Abstract
Purpose :
In vitrectomy for eyes with long axis such as high myopia, it has been reported that the trocar insertion away from the limbus is advantageous for macular manipulation. Recently, we developed an intraocular endoscope-holding robot (OQrimo; Riverfield Inc, Tokyo, Japan) (Int J Med Robot. 2020; e2177), which was approved as a medical device in Japan. In this study, the purpose was to investigate a new technique of trocar insertion into the pars plana under direct vision using OQrimo.
Methods :
In this study, three independent surgeons with different experience conducted the following method using porcine eyes and evaluated whether the procedure was possible using a scoring system (3: Possible, 2: Possible conditionally, 1: Impossible). In the operating room, OQrimo, OPMI Lumera 700 with Resight (Zeiss, Germany) were installed. First, two trocars (2 and 8 o'clock position) were placed 3.5-4.0 mm from the limbus in a porcine eye. The intraocular endoscope (25G: Machida, Japan) held by OQrimo was inserted through the 2 o'clock trocar and set in a position where the contralateral pars plana could be observed. The surgeon held a light pipe in his left hand and determined the position of the pars plana closest to the ora serrata on the endoscopic screen. The operator then inserted the trocar at that location with his right hand.
Results :
All three examiners were able to insert the trocar safely while observing the pars plana under an endoscope using OQrimo, and all of them gave a score of 3.
Conclusions :
Trocar insertion using OQrimo is a new technique, which can be useful in vitrectomy for eyes with long axis such as high myopia.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.