In glaucoma surgery such as trabeculec-tomy, access to the superior sclera and limbus is needed A superior rectus bridle suture or preferably, a traction suture through the superior peripheral cornea is used to rotate the eye to look down, thus exposing the superior sclera. Although the superior corneal traction suture causes minimal trauma, it may contribute to mild inflammation and can leave a small scar in the superior cornea.
Method & Results:
The Ong Eye Speculum has a larger inferior inner blade of about 15 mm compared to the standard speculum inner blades of about 5 mm. The larger inferior blade pushes on the inferior con-junctival fornix and hence rotates the eyeball down. The Ong Speculum will now be manufactured with the adjustable mechanism of the Lieberman speculum and this improves its functionality as it enables the amount of infraduction to be varied.
The video demonstrates the function of the Ong Speculum which facilitates exposure of the superior sclera and limbus by rotating the eyeball to look down without the need for a traction suture through the superior peripheral cornea. The Ong Eye Speculum will be manufactured by Amann Ophthalmic Instruments (Germany) and available through Designs for Vision (Australia). The author-designer has no financial interest in the product.