Extraocular needle- guided haptic insertion technique of scleral fixation intraocular lens surgeries (X-NIT). 2017

Prabu Baskaran, and Pratyusha Ganne, and Sahil Bhandari, and Seema Ramakrishnan, and Rengaraj Venkatesh, and Prashant Gireesh
Department of Vitreo Retina, Aravind Eye Hospital, Puducherry, India.

The most challenging step in sutureless scleral fixation of intraocular lens (SFIOL) is exteriorization of haptics. The conventional handshake technique has a learning curve since it involves intraocular handing over of haptics from one forceps to another. Here, we describe "extraocular needle-guided haptic insertion technique" (X-NIT), a novel technique of exteriorizing haptics that totally eliminates intraocular manipulations. This method involves sequential introduction of two bent 26-gauge needles through the sclera (pars plicata zone) into the eye which are brought out through a sclerocorneal wound. The intraocular lens haptics are threaded through these needles and exteriorized. Nineteen consecutive patients underwent surgery by this technique. There were no intraoperative complications. The mean best-corrected visual acuity (BCVA) of these patients at 1-month follow-up was 0.5 ± 0.3 (logarithm of the minimum angle of resolution) with 18 of 19 eyes showing one or more lines of improvement in BCVA. X-NIT is a safe, easy, cost-effective, and highly reproducible technique, especially for beginners.

UI MeSH Term Description Entries
D007910 Lenses, Intraocular Artificial implanted lenses. Implantable Contact Lens,Lens, Intraocular,Contact Lens, Implantable,Intraocular Lens,Intraocular Lenses,Lens, Implantable Contact
D009339 Needles Sharp instruments used for puncturing or suturing. Hypodermic Needles,Hypodermic Needle,Needle,Needle, Hypodermic,Needles, Hypodermic
D011474 Prosthesis Design The plan and delineation of prostheses in general or a specific prosthesis. Design, Prosthesis,Designs, Prosthesis,Prosthesis Designs
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001036 Aphakia, Postcataract Absence of the crystalline lens resulting from cataract extraction. Aphakic Eye, Postcataract,Aphakias, Postcataract,Postcataract Aphakia,Postcataract Aphakias,Postcataract Aphakic Eye,Postcataract Aphakic Eyes
D012590 Sclera The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the CANAL OF SCHLEMM. (From Cline et al., Dictionary of Visual Science, 4th ed) Scleral Spur,Scleral Spurs,Scleras
D013536 Suture Techniques Techniques for securing together the edges of a wound, with loops of thread or similar materials (SUTURES). Suture Technics,Suture Technic,Suture Technique,Technic, Suture,Technics, Suture,Technique, Suture,Techniques, Suture
D019654 Lens Implantation, Intraocular Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place. Implantation, Intraocular Lens,Implantations, Intraocular Lens,Intraocular Lens Implantation,Intraocular Lens Implantations,Lens Implantations, Intraocular

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