Retinal Prosthesis by Mark S. Humayun & Lisa C. Olmos de Koo

Author:Mark S. Humayun & Lisa C. Olmos de Koo
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Fig. 4.10 Silicone sleeve is applied in the superior nasal quadrant

Next, the encirclement band is sutured with 5-0 Mersilene in the two nasal quadrants, and the electronic parts (transmitting coil and electronic case) are temporarily fixed to the sclera with 5-0 Mersilene, using the special tab holes carved on the silicone shell. Suture bites should be taken anterior to posterior, emerging at the intended suture tab hole setback distance provided by special axial length-related tables (Second Sight Medical Products medical product). Before definitively fixing the external implant to the sclera, the surgeon must make sure that the electronic case is centered in the supero-temporal quadrant adjusting the superior/inferior position of the case and that the distances between the suture tab and the limbus are calculated according to the special fitting tables mentioned above, adjusting the anterior/posterior position of the case and coil. It is very important to carefully follow the measurements listed in the table in order to allow enough cable for optimal positioning of the multielectrode array on the retinal surface, above the macula. Once the suture tab hole positions are confirmed, we can permanently tie the sutures by attaching them through the three suture tabs (Figs. 4.11 and 4.12).

Fig. 4.11Electronic case anchored with 5-0 Mersilene suture to the sclera in the supero-temporal quadrant using the special tab holes

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.