Bad Vision in Pregnancy

The human cornea must be mechanically stable as a structure. One speaks of the biomechanics of the cornea. In recent years there is increasing evidence that hormones, especially during pregnancy, can negatively affect corneal biomechanics. Our group is one of the international pioneers of this branch of research.

Harmless changes in vision during pregnancy

During pregnancy, many alterations take place in the human body. It has been known for decades that a so-called “myopic shift” takes place in late pregnancy, so the human eye becomes more short-sighted. The causes of this are not yet fully understood, but it is believed that the cornea in late pregnancy stores water and thereby changes their refractive index. These hermetic changes usually return in the first months after pregnancy

Oestrogen

It has been known for a number of years now that oestrogen can directly affect the cornea. Increased oestrogen levels during pregnancy can have a direct impact on the biomechanical stability of the cornea. In other words, the cornea becomes “softer” at the end of the pregnancy. This can have a number of consequences.

  • Keratoconus: pregnancy can worsen existing keratoconus. Our group has already published on this topic years ago.
  • Post-LASIK ectasia: our research group was one of the first to report cases of patients who underwent LASIK, who showed excellent results and good vision for years after LASIK… until they became pregnant. During pregnancy, these women then developed post-LASIK ectasia. This is very similar to keratoconus, and is the most threatening complication after LASIK / PRK. These cases demonstrate the importance of the surgeon’s experience in assessing patient’s suitability for undergoing LASIK. Also, the surgeon must be very familiar with the topic of biomechanics of the cornea.

Bad vision and pregnancy

Thyroid

There is increasing evidence that the under-production of thyroid stimulating hormone, TSH, has a direct impact on the biomechanics of the cornea and therefore, good vision. Our research group has been a trailblazer here; read more about our work here.

Our research on this topic

What effect does corneal cross-linking have after 10 years? This August, ELZA doctor and researcher, Emilio Torres-Netto MD was interviewed by TouchOphthalmology on a recent congress presentation he gave on 10-year cross-linking follow-up data collated from two treatment centers in Zurich, and was asked about what the research group found.
This month, Brazil’s top Ophthalmology magazine, Oftalmologica Em Foco, features ELZA’s Prof. Hafezi and Dr. Torres-Netto exploring the story of how CXL at the slit lamp is becoming a reality.

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Augeninstitut ELZA
4.7
Based on 80 reviews
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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
4.7
Based on 80 reviews
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