What Is Keratoconus? A Guide for Parents
- Feb 25
- 3 min read
Keratoconus is a condition that affects the shape and strength of the cornea — and when it develops in children or teens, early detection is especially important.
Dr. Rana, Pediatric Optometrist at University Children’s Eye Center (UCEC), explains what parents should know about this condition, how it’s diagnosed, and the treatment options available today.
How Does the Normal Eye Work?
To understand keratoconus, it helps to first understand how the eye normally functions.
The cornea is the clear, smooth, dome-shaped surface at the front of the eye. Its job is to focus light properly onto the back of the eye (the retina), helping us see clearly.
In a healthy eye, the cornea is:
Clear
Smooth
Evenly rounded
This regular shape allows light to focus sharply and produce clear vision.
What Happens in Keratoconus?
In keratoconus, the cornea begins to thin and weaken. As it becomes thinner, it starts to bulge outward, gradually forming a cone-like shape.
As the cornea changes shape, vision becomes:
Blurry
Distorted
Increasingly difficult to correct with regular glasses
In later stages, the cone becomes more pronounced, and vision can worsen significantly if left untreated.
How Do I Know If My Child Might Have Keratoconus?
Keratoconus often develops during the teenage years, but early signs can appear sooner.
During a comprehensive eye exam, we look for specific warning signs, including:
Rapid changes in prescription
Increasing nearsightedness (myopia)
Astigmatism that changes over time
Irregular findings during glasses measurements
Visible corneal shape changes under microscopic examination (slit lamp exam)
If we suspect keratoconus, we perform advanced imaging called corneal topography (also known as Pentacam imaging). This technology maps the front and back surfaces of the cornea and helps us detect even early structural changes.
Sometimes this imaging serves as a baseline to monitor over time. In other cases, it provides a clear diagnosis.
What Causes Keratoconus?
There is no single confirmed cause, but several factors are associated with keratoconus:
Genetics: Children with a family history of keratoconus are at higher risk.
Frequent eye rubbing
Allergies, especially in children who rub their eyes often
If someone in your family has keratoconus, it’s especially important to monitor your child’s vision closely.
Does Keratoconus Get Worse Over Time?
Yes. If left untreated, keratoconus can progress.
Over time:
The cornea may continue to thin
The cone shape can become more pronounced
Vision distortion may worsen
However, modern treatments can significantly slow — and sometimes halt — progression when caught early.
Can Keratoconus Cause Permanent Vision Loss?
It can, particularly if it progresses without treatment.
The good news is that with early detection and proper management, we can often slow progression and prevent severe stages from developing. Advances in technology have greatly improved outcomes for children and teens with keratoconus.
How Is Keratoconus Treated?
1. Corneal Cross-Linking
One of the most important treatments today is corneal cross-linking.
This procedure:
Uses riboflavin (vitamin B2) eye drops
Applies controlled ultraviolet light
Strengthens the collagen fibers within the cornea
The goal is to stabilize and strengthen the cornea, slowing or stopping progression.
Corneal cross-linking has become increasingly common in younger patients and is often the primary treatment needed.
2. Specialty Contact Lenses
As keratoconus progresses, glasses may no longer provide clear vision. In those cases, we may fit children with custom-designed contact lenses, including:
Rigid gas permeable (RGP) lenses
Hybrid lenses
Scleral lenses (specifically designed for keratoconus)
These specialty lenses help create a smoother optical surface, significantly improving visual clarity.
Can My Child Play Sports With Keratoconus?
In most cases, yes. Children with keratoconus can lead normal, active lives and participate in sports.
In more severe cases, we may recommend avoiding certain high-impact activities. Each recommendation is individualized based on the severity of the condition.
When Should You Schedule an Evaluation?
You should consider scheduling an evaluation if:
Your child’s prescription changes frequently
Astigmatism increases or shifts
Your child complains of worsening blurry vision
There is a family history of keratoconus
Early diagnosis makes a significant difference.
Schedule an Appointment
If you have concerns about your child’s vision, we’re here to help.
📞 Call University Children’s Eye Center at 732-613-9191 to schedule a comprehensive evaluation.
Early detection and modern treatment options can help protect your child’s vision for the future.
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