How is keratoconus discovered?

Normal Cornea

A normal healthy cornea is smooth and has the same thickness throughout. The shape of the cornea resembles a ball, with with the same amount of curvature in all directions.

Regular astigmatism

The cornea is more curved in one direction than the other – in other words, the cornea is shaped more like an egg than a ball. This shape distorts vision, but can also easily be corrected with glasses because the distortion is symmetric.

Keratoconus

This cornea is diseased and needs further examination and treatment. In the case shown in the image below, the cornea is flat in the upper part and markedly bulges out in the lower part (which is what’s known as the “cone”). Vision is distorted (people see double, triple and even quadruple images, and in many cases, glasses cannot restore decent visual acuity. Further, keratoconus is progressive and can lead to severe visual impairment, especially in children and adolescents.

Increase in astigmatism

Astigmatism should, put simply, remain the same throughout your life. Small changes in astigmatism are possible, but it it raises great concern when something like corneal curvature increases from 0.75 diopters to 2 diopters. An example in the table below, shows an increase in astigmatism (“cyl”) over period of several years, although moderate, but no intervention was performed. If you have an astigmatism/ corneal curvature that increases over the years, it’s definitely worth visiting a corneal specialist.

Normal Cornea

A normal healthy cornea is smooth and has the same thickness throughout. The shape of the cornea resembles a ball, with with the same amount of curvature in all directions.

Regular astigmatism

The cornea is more curved in one direction than the other – in other words, the cornea is shaped more like an egg than a ball. This shape distorts vision, but can also easily be corrected with glasses because the distortion is symmetric.

Keratoconus

This cornea is diseased and needs further examination and treatment. In the case shown in the image below, the cornea is flat in the upper part and markedly bulges out in the lower part (which is what’s known as the “cone”). Vision is distorted (people see double, triple and even quadruple images, and in many cases, glasses cannot restore decent visual acuity. Further, keratoconus is progressive and can lead to severe visual impairment, especially in children and adolescents.

Increase in astigmatism

Astigmatism should, put simply, remain the same throughout your life. Small changes in astigmatism are possible, but it it raises great concern when something like corneal curvature increases from 0.75 diopters to 2 diopters. An example in the table below, shows an increase in astigmatism (“cyl”) over period of several years, although moderate, but no intervention was performed. If you have an astigmatism/ corneal curvature that increases over the years, it’s definitely worth visiting a corneal specialist.

Normal Cornea

A normal healthy cornea is smooth and has the same thickness throughout. The shape of the cornea resembles a ball, with with the same amount of curvature in all directions.

Regular astigmatism

The cornea is more curved in one direction than the other – in other words, the cornea is shaped more like an egg than a ball. This shape distorts vision, but can also easily be corrected with glasses because the distortion is symmetric.

Keratoconus

This cornea is diseased and needs further examination and treatment. In the case shown in the image below, the cornea is flat in the upper part and markedly bulges out in the lower part (which is what’s known as the “cone”). Vision is distorted (people see double, triple and even quadruple images, and in many cases, glasses cannot restore decent visual acuity. Further, keratoconus is progressive and can lead to severe visual impairment, especially in children and adolescents.

Increase in astigmatism

Astigmatism should, put simply, remain the same throughout your life. Small changes in astigmatism are possible, but it it raises great concern when something like corneal curvature increases from 0.75 diopters to 2 diopters. An example in the table below, shows an increase in astigmatism (“cyl”) over period of several years, although moderate, but no intervention was performed. If you have an astigmatism/ corneal curvature that increases over the years, it’s definitely worth visiting a corneal specialist.

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Augeninstitut ELZA
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Thomas S.
Thomas S.
09:37 07 Jul 21
My left eye had to be operated on because of a cataract. As I had an Artiflex lens implanted a few years ago, it had to... be removed first before a modern lens could be implanted to correct the cataract. Prof. Hafezi treated me in an very competent and friendly manner. I am very happy with the result.read more
Selma A. Rahim
Selma A. Rahim
19:45 02 Jul 21
Dr. Hafezi.. the KING OF CXL🤴
Gianluca Ricci
Gianluca Ricci
12:46 10 Apr 21
Great team and service!
rehaneyecare
rehaneyecare
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 Geneva.read 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
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Based on 80 reviews
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