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This blog features the presentation of rare and interesting cases in addition to basic cases, the different tools for their diagnosis and discussions about their interpretations. Please share with us your comments and feedback about each case by posting a comment from the “comments” link below each case.........
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Sunday, June 24, 2007

Case 9

A 45 years old male is presenting to do refractive surgery to get rid of his glasses. Ocular examination is normal. His glasses are Rt. sphere -5.25 cylinder -2.50X155, Lt. only cylinder -3.50X145. His BCVA is 0.5 bilateral. Corneal pachymetry and topography were done and his central corneal thickness in the right 495 microns and left 504 microns.

Corneal topography (normalized scale) shows asymmetrical vertical bowtie astigmatism with some inferior steepening. Keratoconus possibility index (KISA) is within normal (<60%> no Keratoconus), it is 4 for the right and 5 for the left.
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Does this patient have Keratoconus? Would LASIK procedure be an option for him? Does he need any other management?

5 comments:

Rabab Khattab Msc said...

A case of bilateral irregular astigmatism.
LASIK could be a line of ttt.

Dr. Zeinab El Sanabary said...

This case could be considered a Keratoconus form fruste, which is characterized by asymmetric bow-tie with increased steepening inferiorly and it should be detected by normalized scale

Nahla Sobhy, M.Sc. said...

In my opinion, LASIK surgery would be too risky. First, because of the considerable inferior steepness and second, because his pachymetry values are below normal in one eye (less than 500 microns) and the other is eye is borderline.

د. هانى احمد said...

you need an expert professor to give a final comment on each case, according to subspeciality. That will give a great value to the comments.I can see in the comments on some cases, like case number 10, that there is an abuse of your blog, how can you protect your valuable blog?.. thanks

Unknown said...

I think Orbscan should be done on this patient and then proceed.