[OCT Observations] Screening for Refractive Surgery

Case History

Woman , 27 years old, medical history of Grass allergies.
Candidate to Refractive surgery with papillae on tarsal conjunctiva.

OD

OS

Clinical Findings

Corneal Topography (1A 1B) shows irregular corneal steepening in inferior location corresponding at the same location with eptihelium hyperplasia observed on ETM (3A 3B).

• Pachymetry doesn't show any irregularities (2A 2B).
• Epithelium Hyperplasia is correlated with a DGM stage (4B) and in this case we observe that Right eye (4A) has more pronounced Hyperplasia corresponding to DGM grade.
• Epithelium Hyperplasia induces corneal curvature changes due to DGM and dry eye syndrome.
  
• Epithelium hyperplasia may reflect a reaction to the micro lesions caused by hyperosmolar stress or micro abrasive effect induced by blinking on the ocular surface under condition of moderate dry eye .
  

Corneal Hyperplasia is a compensatory response to changes in the curvature such as in the case of keratoconus or radial keratotomy.

Variability of the distribution of ETM and total pachymetry are factors used to differentiate between hyperplasia induced by dry eye syndrome and ectatic corneas.

Conclusion

Wide ETM (10mm) offers better correlation with corneal topography.
Dry eye syndrom can cause epithelium changes  that’s why corneal topography analysis is inseparable of ETM in refractive surgery, keratoconus screening  and to ensure having the best keratometry for premium surgery.

Mr. Adil El Maftouhi is Orthoptist and Ocular imaging specialist in Centre Ophtalmologique de Rive Geneva, Switzerland and in CHNO XV-XX Paris, France. He is the author of international books on OCT and OCT-A. He has also published several peer-reviewed articles like "OCT and dry eye syndrome" and « OCT : the intelligence of the epithelium ».

Adil El Maftouhi works on the development and operation of the various imaging systems available in Ophthalmology to exploit the potential of each system for the benefit of the clinic.

At the same time, he contributes to the development of new imaging applications and software, particularly on OCT technology. Mr. El Maftouhi also participates in clinical and pharmacological research projects in the field of medical retina, glaucoma and low vision.

The information is intended for general informational purposes only. It is not intended as, and should not be considered, a substitute for professional medical advice, diagnosis, or treatment.
The content is not designed to replace the relationship that exists between a patient and their healthcare provider. Any medical decisions should be made in consultation with a qualified healthcare professional who can provide information tailored to your individual circumstances.
Medical procedures, case studies, and practices mentioned in this content may vary based on regional standards, local regulations, and the discretion of the providing healthcare professional. What may be considered appropriate and ethical in one country may differ in another.
The content may include general references to medical practices, medications, or treatments that are widely accepted in certain regions but may not be applicable or endorsed universally. It is important to consult with a healthcare professional in your jurisdiction to ensure the information is relevant to your specific situation.
The authors, publishers, and contributors of this content disclaim any liability for any adverse effects resulting directly or indirectly from information contained in this content. Readers should exercise their own judgment and seek the advice of healthcare professionals as appropriate.
By accessing and using this content, you acknowledge and agree to the terms of this disclaimer.