Corneal Incision
Dr. Colvard discusses square corneal incision construction.
13,873 video views and 183,911 series views since 1/13/2009
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Introduction from Dr. Colvard
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Corneal Incision
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Scleral Incision
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Capsulorhexis
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Hydrodissection and Hydrodelineation
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Basic Divide and Conquer
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Horizontal Chop
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Vertical Chop in Hard Cataract
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Bimanual Phaco
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Capsular Tension Rings
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Insertion of Three-piece IOL after Capsular Tear
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Dialing the Trailing Haptic of Three-piece IOL
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Manual Folding of Three Piece Acrylic and Silicone IOLs
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AMO Tecnis Single Piece Acrylic IOL
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AMO Tecnis Three Piece Silicone IOL
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Tecnis Three Piece Acrylic IOLs
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Loading the Monarch 2 with a single piece acrylic IOL
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Loading the Purple Monarch with a three piece acrylic IOL
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Bausch & Lomb Easy-Load Lens Delivery System
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Tecnis Three Piece Acrylic IOL
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Tecnis Single Piece Acrylic IOL Placement
Comments (2)
Our friend from Colombia is absolutely correct. Paul Ernest's lab work, referenced in our text, has shown that a 1.5 mm intracorneal dissection with scleral tunnel incisions generally provide water tight sutureless incisions. Clear corneal incisions need longer intracorneal dissections in order to be stable, but with all incisions, too long an intracorneal dissection produces intraopertaive folds in the cornea and impairs visualization. Dr. C
it is true that a square incision will be more water-tight postoperatively, but in some surgical maneuvers, due to the long tunnel, it can create folds in the cornea. I think that 1,5 mm is a very good length for the tunnel, maintaining the water-tight capability and avoiding the folds when you need to tilt your phaco tip or forceps through the incision during surgery.