ABSTRACT
PURPOSE: To compare the efficacy of the transconjunctival releasable suture technique for pars plana vitrectomy using 23-gauge (23G) instruments versus the conventional 20-gauge (20G) technique. METHODS: A retrospective and interventional case series was consecutively performed for 199 eyes of the 192 patients that were a part of this study. Clinical data were reviewed retrospectively regarding the operation time, preoperative and postoperative intraocular pressure, visual acuity and astigmatism for 54 consecutive patients who received a 23G releasable suture vitrectomy and for 98 consecutive patients who received a 20G conventional vitrectomy during the period between April 2007 and September 2010. RESULTS: Mean operation time based on the operation record was 88.5 +/- 20.1 minutes in the 23G releasable suture vitrectomy group and 102.1 +/- 23.1 minutes in the 20G conventional vitrectomy group, respectively (p = 0.01). The last best-corrected visual acuity (BCVA) was significantly better than the preoperative BCVA in both patient groups (p = 0.01, p = 0.01). The 23G releasable suture group showed less surgically induced astigmatism than the 20G conventional vitrectomy group. Vitreous bleeding was observed to be in 6 eyes (5.9%) in the 23G group, and in 8 eyes (8.2%) in the 20G group. In addition, ocular hypertension was noted to be in 3 eyes (3.0%) in the 23G group, and 6 eyes (6.1%) in the 20G group. No serious complications such as postoperative hypotony or endophthalmitis were observed in either group. CONCLUSIONS: The 23G releasable suture technique is as effective as the 20G conventional technique and offers several advantages.
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Equipment Design , Follow-Up Studies , Retrospective Studies , Suture Techniques/instrumentation , Sutures , Treatment Outcome , Visual Acuity , Vitrectomy/methods , Vitreous Hemorrhage/physiopathologyABSTRACT
La pérdida de visión, como consecuencia de una hemorragia a nivel del vítreo en el curso de una hemorragia subaracnoidea, es conocida como Síndrome de Terson. Si bien las hemorragias del vítreo son afecciones bien conocidas y descritas en la literatura oftalmológica como complicaciones de una hemorragia subaracnoidea, es una afección muy frecuente. La fisiopatología de esta complicación no es clara, habiendose planteado por diferentes autores varias teorías para explicar la aparición de la sangre a nivel del vítreo. Si bien su presencia se sospecha por la clínica, solamente la ecografía ocular confirma su existencia. En general, se plantea que tiene buen pronóstico a largo plazo, ya que la recuperación de la visión es la regla, sea espontáneamente o luego de la vitrectomía. Los autores presentan 4 casos de esta rara complicación