Fitting Background

Otto Wichterle’s pioneering work changed the future of contact lenses. Eef van der Worp revisits the inventor’s remarkable legacy and its lasting impact on modern contact lens practice.

High-order aberrations can significantly influence visual quality and contact lens performance. Filippo Selden explains their clinical relevance and practical implications.

Irregular corneal shapes have always posed particular challenges for contact lens fitters. Keratoconus, pellucid marginal corneal degeneration, postoperative scarring and corneal steps following penetrating keratoplasty or refractive surgery, as well as scarring following trauma, can significantly impair the optical quality of the corneal surface.

A guide through awareness, science and practice Short-sightedness, medically known as myopia, has gradually and continuously crept into our school classrooms, families and optometry practices over the past decades. It is not a ‘trend’ but a global challenge that has a concrete impact on everyday working life. A fundamental question for optometrists and ophthalmologists is:…

Holy grail aberrations What I like about the contact lens field – as opposed to general medicine, for instance – is that we can ‘create things.’ Beautiful things. General medicine and eye care is more about dealing with existing conditions, while in the contact lens field, we can create vision. How cool is that? We…

The care and treatment of vision problems in childhood is particularly challenging, especially when conventional visual aids are not sufficient. A 21-year retrospective study by Carrasquillo et al. highlights the long-term effects and benefits of scleral lenses in pediatric care.

Everyone has an opinion on presbyopia. But let’s stick to the facts and answer this question: What is presbyopia, exactly, and what can we do about it? Part I here in GlobalCONTACT covered the mechanism of accommodation and presbyopia as well as definitions of the condition.

Efficient contact lens care for soft contact lenses is particularly important for long-term and safe contact lens wear. At the last Opti Munich 2024, a start-up presented a completely new system that not only simplifies contact lens care, but also manages the amount of care product used sustainably.

The importance of contact lens characterization  Why do wearers consider “soft” contact lenses (CLs) more comfortable than the “rigid” gas permeable (RGP) alternative? Thus, what does “comfort” mean from a scientific point of view? In this short article, we aim to emphasize the significance of meticulously characterizing and monitoring the physical parameters of CL materials…