Modern Diagnostics and Therapy

Tear film break-up time

Dry eyes can have many causes. These range from the “simple” – blepharitis – to autoimmune diseases and hormonal disorders. Dry eye is not usually dangerous, but it can severely limit the quality of life of the patients affected by it, and the objective is to generate a healthy tear film that evaporates slowly and has a normal “tear film break-up time”.

Normal tear film
Resists evaporation for over 10 seconds

Morbid tear film
Breaks down after a few seconds (black spots)

In-depth diagnostics

Dry Eye Report

Our diagnostic instruments can take the information from all of the methods mentioned above allows us to narrow down the true cause of your dry eyes – something that’s essential to planning a successful treatment.

Tear meniscus

Tears get produced – but they also get drained into the tear duct. It’s a dynamic process, and it’s good to understand how quickly the tear film is being drained. The amount that’s being drained any given time can be determined by measuring the tear meniscus with a high-resolution camera.

Picture quality

We can determine the quality of the tear film with a Placido disk analysis. You look at concentric rings; a camera at the centre of the rings takes an image of what’s reflected back from the surface of the eye. The presence (or absence) of distortion in these rings provides information about the quality of the tear film.


An analysis of the meibomian glands in the lid margin allows to determine the best therapy for you.

Tear film osmolarity

If you have a salt solution and boil off (evaporate away) all of the water, you generate an increasingly salty solution until only the salt is left. It’s the same with evaporative dry eye: the increasing saltiness (osmolarity) indicates the severity of dry eye.

Multiple causes, many treatments

There are many causes of dry eye – and there are just as many ways to treat it. Working out the best approach for you requires diligent examination. This involves:

  • Use of the ocular surface disease index (OSDI) questionnaire
  • Assessment using the latest diagnostic equipment
  • A holistic analysis of the OSDI answers and diagnostic information

The therapy then offered is based on the causes of the dry eye and can range from “simple” tear replacements, approaches that treat eyelid inflammation, the implantation of punctal plugs, to suppression of the immune response in the eye with topical drugs. Every treatment plan is 100% tailored to your individual needs.


In most cases, the dry eye is a chronic change that often goes unnoticed for decades. At the point where most patients start to notice the first symptoms of dry eye, the disease has often been around for 15–20 years. Reversing those effects also takes time. Typically, such therapy lasts for several months, and it can take a few weeks before you start to notice the benefits. This is entirely normal.

The ELZA Institute






Augeninstitut ELZA
Based on 74 reviews
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Gianluca Ricci
Gianluca Ricci
12:46 10 Apr 21
Great team and service!
05:36 08 Apr 21
Excellent surgeon
Steven H.A
Steven H.A
16:13 11 Jan 21
Prof. F. Hafezi s expertise is enormous and he has a very pleasant and calm nature which gives the patient... security.Thank youread more
Online Commande
Online Commande
09:19 05 Dec 20
Totally creepy, very arrogant Prof.He just want your money.It may explain, why this Prof. is not in the center of the... city of Zürich and why he has been thrown away from University of more
Elena Churilova
Elena Churilova
10:06 17 Nov 20
At the moment, 3 months have passed since the moment I made laser vision correction in this clinic. and I can say that... I am happy that I chose this particular clinic and Prof. F. Hafezi. The entire staff of the clinic is very friendly, treats patients with sympathy and patience if they are nervous before surgery (my big gratitude to Aida Alili for all support and patience). The doctor Hafezi and other doctors of the clinic are very professional and ready to explain to you as many times as you need. I can only recommend!read more
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Augeninstitut ELZA
Based on 74 reviews
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