ENKeratoconus usually starts in the teens or twenties and long looks like ordinary short-sightedness with astigmatism: new glasses every six months, streaks and doubling around street lights in the evening. Then it turns out the problem is the shape of the cornea, not the optics, and keratoconus treatment in Germany begins not with how to improve vision but with whether the disease is progressing: everything else follows from that.
Below: how the disease and its progression are measured in Germany, how crosslinking, intrastromal ring segments and corneal transplantation differ, who is offered what and what one trip can realistically achieve. Other eye conditions: ophthalmology in Germany.
What happens to the eye
The cornea, the clear front layer of the eye, gradually thins and bulges into a cone in keratoconus, so the image is distorted unevenly and ordinary glasses stop correcting it. Glasses correct short-sightedness and regular astigmatism, but here each part of the cornea bends light differently: the distortion is irregular, not merely strong.
Symptoms include dioptres that change quickly, doubling in one eye, haloes and streaks around lights at night, and ordinary soft lenses becoming unbearable. A rare acute situation, corneal hydrops, needs separate mention: a deep layer tears and the cornea swells, with sudden severe blurring and pain, and the patient sees a doctor at once instead of waiting for a trip. See also vision treatment in Germany.
How it is investigated in Germany
The key examination is corneal topography and tomography, including Scheimpflug imaging, which maps the front and back surface and shows the thinnest point. Added to it are pachymetry (corneal thickness), an endothelial cell count (cells of the inner layer that keeps the cornea clear) and, where available, an assessment of corneal stiffness (biomechanics).
The decisive question is not “which stage” but “is the cornea changing over time”, and only maps taken at intervals can answer it. So old examinations brought from home have real value, and a German doctor sometimes asks for a repeat measurement in a few months before offering any intervention.
The ocular surface and allergy are checked too, because constant eye rubbing is treated as a factor that worsens the course. When crosslinking and ring segments are indicated is set out in the current recommendations of the German ophthalmological societies DOG and BVA.
What is offered at different stages
Treatment goes in steps, starting with optics. Early on, glasses correct vision; as the distortion grows, rigid gas-permeable, hybrid or scleral lenses put a smooth surface in front of the irregular cornea. Fitting them takes more than one visit and needs follow-up.
Proven progression is stopped with corneal crosslinking: after the epithelium (surface layer) is removed, or through it with another technique, the cornea is saturated with riboflavin and exposed to ultraviolet light to strengthen the bonds between collagen fibres. The aim is to stop the deterioration, not to give the vision back; improvement happens but is not promised.
When optics no longer cope, intrastromal ring segments, thin arcs inside the cornea, partly regularise its shape; in selected cases this is combined with topography-guided laser ablation or a phakic lens (an implanted extra lens). With scarring and severe thinning a transplant is needed: lamellar (deep anterior lamellar keratoplasty, DALK), keeping the healthy inner layer, or full thickness, still the main method in Germany for advanced keratoconus. Ordinary laser vision correction is contraindicated in keratoconus, so the laser eye surgery price page does not apply.
What realistically fits into one trip
One trip can cover examination, decision and, if needed, crosslinking: examination and decision take one or two days. Crosslinking is a day case, but for the first days the eye hurts and sees worse, and the bandage lens comes off after several days, so a return flight sooner than a week is a mistake.
Continuation is needed for scleral lens fitting with trials, the second eye if the eyes are treated in turn, and above all corneal transplantation: follow-up runs for months and the sutures are removed in stages, not in one trip. So with a transplant, what the home ophthalmologist will do and when the patient returns is agreed from the start.
Where this is done in Germany
Keratoconus is handled by university eye hospitals with corneal and transplantation departments. AlenMed’s partners include University Eye Hospital Heidelberg, with a department of corneal and transplantation surgery and Prof. Gerd U. Auffarth as medical director, and University Eye Hospital Tübingen, whose section for corneal diseases, corneal surgery and tissue transplantation is headed by corneal surgeon Prof. Sebastian Thaler.
Before travelling, ask whether lamellar transplantation is done there, whether donor corneas are available and how long the wait is, who fits the lenses and who follows the patient between visits.
Frequently asked questions
Can keratoconus be stopped?
Corneal crosslinking aims to do exactly that once progression is proven on corneal maps. It strengthens the collagen bonds so that the cornea stops thinning and bulging, but it does not promise to restore vision, which still depends on glasses or special lenses. Checks continue afterwards: the disease can still progress, especially in younger patients.
When is a corneal transplant needed for keratoconus?
At a late stage, when the cornea is scarred or severely thinned and lenses and ring segments no longer give useful vision. In Germany the main method for advanced disease is a full-thickness graft; lamellar DALK is possible if the deep layers are free of scars. Follow-up lasts months and the sutures come out in stages.
Why bring old eye examinations to Germany?
Old topography and tomography maps are the main evidence of whether the cornea is changing. Under German rules, the crosslinking decision compares two corneal power measurements from the same device or comparable devices, so note the dates and the device on each map. Without old data, a repeat measurement after a few months may be needed.
How AlenMed arranges treatment
AlenMed starts with the documents: topography and pachymetry maps, old ones included as evidence of progression, the ophthalmologist’s report and the lens-fitting history go to a German eye hospital. The doctor says what is worth doing now, what has to be repeated on site and how many days the trip takes; then come a written estimate, a visa invitation and an interpreter at the appointment where the drop regimen is explained.
Plan for a week’s accommodation after crosslinking, dark glasses and drops, translated written after-care rules and a report for the ophthalmologist at home.
This material is for information only and is not an offer; a doctor decides the treatment plan at an in-person consultation.
News on this topic
New Retinal Chip PRIMA Restores Central Vision in Geographic Atrophy
A newly approved photovoltaic subretinal chip offers restored visual function for patients with central vision loss from geographic atrophy due to dry AMD.
