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مقاله
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Abstract
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Title:
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Visual outcomes after successful versus failed big-bubble deep anterior lamellar keratoplasty in keratoconus
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Author(s):
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Javadi MA, MD;,MD ; Feizi S, MD*; Daryabari S-H
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Presentation Type:
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Poster
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Subject:
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Cornea and Anterior Segment
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Others:
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Presenting Author:
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Name:
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Seyed hashem Daryabari
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Affiliation :(optional)
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Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences
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E mail:
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shdarya50@yahoo.com
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Phone:
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Mobile:
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09113201959
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Purpose:
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To compare visual outcomes after deep anterior lamellar keratoplasty (DALK) between eyes with and without successful big-bubble formation.
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Methods:
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In this retrospective comparative study, a total of 290 consecutive eyes from 257 keratoconus-affected patients that underwent DALK with the big-bubble technique were enrolled. In cases where the big bubble could not be accomplished, manual stromal dissection down to DM was progressively performed using a crescent knife. Visual acuity and refractive outcomes were compared between the bare Descemet membrane (DM) group (group 1) and manual dissection group (group 2).
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Results:
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The bare DM was successfully achieved in 229 (79.2%) eyes. The study groups were comparable in terms of age), preoperative best-spectacle corrected visual acuity (BSCVA), and postoperative follow-up (38.4±20.4 versus 37.4±19.9 months, respectively, P=0.73). Postoperative BSCVA was significantly better in group 1 than in group 2 throughout the follow-up period (P<0.05). At final follow-up examination, a BCVA ≤0.30 logMAR was achieved in 82.1% of group 1 and 54.5% of group 2 (P<0.001). Groups 1 and 2 were comparable in terms of postoperative spherical equivalent refractive error and keratometric astigmatism
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Conclusion:
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Retention of posterior corneal stroma resulted in a lower visual acuity as compared to the bare DM group.
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Attachment:
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