The fitting of contact lenses
in 10 steps
In this consultation, you are introduced to the various contact lens systems: hard or soft with possible changing intervals in terms of daily, weekly, monthly or annual lenses. Together we will determine your individual needs and wishes to decide which type of contact lens is best suited for you. The following tests and measurements are used to determine whether the results further support this type of contact lens.
Using this measurement, an additional specification for your contact lenses, the optical correction, is calculated.
Corneal topography is performed with the aid of a computer keratograph with over 20,000 measuring points. Corneal topography is another very important measurement, which provides us precise data on the curvature of your cornea, its diameter and how it changes towards the periphery. This data set serves as the basis for calculating the exact radius, diameter and flattening of your contact lenses.
The front visible segment of the eye is examined with a microscope to evaluate its current actual condition. This examination includes an evaluation of tear film’s quality and quantity, along with an investigation for any abnormalities that may prevent a contact lens fitting. Optionally, the tear film can be further analyzed by computer (keratograph).
The parameters of your initial contact lens (geometry and optical values) are calculated on the basis of the measured data.
If you are still unaccustomed to handling contact lenses, our specialists will put the lens in for you with an experienced hand.
After an individual familiarization phase (about 45 minutes), the fit and movement of the contact lens are checked with the aid of a corneal microscope and modified where necessary.
Afterwards, a refraction / visual acuity test is performed while you are wearing the contact lenses. This enables the optician to detect any slight change where necessary in the optical values of your contact lenses.
After checking for a firm fit and measuring visual acuity, along with possible modifications, the final data of your lens are determined.
If you are not yet familiar with the handling of contact lenses, we will practice putting them on and taking them off with you. We’ll provide you important information on cleaning and care. You’ll receive instruction on intervals for wearing contact lenses for the first few weeks. Finally, we schedule an appointment for a check-up after roughly 14 days, during which both the fit and diopters of the contact lens, as well as the health of the eyes, are evaluated in terms of the contact lenses.