A|stigma|tism: not punctiform. Also called astigmatism, less charmingly astigmatism. In relation to the eye, it is due to an imbalance in the cornea and/or the lens of the eye. When correcting with glasses or contact lenses, spherocylindrical combinations are used.

Atropine has long been used as a pharmaceutical intervention, since it is accompanied by mydriasis=pharmacological dilation of the pupils and paralysis=complete motor paralysis of individual muscles or muscle groups of an organ or several body regions. Depending on the dosage (0.01 to 1.0%), different effects are achieved.

With a two-camera 3D video centering system, we determine the detail points for high-precision lenses. This leads to the largest possible field of vision and best tolerability.

Retina(lat. net)= retina of the eye, tunica interna bulbi consists of a light-sensitive part (pars optica) and a blind part (pars ciliaris). The pars optica contains the sensory, ganglion, and supporting cells. It is to be regarded as a submitted part of the brain, as here a physical light impulse is transformed into an electrical firework.

In order for the eye to retain its shape, an individual pressure is necessary. This is regulated by the aqueous humor. The intraocular pressure can rise if the balance between the production and drainage of aqueous humor is no longer right.

More safety on the road!

Frequently touched surfaces are extremely interesting in connection with medicine and hygiene. Precisely because microorganisms, bacteria, viruses and fungi are always involved in triggering infectious diseases.

When determining the eyeglass, a specific beam path is generated by the combination of glasses in a precision trial frame, which causes the best correction of the ametropia. The glasses in the finished glasses should provide the same optical effect in a spectacle lens.

The story of the glasses fraud makes the rounds. Since the business was founded in 1997, every lens has been listed exactly on the invoice and differentiated in ALL details. Manufacturer, material, brand name, manufacturer name, coating are listed on each invoice. Brand engraving and manufacturer documents are already helpful. This is not a matter of course.

Bifocal, if you separate the word it gets easier. In ophthalmic optics, this describes a lens with two focal lengths or focus. There are effective alternatives to multifocal lenses in both eyeglass optics and contact lenses.

The benefit of education is that you can play dumb. The opposite is more difficult(MT)

According to the current state of medical research, too much short-wave, high-energy blue light poses a long-term risk. Smartphone and tablet screens are meant here, they accompany us throughout the day. This light can definitely have unfavorable effects, ranging from problems falling asleep and sleeping through the night to metabolic disorders. We know the damaging potential of ultraviolet radiation from the skin. Accordingly, there are lenses with blue light/blue cut filters. Ask us!

We will not turn the development upside down - nor do we want to!

Digital lifestyle brings a new field of activity for the eyes and optics: problems with the use of these devices.

For the many types of ametropia, there is a large number of sometimes highly specialized lenses.

Moist lens cleaning cloths clean ALL lenses without hesitation, say the manufacturers of these cloths - but not the manufacturers of the lenses! Wet wipes are not ideal, especially for polycarbonate lenses. These wipes absorb dust particles and leave very fine scratches, similar to sandpaper.

On the way to the best glasses, we offer the 3D determination of the centering data via two cameras. Everyone is asymmetrical, we determine detail points for individual lenses that are manufactured with micrometer precision.

Help us! - We accept your used glasses.

The highly transparent and avascular cornea of an adult has an average size of 11.6 mm horizontally and 10.7 mm vertically. The front surface has an average radius of 7.8mm, the back surface 6.8mm. It thus achieves an optical refractive power of 43 dioptres. In physiological eyes, the radii are between 7 and 8.5mm with a maximum between 7.4 and 8.2mm, like the diameter of the cornea, the radius is subject to almost no change from the second year of life. The cornea usually flattens out continuously towards the periphery, so that the radii become steadily larger.

When a virus with the scientific name SARS-Covid-19, CoV-2 appeared in a now world-famous Chinese city and province in December 2019, no one suspected its effects on us. The first were already described in the 1960s.

The 20-20-20 Rule: Look 20 feet away for 20 seconds every 20 minutes.

Individual biometric measurement of the eye

hard edged & soft fuzzy geodes.

Dystrophy, nutritional disorder, deficient supply of nutrients to an organ.

We support OneDollarGlasses e. v.

Endothelial cells and their distribution on the back of the cornea are of crucial importance for the transparency of the cornea. Endothelial cell decompensation is observed in association with misuse of contact lenses, LASIK and cataract surgery.

Entspiegelung - Anti reflection coating -

It has evolved rapidly since it emerged in the late 1980s.

Exudation = lat. Exudation of an "exudate", usually after inflammation caused leakage of fluid and cells from the blood and lymphatic vessels. Depending on the composition, serous (purulent), hemorrhagic (bloody) or septic. More common in the eye when proteins, lipids, fibrin or red blood cells are flushed out of defective vessels with the liquid. These retinal changes may be scattered or form a ring/ellipse of exudate. A ring indicates a longer existence.

refractive error=ametropia

In the cornea/cornea, excessive UV exposure can cause "sunburn" = photokeratitis, which leads to pain, lacrimation, eye twitching, sensitivity to light and constricted pupils.

Photo documentation & comparative findings.

In such circumstances:

Gerstenkorn - Staphylokokkeninfektion

Our face shields are made in Wetzlar/Germany. Cost € 15.00. You can buy these from us in the shop at Rosenheimer Str. 40, Au/Haidhausen, 81669 Munich.

GLAUCOMA Vernacular: glaucoma

Progressive lenses - Progressives Glasses - Verres Progessifs

Cataract=Cataract.

Actually to be ashamed of:

Histology is the study of human tissues, histopathology that of pathological changes.

Hygiene describes all preventive measures to keep individuals, groups and society healthy. Working areas of hygiene are much more than just the detection and elimination of pathogens. As a medical discipline, she is also interested in contact lenses and contact lens fitting.

In addition to the medical help that is absolutely necessary, there are many so-called individual health services in the health care system. In almost ALL disciplines and health professions, there are measurements and examinations that are no longer covered by health insurance. In the case of the eye, these include:

One speaks of a cataract when the clouding of the lens of the eye = lens cristalina has a clinically relevant appearance. Smaller pupil diameters and slower pupillary reactions intensify this effect. The development into a cataract is similar to the age-related changes in bones, teeth, skin, fingernails... Since there is no cell exchange inside the eye lens, it hardens and yellows, water and protein loss lead to hardening.

Keratoconus is a non-inflammatory degenerative change in the corneal/corneal stroma. Its causes are poorly understood. A keratoconus is described as an ectasia, in medical parlance an expansion, bulging of hollow organs or blood vessels is referred to as ectasia.

Children's eyes cannot be protected early enough (Prof. Dr. med. H.-J. Grein).

The processes in the central nervous system that trigger the appropriate response to changed environmental conditions are summarized as cogniton. Visual and hearing impairments in particular can disrupt cognition.

Contact lenses in figures: approx. 3%=3.3million. in D wear contact lenses, in Switzerland about 16%! Approx. 70% of them for special occasions such as going out, sports or the theatre.

Contact lens related complications and pathologies

convergence and convergence insufficiency

Headaches and glasses - what you should know

Sometimes being a little sick is healthy. -Rudolf Virchow

Undesirable consequences of LASIK can be: Impaired twilight and night vision, glare and halos around light sources, infection caused by surgery, over- or under-corrections, another common complication is dry eye. The cause is the disturbed innervation after the corneal nerves have been severed. A serious problem is tissue weakening due to tissue ablation. If the remaining thickness of the cornea after the operation is too small, ectasia can be the result. The frequency of this serious complication is given as 0.9 percent and 2.5 percent in higher myopia. Post-LASIK keratectasia is a long-term complication that can occur with a delay of up to ten years.

Lifetime - you expect 80 years:

In mid-2017, a fixed-amount benefit from statutory health insurance returned in part. However, only for a total of 1.2 percent of all those who are compulsorily insured. There is a fixed subsidy for nearsightedness or farsightedness greater than +/- 6.00 dpt, and astigmatism from 4.00 dpt. And for children as a fixed amount: In 98% of all cases this is 10.00 or 11.90. But you have to wait for the appointment!

Light is essential for our life, for the body, well-being...

The limbus is the transition area in which the clear corneal structure with its evenly distributed collagen fibers merges into the sclera structure, which is opaque due to irregularly distributed collagen fibers, and the conjunctiva.

When asked about the most important inventions, not everyone thinks of the lens.

Unfortunately, luxury has a very negative connotation, everyone wants at least one condominium with a small garden to the west.

spectacle lenses, spectacle frames

Melatonin levels are important for regulating the sleep-wake cycle. Melatonin is a type of sleep hormone.

Modulus describes the strength, in our case that of a contact lens:

There are moments when everything succeeds - don't worry, it doesn't last. (Jules Renard)

Our droplet infection safety products

Myopia = Short-sightedness in science

Sustainability in ophthalmic optics - colonize space first - instead of leaving the earth habitable!

Follow-up checks are a routine process for contact lens wearers that you should attend regularly. In principle, ALL contact lenses should be checked on the eye at least once a year. Lens wearers should also bring the care products used and the container with them to this appointment. This is sometimes necessary to find the cause of a problem.

Edema is generally a swelling that can affect different tissues, for example the eyelid, cornea, especially the stroma.

Optometry is the study of measurements on the eye - hence the word optometry, and the assessment of visual functions. With refraction and correction determinations, magnifying vision aids, contact lens adjustments, orthokeratology and the differentiation from eye diseases, i.e. the recognition of abnormalities, optometry is part of our optometric field of activity

Phor/ie is part of the word meaning to carry and incline. The term heterophoria is used for the tendency to (temporarily) squint. If the so-called visual axes of the eyes no longer intersect at the gazed fixation point, there are deviations in image processing. The deviations have individual compensation limits.

To put it simply, a polarizing lens is particularly translucent in a preferred direction/meridian. On the other hand, the glass is opaque in the perpendicular direction. Light normally oscillates in ALL directions. Like a picket fence you want to throw a CD through, only works in one direction quite well!

Spectacle lenses belong to the monetary value products, which are available in considerably different qualities. A bit like the one-euro burger of the day and the le Big Mac, and many others!

The declining accommodation/adjustment caused mainly by the loss of elasticity of the natural lens of the eye/lens cristalina is referred to as presbyopia=senior (far)sight.

Prism glasses - bad image?

In bright sunshine it is about 10 million times as bright as on a moonless, starless night. Similar to the camera, the incidence of light needs to be regulated - the play of the pupils.

remitting means temporarily suspended or temporarily declining.

The retina is the orange wallpaper that hugs the eyeball all the way around. It is so called because it contains a network of millions of light-sensitive photoreceptor cells. To put it simply, it works like this: Ideally, what we look at is sharply imaged on the retina by an infinite number of light rays passing through the cornea, anterior chamber, eye lens and vitreous body.

Spherical aberration describes a lens error. Due to the stronger or weaker light refraction in the edge areas, the light rays incident on the edge can have a shorter or longer focal length.

Light as we normally understand it is only a fraction of radiation in the physical sense. Radio communication, infrared - visible light - ultraviolet light, laser, microwave, mobile radio, radar, radioactive or X-ray radiation lead to many different pathological changes in the human body, especially in the eye.

The tinting of sunglasses alone does not guarantee protection against UV radiation. The consequences of so-called counterfeit products (RayBan, Made in Vietnam .. Oakley ...) have long been known. ZOLL, among others, has often uncovered counterfeit products during inspections. Due to their tinting, these sunglasses actually suggest a lack of UV protection.

Torticollis ocularis describes the tilting of the head to avoid double vision. Trochlear paralysis = failure of the superior oblique muscle. Also phoric strains due to muscular imbalance, various disorders, progressively this can lead to double vision.

The tear film covers the surface of the eye as a thin, transparent layer, this protects the eye from drying out and ensures optical transparency. It represents the interface between the eyeball and air. The tear film protects the eye from foreign bodies and prevents pathogenic microorganisms from settling on the surface of the eye.

Symptoms of dryness in the eye are not exclusively caused by insufficient secretion (hyposecretion) of the lacrimal gland, but often by a lack of lipids (hyperevaporation) on the surface of the tear film. This deficiency then causes increased evaporation of the tear film.

The most common tumor in the eye is choroidal melanoma.

Ulcus is an ulcer - e.g. B. Corneal ulcer, underlying tissue substance loss

Many environmental irritants and pathogens can also irritate or affect the eye.

Current surveys show: Men are more hesitant when it comes to UV protection, on the skin and in front of the eyes!

"UV-400" is a term that is on everyone's lips for the protective properties of sunglasses. Consumers often ask: But every gas station goggle, or those from cheap Jakob, have this sticker.

Viruses are not independent organisms, they are obligate cell parasites. Since they do not have their own metabolic apparatus, they are dependent on the metabolic pathways of the host cells. Despite this "primitive" structure, viruses are among the most successful pathogenic organisms in evolution. So-called zoonoses are infections that are transmitted from animals to humans. HIV from chimpanzees - influenza from birds - SARS and Corona probably from bats ...

Our face shields are made in Wetzlar/Germany. Cost € 15.00. You can buy these from us in the shop at Rosenheimer Str. 40, Au/Haidhausen, 81669 Munich.

Various studies describe the sensory-physiological hierarchy as follows:

Get a price advantage of 50% when you buy 2 or more pairs of glasses!

Myopia = Short-sightedness in science