Architectural analysis of subconjunctival oblique limbus incision techniques in manual cataract extraction surgery by optical coherence tomography imaging

The purpose was to assess the profile of subconjunctival oblique limbus incision (SCOLI) design by using anterior-segment optical coherence tomography (AS-OCT) and try to emphasize the proper technique of wound construction. The structural dimensions and integrity of the wound were acquired from the...

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Bibliographic Details
Published in:Indian journal of ophthalmology 2022-11, Vol.70 (11), p.4036-4040
Main Authors: Yang, Jun, Han, Fang, Song, Liming, Huang, Xin, Jiang, Yijing, Lai, Pinghong
Format: Article
Language:English
Subjects:
anterior-segment optical coherence tomography
Cataract
Cataract Extraction - methods
Cataracts
Conjunctiva
Cornea
Cornea - surgery
Diagnosis
Humans
incisional funnel
Lip
manual small-incision cataract surgery
Optical tomography
Sclera - surgery
subconjunctival oblique limbus incisions
Surgery
Surgical Technique
Surgical Wound - surgery
Tomography
Tomography, Optical Coherence - methods
Wounds
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Summary:The purpose was to assess the profile of subconjunctival oblique limbus incision (SCOLI) design by using anterior-segment optical coherence tomography (AS-OCT) and try to emphasize the proper technique of wound construction. The structural dimensions and integrity of the wound were acquired from the patients, who had undergone manual small-incision cataract surgery with SCOLI techniques, using a Canon OCT anterior-segment imaging system on the first postoperative day. The use of AS-OCT allowed for an in vivo evaluation of SCOLI in high definition. The radial OCT scan image showed three staggered incisions, including conjunctiva incision, scleral entrance, and inner corneal lip. A tangential scan demonstrated that the internal lip is parallel to the curvature of the peripheral cornea. The en face image showed an asymmetric 4 arc-shaped configuration rather than a symmetrical one. In conclusion, AS-OCT could be used to analyze SCOLI to determine optimal wound construction and geometry. The results of this study indicated that an asymmetric 4 arc-shaped limbus tunnel incision was superior to the conventional linear equivalent in stability and nucleus delivery.
ISSN:0301-4738
1998-3689
DOI:10.4103/ijo.IJO_1364_22