scholarly journals Analysis of Changes in Corneal Topography after 27-Gauge Transconjunctival Microincision Vitrectomy Combined with Cataract Surgery

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Tomoyuki Watanabe ◽  
Tamaki Gekka ◽  
Akira Watanabe ◽  
Tadashi Nakano

Purpose. To investigate changes in the corneal shape before and after vitrectomy, over a period of time, using a 27-gauge system. Methods. Forty-five eyes underwent a combination of cataract surgery and vitrectomy. The surgeries were performed using a 27-gauge transconjunctival vitrectomy system, in which the corneal topography could be performed up to three months after the surgery. The surgeries were performed for an epiretinal membrane in 11 eyes, a macular hole in 14 eyes, and rhegmatogenous retinal detachment in 20 eyes. All of the surgeries were performed by the same surgeon, and in all cases, a 4-port 27-gauge vitrectomy device was used. Cataract surgery in all patients was performed with a 2.4 mm corneoscleral incision at 11 o’clock. The surgeries were performed without suturing the operative wound in all cases. Corneal topography was performed using a TMS-4 topographer (Tomey Corporation, Tokyo, Japan). The examinations were performed the day before and 1 day, 1 week, 1 month, and 3 months after the surgery. The results of corneal topography for the spherical, regular astigmatic, asymmetric, and high-order irregular astigmatic components were compared before and after surgery. Results. No significant differences were seen in any of the components in the epiretinal membrane group, but significant differences were seen in the asymmetric components and the high-order irregular astigmatic components between the macular hole and rhegmatogenous retinal detachment groups (p<0.05). There were no significant changes in intraocular pressure on any measurement time in the postoperative period compared to preoperative intraocular pressure. Conclusion. Irregular astigmatism was seen after surgery when 27-gauge vitrectomy with a 4-port system was performed together with cataract surgery with a 2.4 mm incision.

Retina ◽  
2017 ◽  
Vol 37 (6) ◽  
pp. 1073-1078 ◽  
Author(s):  
Rahul N. Khurana ◽  
Charles C. Wykoff ◽  
Alok S. Bansal ◽  
Kunihiko Akiyama ◽  
James D. Palmer ◽  
...  

Life ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 453
Author(s):  
Agata Pietras-Baczewska ◽  
Katarzyna Nowomiejska ◽  
Agnieszka Brzozowska ◽  
Mario Damiano Toro ◽  
Wojciech Załuska ◽  
...  

(1) Background: The aim of the study was to test the hypothesis that the antioxidant status in the vitreous body of eyes, which had been vitrectomized due to rhegmatogenous retinal detachment (RRD) with or without proliferative vitreoretinopathy (PVR), is higher than in eyes vitrectomized due to other retinal diseases. (2) Methods: four patient groups were analyzed: 22 eyes of patients with RRD without PVR, 27 eyes with RRD and PVR, 22 eyes with macular hole (MH) and 10 eyes with epiretinal membrane (ERM). Spectrophotometric methods were used to determine the total antioxidant status (TAS) values as well as superoxide dismutase (SOD) and glutathione reductase (GR) activities in the vitreous fluid samples. (3) Results: no significant differences in TAS values and antioxidant enzyme activities were observed among patient with RRD with and without PVR and with MH and ERM. The longer the duration of RRD leading to PVR and better postoperative visual acuity, the higher the TAS level. No significant differences were found between “macula on” and “macula off” subgroups within the RRD group and the RRD combined with PVR group. (4) Conclusions: The preliminary results do not support the thesis that the antioxidant status of vitrectomized eyes is different in patients with RRD with or without PVR in comparison to patients with MH and ERM. In patients with RRD, PVR presence and detached macula do not affect the values of TAS, SOD and GR in the vitreous fluid. The duration of the disease influences TAS in the vitreous in eyes with RRD complicated with PVR.


PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255827
Author(s):  
Shumpei Obata ◽  
Masashi Kakinoki ◽  
Osamu Sawada ◽  
Yoshitsugu Saishin ◽  
Yusuke Ichiyama ◽  
...  

Purpose To investigate the effects of internal limiting membrane (ILM) peeling on visual acuity (VA) after rhegmatogenous retinal detachment (RRD) surgery. Methods This retrospective analysis examined the medical records of patients with RRD who underwent vitrectomy at 26 institutions. To detect prognostic factors of VA at 6 months postoperatively (post-VA), multivariate linear regression was performed with post-VA as the objective variable; ILM peeling, sex, age, preoperative VA (pre-VA), intraocular pressure, axial length, duration of RRD, and cataract surgery served as explanatory variables. Recurrence of RRD and epiretinal membrane formation within 6 months postoperatively were compared between groups of patients with and without ILM peeling, among patients with macula-on and macula-off RRD. Results The inclusion criteria were met by 523 eyes with a macula-on RRD and 364 eyes with a macula-off RRD. ILM peeling was performed in 85 eyes with a macula-on RRD and 57 eyes with a macula-off RRD. In eyes with a macula-on RRD, ILM peeling did not affect post-VA (p = 0.72). Vitrectomy without cataract surgery and poor pre-VA were significantly associated with poor post-VA (p = 0.01 and p < 0.001, respectively). In eyes with a macula-off RRD, ILM peeling, long duration of RRD, and poor pre-VA were significantly associated with poor post-VA (p = 0.037, p = 0.007, and p < 0.001, respectively). Recurrence of RRD and epiretinal membrane formation were similar between groups of patients with and without ILM peeling, among patients with macula-on and macula-off RRD. Retina sensitivity was not evaluated by microperimetry. Conclusion ILM peeling did not affect post-VA in eyes with a macula-on RRD, whereas post-VA was worse in eyes with ILM peeling than in eyes without peeling, among eyes with a macula-off RRD.


Author(s):  
U.R. Altynbaev ◽  

Purpose. To study the results of cataract surgery with implantation of multifocal IOLs in patients with various retinal pathologies who underwent vitreoretinal surgery. Material and мethods. Fifteen patients who had previously undergone vitreoretinal interventions for macular hole (n=6), epiretinal membrane (n=4) and retinal detachment (n=5) were observed. The criterion for choosing in favor of multifocal lens implantation was high visual acuity (0.7 or more) after undergoing vitreoretinal surgery. All patients underwent cataract phacoemulsification with implantation of two types of multifocal lenses: I group – IOL with an extended near focus (EDOF) (n=8) and II group – with a multifocal three-focus lens (n=7 eyes), including, in 3 cases – with toric component. In 55% of cases, the operation was performed on both eyes. The age of the patients varied from 34 to 59 years (51.4 ± 6.1 years). Results. Long-distance uncorrected visual acuity varied from 0.7 to 1.0 (0.85±0.25), which did not depend on the type of intraocular lens and correlated with morphological changes in the macular region of the retina. The highest uncorrected visual acuity (0.8±0.14) at an intermediate and near distance (0.75±0.25) was achieved in I group of patients. Postoperative spherical equivalent after 1 month corresponded to the planned target refraction (Em±0.5 diopters) in 14 cases and remained stable during 12 months of observation. In general, subjective satisfaction with MIOL implantation was higher in patients in II group, which was explained by minimal changes in the macular region of the retina. Additional spectacle correction for near was required for a patient of I group with a history of macular rupture, who underwent bilateral multifocal IOL implantation with high uncorrected visual acuity in the distance (OD=1.0 \ OS=1.0) and near (OD=0.6 \ OS=0,5). Conclusion. Implantation of multifocal lenses in patients with a good anatomical and functional outcome of vitreoretinal surgery allows obtaining high and stable functional results. Bilateral implantation of a multifocal lens with an extended near focus in patients with operated macular pathology does not cause specific adaptive difficulties in binocular vision. The choice in favor of multifocal lens implantation in patients with vitreoretinal pathology requires an individual approach and careful selection. Key words: multifocal lens, cataract, macular hole, retinal detachment, epiretinal membrane.


PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0232758 ◽  
Author(s):  
Hisashi Fukuyama ◽  
Hiroto Ishikawa ◽  
Yuki Komuku ◽  
Takashi Araki ◽  
Naoki Kimura ◽  
...  

Author(s):  
Mehmet Giray Ersoz ◽  
Mumin Hocaoglu ◽  
Isil Sayman Muslubas ◽  
Serra Arf ◽  
Murat Karacorlu

2021 ◽  
Vol 10 (16) ◽  
pp. 3472
Author(s):  
Bojan Pajic ◽  
Mirko Resan ◽  
Brigitte Pajic-Eggspuehler ◽  
Horace Massa ◽  
Zeljka Cvejic

Background: The aim of the study is to investigate whether the circadian IOP rhythm can be influenced by combined cataract surgery with high frequency deep sclerotomy (HFDS) and whether intraocular pressure (IOP) can be significantly reduced by HFDS. Methods: In our study 10 patients were included, in whom 24 h IOP monitoring was installed before and after HFDS/cataract surgery using a Triggerfish. HFDS is a minimally invasive glaucoma surgery (MIGS). Results: After performed HFDS combined with cataract surgery, the IOP was reduced from 27.7 ± 2.11 mmHg to 14.4 ± 2.59 mmHg, which is highly significant (p < 0.001). The contact lens sensor (CLS) cosinor analysis pre- and postoperatively showed that the circadian rhythm is not influenced by the surgery, i.e., the circadian IOP rhythm did not show significant differences before and after surgery. Conclusions: HFDS combined with cataract surgery is a potent surgical method that can significantly reduce the IOP. However, the circadian rhythm cannot be changed by the surgery. The acrophase remained during the night in all patients.


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