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Wlaź A, Wilkos‐Kuc A, Rozegnał‐Madej A, Żarnowski T. Phacotrabeculectomy using collagen matrix implant (Ologen ® ) versus mitomycin C: a prospective randomized controlled trial. Acta Ophthalmol 2019; 97:e817-e826. [PMID: 30924600 DOI: 10.1111/aos.14102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 03/05/2019] [Indexed: 11/29/2022]
Abstract
PURPOSE To compare the efficacy and safety of collagen matrix implant (Ologen® ; OLO) with mitomycin C (MMC) in phacotrabeculectomy. METHODS Prospective, single-centre, nonblinded, randomized controlled trial. A total of 53 eyes of 45 patients were enrolled in the study protocol with 27 eyes randomly assigned to OLO and 26 to MMC. The follow-up was 12 months. The primary outcome measure was mean change from baseline intraocular pressure (IOP) in both groups after 12 months. The secondary outcome measures were cumulative success rates at 12 months with Kaplan-Meier analysis, change in number of medications, change in best corrected visual acuity (BCVA), and bleb morphology assessed using Moorfields Bleb Grading System and anterior segment swept-source optical coherence tomography. RESULTS The mean IOP decreased from 26.4 ± 6.1 mmHg to 13.7 ± 3.8 in the OLO group and from 23.4 ± 3.6 mmHg to 13.3 ± 2.8 in the MMC group at 1 year without significant intergroup differences. At 1 year, the overall success rates were 92.6% and 92.3% in the OLO and MMC groups, respectively. There were no significant differences in the overall success rates, BCVA, number of medications, morphology of the filtering blebs and rate of complications at the end of the follow-up. CONCLUSION Ologen (OLO) provides similar surgical outcomes in phacotrabeculectomy compared with adjunctive MMC. It may be a new, safe and effective alternative to MMC for combined phacoemulsification and trabeculectomy surgery.
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Altinel MG, Kanra AY, Karadag R, Bayramlar H. Ex-PRESS implantation for different types of glaucoma. Int J Ophthalmol 2019; 12:1290-1297. [PMID: 31456919 DOI: 10.18240/ijo.2019.08.09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 06/18/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the clinical results, efficacy and safety of Ex-PRESS P200 glaucoma shunt implant in different types of medically uncontrolled glaucoma. METHODS The study included 31 eyes of 31 patients that were unresponsive to medical antiglaucomatous therapy in whom Ex-PRESS P200 glaucoma shunt implantation was performed. The demographic characteristics of the patients, type of glaucoma, complete ocular examination results, number of antiglaucomatous drugs before and after surgery, early and late complications of surgery, additional surgical and nonsurgical medical interventions, and success rates were investigated from the patients' files, retrospectively. RESULTS The mean postoperative follow-up time was 16.4±7.5mo. The preoperative mean corrected intraocular pressure (IOP) was 28.7±10.3 mm Hg and postoperative mean corrected IOP was 15.3±5.2 mm Hg (P<0.05) at the last visit. The mean IOP reduction was 39.9% when the preoperative and postoperative values of the last visits were compared. The average number of antiglaucomatous drug use decreased from 3.9±0.3 to 1.7±1.7 postoperatively (P<0.05). The use of antiglaucomatous medications at the last visit was more than in other studies in the literature. The most common complication was conjunctival leakage, which was seen in 7 patients. Other early complications were iris touch, intravitreal hemorrhage, hyphema, choroidal effusion, early transient hypotonia and corneal edema. One of the late complications was endophthalmitis which was seen in one case 6mo after the operation, and the other late complication was opacification of the cornea in one patient. Twelve additional surgical operations associated to Ex-PRESS surgery and 3 bleb needling have done. At the last visit, the complete success rate was 32.3% and the qualified success rate was 77.5% in all patients. CONCLUSION Ex-PRESS P200 glaucoma shunt implantation may be an effective procedure for medically uncontrolled glaucoma with significantly lower use of antiglaucomatous medications.
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Volkova NV, Shchuko AG, Iureva TN, Yakimov AP, Akulenko MV. [Nd:YAG laser goniopuncture as a mandatory adjuvant procedure after non-penetrating deep sclerectomy (long-term observation results)]. Vestn Oftalmol 2019; 135:93-101. [PMID: 31215539 DOI: 10.17116/oftalma201913502193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Today, Nd:YAG laser goniopuncture (LGP) is considered a mandatory non-penetrating deep sclerectomy adjuvant procedure. However, its indications and timing remain debatable. PURPOSE To evaluate the effect of Nd:YAG laser goniopuncture on the long-term hypotensive effectiveness of non-penetrating deep sclerectomy. MATERIAL AND METHODS The study included 114 patients after non-penetrating deep sclerectomy (NPDS). In the control group (n=58), Nd:YAG laser goniopuncture was performed within 3.4±1.9 (1.5-6.7) months, and in the main group (n=56) - within 1.12±0.08 (0.9-1.5) months after the surgery. Ultrasound biomicroscopy (UBM) was used to evaluate the semiotics of trabecular-Descemet's membrane (TDM), intrascleral canal (ISC) and filtering bleb. The follow-up period was 5 years. RESULTS According to UBM data, the thickness (0.10±0.009 mm) and density (50±6%) of TDM (p=0.0001) increased before LGP in the control group, the height of ISC decreased to 0.49±0.19 (0.20-0.40) (p=0.03), the height of UBM scan - to 1.49±0.05 (1.41-2.9) (p=0.0001); IOP (P0) was 18.48±4.7 (11.2-22.9) mmHg (p=0.001). In the main group before LGP, TDM thickness was 0.08±0.006 mm, density was 40±5%, and IOP (P0) was 15.7±4.1 (9.1-18.5) mm Hg. Complete hypotensive success was achieved in 83.6% of cases in the control group and 96.2% in the main group in 6 months; 68.07% and 92.59% in 12 months; 41.3% and 75.8% in 24 months; 15.25% and 48.93% in 36; 15% and 34.8% in 60 months after the surgery, respectively (p=0.0001, 95% confidence interval). CONCLUSION TDM is an additional level of retention of aqueous humor and plays key role in the formation of outflow pathways after NPDS. Performing LGP in the early postoperative period is an effective and safe adjuvant option, which excludes the influence of TDM on the formation of aqueous humor outflow pathways and significantly increases the long-term hypotensive efficacy of non-penetrating deep sclerectomy.
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Vera V, Sheybani A, Lindfield D, Stalmans I, Ahmed IIK. Recommendations for the management of elevated intraocular pressure due to bleb fibrosis after XEN gel stent implantation. Clin Ophthalmol 2019; 13:685-694. [PMID: 31114145 PMCID: PMC6481982 DOI: 10.2147/opth.s195457] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Surgical management of glaucoma offers a means of effective disease control. A gel stent that facilitates drainage to the subconjunctival space offers intraocular pressure (IOP) reduction similar to traditional glaucoma filtering surgeries in a less invasive manner. However, like all subconjunctival filtering procedures that result in a bleb, fibrosis can present as a cause of elevated IOP. The following proposed techniques and recommendations for managing elevated IOP due to bleb fibrosis after gel stent implantation are based on the clinical experience of the authors. The goal of this paper is to improve outcomes following gel stent surgery by providing guidance on assessment of bleb function and strategies for bleb enhancement.
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Morales-Fernández L, Martínez-de-la-Casa JM, Benito-Pascual B, Saénz-Francés F, Santos-Bueso E, Arriola-Villalobos P, Escribano-Martínez J, García-Feijoo J. Cataract extraction in patients with primary congenital glaucoma. Eur J Ophthalmol 2019; 30:525-532. [PMID: 30957520 DOI: 10.1177/1120672119841190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To assess incidence and risk factors of cataract extraction in patients with primary congenital glaucoma, surgical outcome, and complications. MATERIAL AND METHOD Retrospective cohort study, in which 108 patients with primary congenital glaucoma were included. Data collected were need for cataract extraction and at what age, intraocular pressure at diagnosis of primary congenital glaucoma, required antiglaucomatous surgeries, possible mutation in the CYP1B1 gene, and final visual acuity. Among the patients who required cataract extraction were visual acuity, intraocular pressure, and complications, evaluated preoperatively and postoperatively. The data were analysed with STATA. RESULTS A total of 198 eyes of 108 patients were included, with a median follow-up of 8 years (range: 5-53). In all, 32 eyes (16.2%) of 24 patients (22%) required cataract extraction. The median age for cataract extraction was 12.94 years (interquartile range: 2.42-22). The main identified risk factors associated with cataract extraction were antiglaucomatous surgeries (hazard ratio 1.48, p < 0.001) and valvular implant (hazard ratio 2.78, p < 0.001). Lens was implanted in 30/32 eyes and the main complications were intraocular pressure decontrol (n = 13), capsular fibrosis (n = 7), corneal decompensation (n = 4), lens subluxation (n = 4), and endophthalmitis (n = 1). Visual acuity improvement was observed after cataract extraction in 66.67% of eyes. CONCLUSIONS There is a high incidence of cataract surgery in patients with primary congenital glaucoma, but generally outside of pediatric age. A greater risk of cataract extraction was identified in those patients with a greater number of antiglaucomatous surgeries, especially after valvular implantation. Despite the high rate of complications related to cataract extraction in primary congenital glaucoma, good visual improvement was observed after surgery.
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Chen HY, Lin CL, Kao CH. Changes in glaucoma medication numbers after cataract and glaucoma surgery: A nationwide population-based study. Medicine (Baltimore) 2019; 98:e14128. [PMID: 30681574 PMCID: PMC6358407 DOI: 10.1097/md.0000000000014128] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
To determine whether cataract or glaucoma and combined cataract and glaucoma surgery (CGS) affect glaucoma medication usage.We recruited patients who received new diagnoses of glaucoma, either primary open-angle glaucoma (POAG) (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] code 365.1) or primary angle-closure glaucoma (PACG) (ICD-9-CM code 365.2), between 1998 and 2011 and had undergone cataract surgery alone (CS), glaucoma surgery alone (GS), or CGS under the National Health Insurance program in Taiwan. CS, GS, and CGS in all the patients were performed after the glaucoma diagnosis date. The patients were subdivided into CS, CGS, and GS groups. The number of glaucoma medications, including prostaglandin analogs, β-blockers, carbonic anhydrase inhibitors, α-agonists, pilocarpine, and a combination of drugs, in each prescription, were compared before and after surgery.The mean number of glaucoma medications in each prescription before the surgery increased from approximately 0.5/1 (CS/CGS + GS) to a peak of 1.75/3 within 3 months before the index date. The mean number of glaucoma medications in each prescription reduced to 0 (CS group) and to approximately 0.5 (CGS and GS) at the end of the 3-year follow-up period. The mean number of glaucoma medications in each prescription significantly reduced at the time points within 6 months, between 6 months and 2 years, and during 2 to 3 years after surgery in each group. At the end of the 3-year period, the reduction effect was most evident in the CS group. Similar trends were also observed in the POAG and PACG group.CS, GS, and CGS significantly reduced the number of glaucoma medications used by the glaucoma patients.
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Pham CN, Radcliffe NM, Vu DM. Surgical outcomes associated with a sutureless drainage valve implantation procedure in patients with refractory glaucoma. Clin Ophthalmol 2018; 12:2607-2615. [PMID: 30587907 PMCID: PMC6296183 DOI: 10.2147/opth.s186369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Purpose To evaluate the safety and efficacy profile of a sutureless procedure for drainage valve implantation with combined cataract removal and/or endoscopic cyclophotocoagulation (ECP). Materials and methods A retrospective case series study of consecutive surgeries for Ahmed glaucoma valve (AGV; New World Medical) implantation in a 1-year period was analyzed. The surgery was performed using a Tisseel fibrin sealant (Baxter Healthcare Corporation) in place of sutures. Some subsets within the case series also included a cataract extraction with intraocular lens (CEIOL) insertion and/or ECP (Endo Optiks) within the same procedure. Primary outcomes for this study including efficacy (IOP change, reduction in medications) and safety (complications and reoperations) were measured out to 3 years. Comparisons between subsets were made using ANOVA with post hoc Tukey’s pairwise tests. Results One hundred twenty-two eyes of 99 patients underwent sutureless AGV implantation surgery. Of the 122, 18 had an AGV implantation only, 46 had an AGV + CEIOL, 35 had an AGV + ECP, and 23 had an AGV + CEIOL + ECP. In total, there was a significant decrease in IOP (P<0.0001) and number of glaucoma medications (P≤0.0054) at each postoperative visit. In a one-way ANOVA, there were no significant differences in mean IOP between the different subsets of surgeries (P>0.05); 10.7% and 14.8% of eyes required a reoperation either for a complication or for uncontrolled glaucoma, respectively. Conclusion Sutureless valve implantation is associated with a significant reduction in IOP percentage and medication use after the procedure with a safety profile comparable with other glaucoma surgeries.
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Lanzagorta-Aresti A, Perez-Lopez M, Davo-Cabrera JM, Palacios-Pozo E. Prospective pilot study comparing deep sclerectomy outcomes with a long-term and intense corticosteroid treatment versus a standard one. BMJ Open Ophthalmol 2018; 3:e000165. [PMID: 30519640 PMCID: PMC6243469 DOI: 10.1136/bmjophth-2018-000165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 09/13/2018] [Accepted: 09/24/2018] [Indexed: 11/04/2022] Open
Abstract
Objective To compare prospectively intraocular pressure (IOP) results after deep sclerectomy (DS) using a topical short-term corticosteroid treatment (STCT, 1 month) versus a topical long-term and intense corticosteroid treatment (LTCT, 6 months) in a two2 year-follow-up. Methods Patients with medically uncontrolled open angle glaucoma were prospectively recruited and underwent a DS. Results We operated 45 eyes of 45 patients, 22 in STCT group and 23 in LTCT group. Median preoperative IOP was 27 (22-36.75) mm Hg for STCT and for 25 (22-28) mm Hg for LTCT group without significant difference (p=0.195). Median postoperative IOP was 4 (3-6.25) mm Hg in STCT group versus 2 (0-5) mm Hg in LTCT at day 1 (p=0.003); 8.5 (5.75-11.25) mm Hg (STCT) vs 6 (4-9) mm Hg (LTCT) at week 1 (p=0.079); 17.5 (14.75-22.25) mm Hg (STCT) vs 13 (10-14) mm Hg (LTCT) at month 1 (p=0.001); 16 (12-20) mm Hg (STCT) vs 12 (10-15) mm Hg (LTCT) at month 3 (p=0.008); 17 (14-20) mm Hg (STCT) vs 12 (10-14) mm Hg (LTCT) at month 6 (p=0.000); 16 (14-20) mm Hg (STCT) vs 14 (10-16) mm Hg (LTCT) at year 1 (p=0.002) and 17.5 (15-19) mm Hg (STCT) vs 14 (12-16) mm Hg (LTCT) at year 2 (p=0.001). The complete success rate was 54.5 % in STCT and 87 % in LTCT (p=0.018). Conclusions A long-term and intensive postoperative treatment enhances success rate in DS compared with a standard protocol.
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Mauro A, Massarotti N, Mohamed S, Uña IR, Romano MR, Romano V. A novel patient-oriented numerical procedure for glaucoma drainage devices. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2018; 34:e3141. [PMID: 30101520 DOI: 10.1002/cnm.3141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 06/08/2023]
Abstract
The present work analyses the performance of four glaucoma drainage devices, by means of a novel patient-oriented numerical procedure. The procedure is based on the three-dimensional geometry reconstruction from the stacks of tomographic images of a human eye, at different angles, on meshing and on thermo-fluid dynamics modelling activities, carried out on the reconstructed computational domain. The current three-dimensional eye model considers anterior chamber (AC), trabecular meshwork, Schlemm's canal, and collector channels, making use of generalised porous medium approach for modelling ocular porous tissue and cavities. The intraocular pressure (IOP) management inside AC of human eye is analysed, by comparing the results obtained for four drainage devices implanted in a human eye for glaucoma treatment, ie, ExPRESS shunt, iStent inject, SOLX gold micro shunt, and the novel silicon shunt device. The numerical results allow predicting the effects of the installation of these implants on human eyes, in terms of IOP decrease, aqueous humour velocity, pressure, friction coefficient, and local Nusselt number, pointing out the clear distinction between pre-operative and post-operative eye conditions for different glaucoma surgical techniques.
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Jacobovitz S, Massote JA, Cronemberger S. Laminar drainage implant. Eur J Ophthalmol 2018; 29:278-286. [PMID: 30474392 DOI: 10.1177/1120672118815066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To assess the feasibility of a novel surgical technique in painful blind eyes. DESIGN A prospective safety study conducted at the Federal University of Minas Gerais, Brazil. PARTICIPANTS/SAMPLES A total of 15 end-stage glaucomatous eyes without light perception vision. METHODS After implantation, conjunctival hyperemia, discharge, erosion, aqueous humor leakage, corneal edema, hyphema, anterior chamber cells and depth, dislocation of the implant, and filtering bleb height were assessed by slit-lamp biomicroscopy. Intraocular pressure was measured preoperatively and 24 months following surgery. A numerical rating scale was used to evaluate pain. Anterior segment optical coherence tomography was also assessed. RESULTS Laminar drainage implant surgery was performed in all patients without major complications. Mean intraocular pressure was significantly reduced after surgery without hypotensive medication (preoperatively 54.5 ± 5.1 mmHg vs 24 months after surgery 37.0 ± 15.4 mmHg, p = 0.003). Subjective ocular pain intensity also reduced (preoperatively 10 vs at 24-month follow-up visits 0). Corneal edema incidence reduced from 85.7% (95% confidence interval: 57.2%-98.2%) to 16.7% (95% confidence interval: 2.1%-48.4%) at the 24-month follow-up. No patients experienced a prolonged flat anterior chamber or erosion of overlying tissues. CONCLUSION The surgery was feasible and safe in painful blind eyes.
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Tanna AP, Johnson M. Rho Kinase Inhibitors as a Novel Treatment for Glaucoma and Ocular Hypertension. Ophthalmology 2018; 125:1741-1756. [PMID: 30007591 PMCID: PMC6188806 DOI: 10.1016/j.ophtha.2018.04.040] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/24/2018] [Accepted: 04/30/2018] [Indexed: 01/11/2023] Open
Abstract
In an elegant example of bench-to-bedside research, a hypothesis that cells in the outflow pathway actively regulate conventional outflow resistance was proposed in the 1990s and systematically pursued, exposing novel cellular and molecular mechanisms of intraocular pressure (IOP) regulation. The critical discovery that pharmacologic manipulation of the cytoskeleton of outflow pathway cells decreased outflow resistance placed a spotlight on the Rho kinase pathway that was known to regulate the cytoskeleton. Ultimately, a search for Rho kinase inhibitors led to the discovery of several molecules of therapeutic interest, leaving us today with 2 new ocular hypotensive agents approved for clinical use: ripasudil in Japan and netarsudil in the United States. These represent members of the first new class of clinically useful ocular hypotensive agents since the US Food and Drug Administration approval of latanoprost in 1996. The development of Rho kinase inhibitors as a class of medications to lower IOP in patients with glaucoma and ocular hypertension represents a triumph in translational research. Rho kinase inhibitors are effective alone or when combined with other known ocular hypotensive medications. They also offer the possibility of neuroprotective activity, a favorable impact on ocular blood flow, and even an antifibrotic effect that may prove useful in conventional glaucoma surgery. Local adverse effects, however, including conjunctival hyperemia, subconjunctival hemorrhages, and cornea verticillata, are common. Development of Rho kinase inhibitors targeted to the cells of the outflow pathway and the retina may allow these agents to have even greater clinical impact. The objectives of this review are to describe the basic science underlying the development of Rho kinase inhibitors as a therapy to lower IOP and to summarize the results of the clinical studies reported to date. The neuroprotective and vasoactive properties of Rho kinase inhibitors, as well as the antifibrotic properties, of these agents are reviewed in the context of their possible role in the medical and surgical treatment of glaucoma.
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Abdalrahman O, Rodriguez AE, Alio Del Barrio JL, Alio JL. Treatment of chronic and extreme ocular hypotension following glaucoma surgery with intraocular platelet-rich plasma: A case report. Eur J Ophthalmol 2018; 29:NP9-NP12. [PMID: 30295074 DOI: 10.1177/1120672118803515] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To report a new approach for the treatment of severe ocular hypotony secondary to glaucoma filtering surgery with mitomycin C by injecting autologous eye platelet-rich plasma (E-PRP) in the anterior chamber to block excessive diffuse filtration through an abnormally thinned sclera. METHODS A 49-year-old patient with the Axenfeld-Rieger syndrome and severe chronic hypotony and corneal edema following filtering glaucoma surgery with mitomycin C received an isolated injection of 0.3 mL of autologous platelet-rich plasma in the anterior chamber. RESULTS Intraocular pressure measured by Goldman's applanation tonometry 6 h after the procedure improved to 18 mmHg. Intraocular pressure remained stable along the full follow-up period of 6 month. No filtration or hypotony or any other complications were observed. CONCLUSION Intracameral platelet-rich plasma (E-PRP) injection was an effective, rapidly effective, and safe procedure for treatment of severe chronic ocular hypotony following glaucoma filtrating surgery.
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Yamashita H, Tanioka K, Miyake G, Ota I, Noda T, Miyake K, Chiba T. 8K ultra-high-definition microscopic camera for ophthalmic surgery. Clin Ophthalmol 2018; 12:1823-1828. [PMID: 30275678 PMCID: PMC6157988 DOI: 10.2147/opth.s171233] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background We have developed a new compact lightweight 8K ultra-high-definition (UHD; 7,680×4,320 pixels) camera and started medical application with an ophthalmic surgical microscope which is interchangeable with the conventional high-definition (1,920×1,080 pixels)/4K UHD (3,840×2,160 pixels) microscopic camera. Methods We did a feasibility study to apply our 8K UHD microscope in cataract surgery, glaucoma surgery and vitreous surgery using pig cadaver eyes. The 8K UHD microscope comprises a surgical microscope, a camera adaptor with relay lenses, an 8K UHD camera and an 8K UHD LCD to share the 8K UHD images with all surgical staff in real time. Results In ophthalmic surgeries, higher resolution images than conventional microscopic cameras were obtained with 8K UHD LCD equivalent to the observation through the microscopic eye pieces. Conclusion Based on the results of this feasibility study, clinical trials on human ophthalmic surgery using the new 8K UHD microscopic camera should be conducted in the near future.
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Islamaj E, Jordaan-Kuip CP, Vermeer KA, Lemij HG, de Waard PWT. Motility Changes and Diplopia After Baerveldt Glaucoma Drainage Device Implantation or After Trabeculectomy. Transl Vis Sci Technol 2018; 7:7. [PMID: 30221073 PMCID: PMC6136847 DOI: 10.1167/tvst.7.5.7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022] Open
Abstract
Purpose The purpose of this study was to quantify any diplopia and motility changes after the implantation of a Baerveldt glaucoma implant (BGI) or after trabeculectomy (TE). Methods We analyzed 51 patients with a BGI and 52 patients with a TE from a prospective cohort study. To quantify any diplopia, we asked patients about the presence of diplopia at 1 year after surgery. To quantify any ocular motility changes, we measured ductions in eight gaze directions, the patients' ocular alignment and their fusion range before and 1 year after surgery. Results In the BGI group, 14 patients (28%) experienced diplopia compared with one patient (2%) in the TE group (P < 0.001). Duction changes were more commonly observed in the BGI group (35%) than in the TE group (19%). In the BGI group, ductions were mostly restricted in elevation (13%; P < 0.001), in abduction (13%), in elevation in 25° adduction (13%; P = 0.044), and in elevation in 25° abduction (25%; P < 0.001). In 32% of the patients, their near horizontal ocular alignment shifted, notably in exodirection (P = 0.04). The fusion range decreased significantly in the horizontal direction (−12.6° ± 10.3°, mean ± standard deviation; P = 0.01). Conclusions BGI surgery was significantly associated with postoperative diplopia and impaired eye motility (reduced ductions), mostly present in abduction, elevation, elevation in 25° adduction, and elevation in 25° abduction. Even without impaired ductions, diplopia could come about. Translational Relevance By studying diplopia across glaucoma patients prospectively with diplopia questionnaires and extensive orthoptic measurements, we gain better insight into its occurrence.
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Costa JC, Alió J. Significant hyperopic shift in a patient with extreme myopia following severe hypotonia caused by glaucoma filtering surgery. Eur J Ophthalmol 2018; 29:NP6-NP9. [PMID: 30175614 DOI: 10.1177/1120672118794564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION: To report the case of a high hyperopic refractive shift associated with significant shortening of the ocular axial length following glaucoma filtering surgery. METHODS: Case report. Patient's records were consulted retrospectively. RESULTS: A 57-year-old woman, highly myopic, with a history of bilateral intraocular refractive surgery in 1998 (phakic lens ZB5M) and bilensectomy in 2011 (phakic intraocular lens extraction plus cataract surgery with pseudophakic intraocular lens implantation), presented with consistently high intraocular pressure. Despite the treatment with different topical antiglaucomatous medications and good compliance, her intraocular pressure values remained consistently above 20 mmHg. In 2016, the patient was submitted for glaucoma filtering surgery and the mini shunt Ex-Press was implanted in both the eyes (3 months between surgeries). On the first postoperative day, the eyes were hypotonic (intraocular pressure of 5 mmHg) and bilateral macular edema was observed. Three days later, the intraocular pressure in both the eyes reached values higher than 6 mmHg (between 6 and 14 mmHg). Five months after the surgery the macular edema resolved and a significant shortening of the axial length and an important hyperopic refractive shift was observed. When comparing the preoperative and postoperative (18 months) measurements, the variation of the axial length was 2.49 mm in the right eye and 2.19 mm in the left eye; the patient refraction (spherical equivalent) shifted 2.50 diopters in the right eye and 1.75 diopters in the left eye. CONCLUSION: To the best of our knowledge, we report herein the first documented case of an axial length change of this magnitude after glaucoma filtering surgery.
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Jankowska-Szmul J, Dobrowolski D, Wylegala E. CO 2 laser-assisted sclerectomy surgery compared with trabeculectomy in primary open-angle glaucoma and exfoliative glaucoma. A 1-year follow-up. Acta Ophthalmol 2018; 96:e582-e591. [PMID: 29655275 DOI: 10.1111/aos.13718] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/14/2018] [Indexed: 12/26/2022]
Abstract
PURPOSE To report on the efficacy and safety of CO2 laser-assisted sclerectomy surgery (CLASS) compared with trabeculectomy in primary open-angle glaucoma and exfoliative glaucoma. METHODS One hundred and thirty-one patients underwent CLASS (66 patients) or trabeculectomy (65 patients) and were followed up for 12 months. 'Complete success' was defined as intraocular pressure (IOP) between 10 and 18 mmHg and reduced by at least 30% from the baseline without medications, while 'qualified success' was compliant with the above criteria with or without the medications. RESULTS Comparing CLASS with trabeculectomy at 1 year, the mean IOP reduction rate was 32.6 ± 10.8% versus 40.6 ± 15.9% (p < 0.001) and the average use of medications was 1.4 ± 1.4 versus 0.7 ± 1.1 (p < 0.05). At 12 months, the complete success rate was 35% for CLASS versus 60% for trabeculectomy (p < 0.01), while the qualified success rate was 74% versus 75%, respectively, with no significant difference in qualified success rate between the groups at any time-point (p > 0.05). Compared with CLASS, patients after trabeculectomy developed a higher rate of early complications (9.1% versus 29.2%, p = 0.004), higher endothelial cell density (ECD) loss (1.4 ± 1.4% versus 6.5 ± 4.8%, p < 0.001), higher astigmatism (0.0 ± 0.1 versus 0.1 ± 0.2, p < 0.001) and significant visual acuity deterioration (0.1 ± 0.1; range 0-2 lines versus 0.4 ± 0.6; range 0-3 lines, p = 0.016). CONCLUSION Although CLASS shows a less potent hypotensive effect, it is similar to trabeculectomy in the qualified success rate and offers the reduction in medications up to 12 months. With a more attractive complications profile, CLASS may be an alternative to trabeculectomy, especially at the earlier glaucoma stage and in patients with a low ECD.
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Li QS, Bao FF, Zhang ZY, Ma K. Effect of long-term topical latanoprost medication on conjunctival thickness in patients with glaucoma. Int J Ophthalmol 2018; 11:1158-1162. [PMID: 30046533 DOI: 10.18240/ijo.2018.07.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/23/2018] [Indexed: 11/23/2022] Open
Abstract
AIM To investigate the effect of long-term use of topically administered latanoprost on conjunctival thickness (CT) and conjunctival epithelium thickness (CET) in the patients with glaucoma. METHODS A series of 106 glaucomatous patients were included. Of the 106 eyes, 55 eyes were treated with latanoprost eye drops once a day (latanoprost group), while 51 eyes were treated with carteolol hydrochloride eye drops (carteolol group). All the included patients completed a 2-year follow-up. CT and CET were measured with optical coherence tomography (OCT) in all patients at presentation and at 2-year visit, respectively. Statistical analysis was then performed to compare the change in CT and CET. RESULTS At presentation, there was no difference in CET (t=0.400, P=0.689) or CT (t=1.14, P=0.259) between the two groups. No significant difference was found in CET (61.65±5.35 µm at baseline, 60.36±6.36 µm at 2-year follow-up, respectively; t=1.977, P=0.0531), while there was a significant decrease in CT from 201.45±14.99 µm at baseline to 167.81±14.57 µm at 2-year visit (t=14.1407, P<0.001) in the latanoprost group. At 2-year follow-up, no statistically difference was found in CET (62.24±5.27 µm; t=1.086, P=0.282) or CT (201.23±12.45 µm; t=1.44, P=0.154) compared to it at baseline (CET: 61.23±5.42 µm; CT: 198.76±13.68 µm, respectively) in the carteolol group. CONCLUSION A significant decrease in conjunctival thickness is found in glaucoma patients treated with long-term topical latanoprost; its potential effect on the outcome of filtration surgery should be considered.
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Abbas A, Agrawal P, King AJ. Exploring literature-based definitions of hypotony following glaucoma filtration surgery and the impact on clinical outcomes. Acta Ophthalmol 2018; 96:e285-e289. [PMID: 29193812 DOI: 10.1111/aos.13601] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 08/13/2017] [Indexed: 11/27/2022]
Abstract
PURPOSE To highlight the variations in published definitions of hypotony and their impact on reported clinical outcomes. To propose a revised definition, focusing on clinically significant hypotony (CH). METHODS Literature review of hypotony definitions published between January 2010 and December 2015 was carried out. Numerical definitions for hypotony, its onset, duration and associated clinical signs were recorded. Each definition was applied to surgical outcomes data collected prospectively from a cohort of 300 glaucoma patients treated at a single centre. The sensitivity and specificity of each definition in identifying CH [defined as low intraocular pressure (IOP) with signs of maculopathy hypotony and choroidal detachment] were calculated. RESULTS A total of 128 eligible papers were identified, and 14 different definitions for hypotony were extracted. In 53 (41.4%), hypotony was not defined. In the remaining 75 (58.6%), the numerical definitions varied between 4 and 8 mmHg, and of these, 24 (32%) included the onset and duration of hypotony as part of the definition. Definition-dependent hypotony rates within the cohort varied between 1% and 59.3%. No statistical differences were found between the groups based on corneal thickness or axial length. Clinically significant hypotony (CH) was identified in 37 (12.3%), with large differences in the sensitivity and specificity among published definition. CONCLUSION Variations in defining postoperative hypotony can have a large impact on the reported success and failure rates among studies. There is a need for a more robust universal definition, focusing on clinically important signs, to allow better comparison between different treatment modalities.
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Williams AM, Huang W, Muir KW, Stinnett SS, Stone JS, Rosdahl JA. Identifying risk factors for blindness from primary open-angle glaucoma by race: a case-control study. Clin Ophthalmol 2018; 12:377-383. [PMID: 29503525 PMCID: PMC5824746 DOI: 10.2147/opth.s143417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose To examine the factors associated with blindness from primary open-angle glaucoma (POAG) among black and white patients at our institution. Patients and methods For this retrospective, case-control study, patients legally blind from POAG ("cases") were matched on age, race, and gender with non-blind POAG patients ("controls"). Thirty-seven black case-control pairs and 19 white case-control pairs were included in this study. Clinical variables were compared at initial presentation and over the course of follow-up. Results Black case-control pairs and white case-control pairs had similar characteristics at presentation, including cup-to-disc ratio and number of glaucoma medications. However, over the course of follow-up, black cases underwent significantly more glaucoma surgeries than matched controls (2.4 versus 1.2, p=0.001), whereas white cases and controls had no significant difference in glaucoma operations (0.9 versus 0.6, p=0.139). Our analysis found that glaucoma surgery is associated with blindness in black patients (odds ratio [OR] 1.6, 95% CI 1.1-2.2) but not in white patients (OR 1.5, 95% CI 0.7-3.2). Conclusion Black and white case-control pairs with POAG shared similar risk factors for blindness at presentation. However, over the follow-up period, black cases required significantly more glaucoma surgeries compared to black controls, whereas there was no significant difference in surgery between white cases and controls. There was no difference in medication changes in either case-control set.
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Jiang N, Zhao GQ, Lin J, Hu LT, Che CY, Wang Q, Xu Q, Li C, Zhang J. Meta-analysis of the efficacy and safety of combined surgery in the management of eyes with coexisting cataract and open angle glaucoma. Int J Ophthalmol 2018; 11:279-286. [PMID: 29487820 DOI: 10.18240/ijo.2018.02.17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 11/21/2017] [Indexed: 11/23/2022] Open
Abstract
AIM To conduct a systematic review and quantitative Meta-analysis of the efficacy and safety of combined surgery for the eyes with coexisting cataract and open angle glaucoma. METHODS We performed a systematic search of the related literature in the Cochrane Library, PubMed, EMBASE, Web of Science databases, CNKI, CBM and Wan Fang databases, with no limitations on language or publication date. The primary efficacy estimate was identified by weighted mean difference of the percentage of intraocular pressure reduction (IOPR%) from baseline to end-point, the percentage of number of glaucoma medications reduction from pre- to post-operation, and the secondary efficacy evaluations were performed by odds ratio (OR) and 95% confidence interval (CI) for complete and qualified success rate. Besides, ORs were applied to assess the tolerability of adverse incidents. Meta-analyses of fixed or random effect models were performed using RevMan software 5.2 to gather the consequences. Heterogeneity was evaluated by Chi2 test and the I2 measure. RESULTS Ten studies enrolling 3108 patients were included. The combined consequences indicated that both glaucoma and combined cataract and glaucoma surgery significantly decreased IOP. For deep sclerectomy vs deep sclerectomy plus phacoemulsification and canaloplasty vs phaco-canaloplasty, the differences in IOPR% were not all statistically significant while trabeculotomy was detected to gain a quantitatively greater IOPR% compared with trabeculotomy plus phacoemulsification. Furthermore, there was no statistical significance in the complete and qualified success rate, and the rates of adverse incidents for trabeculotomy vs trabeculotomy plus phacoemulsification. CONCLUSION Compared with trabeculotomy plus phacoemulsification, trabeculectomy alone is more effective in lowering IOP and the number of glaucoma medications, while the two surgeries can not demonstrate statistical differences in the complete success rate, qualified success rate, or incidence of adverse incidents.
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Seuthe AM, Januschowski K, Mariacher S, Ebner M, Opitz N, Szurman P, Boden K. The effect of canaloplasty with suprachoroidal drainage combined with cataract surgery - 1-year results. Acta Ophthalmol 2018; 96:e74-e78. [PMID: 28449300 DOI: 10.1111/aos.13393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 12/16/2016] [Indexed: 12/01/2022]
Abstract
PURPOSE The purpose of this study was to investigate the safety and efficacy of phacocanaloplasty with suprachoroidal drainage (PCscD) and to compare its intraocular pressure (IOP)-lowering and drug-sparing effect to canaloplasty with suprachoroidal drainage (CscD). METHODS The study retrospective interventional study included patients with open-angle glaucoma or secondary forms of glaucoma who underwent either CscD or PCscD between the year 2011 and 2014 in Knappschaft Eye Clinic Sulzbach. Primary end-points were IOP reduction and the number of IOP-lowering medication after 12 months. Secondary end-points were intraoperative and postoperative complications. RESULTS A total of 328 eyes were included, 193 were treated with CscD and 135 underwent PCscD. Canaloplasty with scD achieved an IOP reduction of 37.0% (from 20.9 ± 3.6 mmHg to 13.2 ± 2.6 mmHg) after 1 year, whereas PCscD showed a significant higher reduction of 47.4% (from 23.2 ± 5.1 mmHg to 12.2 ± 1.7 mmHg). Reduction in IOP-lowering medication was higher after PCscD (from 3.6 ± 0.6 to 0.2 ± 0.5) than after CscD (from 3.5 ± 0.8 to 0.7 ± 1.0). Twelve months after surgery 55.5% in the CscD group and 80.2% in the PCscD group were free of IOP-lowering medication. In both groups, no severe or sight-threatening complications occurred. CONCLUSION Combining cataract surgery and CscD achieves a higher IOP reduction, and patients postoperatively need less IOP-lowering medication than after CscD alone.
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Alzuhairy S, Alalola FS, AlAkeel HA, Alayed DM, Al-Harbi IM, Al-Shetwi MM, Al-Nasser MA, AlJurayfani H, Mousa A. Profile and management outcomes of glaucoma cases at Qassim University Hospital. Int J Health Sci (Qassim) 2018; 12:20-24. [PMID: 30202404 PMCID: PMC6124836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE In view of the paucity of community-based data about glaucoma in Saudi Arabia, better planning to address visual disabilities due to glaucoma is a challenge. Providing hospital-based data from semi-urban places will complement the picture based on information of tertiary eye hospitals of capital. METHODS This is one-armed cohort study. All patients attending glaucoma subspecialty unit at our university hospital during 2014-2015 were evaluated for their demographic details, ocular status at presentation, management modalities, and follow-up status of treated eyes. The qualified and absolute success rates (intraocular pressure <22 mmHg with/without medication) were estimated. The determinants of success were analyzed. RESULTS We assessed 219 eyes of 122 patients of glaucoma patients. Bilateral glaucoma was in 97 (79.7%) patients. Primary chronic angle closure glaucoma in 102 (46.6%) eyes and primary open angle glaucoma (POAG) in 56 (25.6%) were the main types of glaucoma. More than half of the eyes with glaucoma had a normal functional vision, while 9.2% had vision <20/400. At presentation, 133 (60.7%) had undergone surgical procedure including laser iridotomy. At last follow-up, 135 (62%) of glaucomatous eyes were not using glaucoma medications. The decline in a number of glaucoma medications at last follow-up compared to 1st visit was statistically significant (P < 0.001). CONCLUSIONS At tertiary eye center of semi-urban area of Saudi Arabia had primary chronic angle-closure glaucoma (PCACG) as the main type of adult glaucoma. Vision does not seem to understand the severity of glaucoma at presentation. POAG cases were medically managed while PCACG cases were managed both with laser and surgeries.
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Choroidal thickness increase after micropulse transscleral cyclophotocoagulation. Rom J Ophthalmol 2018; 62:144-148. [PMID: 30206558 PMCID: PMC6117517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Glaucoma, the affliction that results in optic nerve damage and vision loss, is the main cause of irreversible blindness. The goal of this study was to describe our experience and OCT findings regarding glaucoma patients who underwent MicroPulse Transscleral Cyclophotocoagulation. A variety of glaucoma patients treated with MP-TSCPC were included in our study. LASER settings were 2000mW of 810nm infrared diode micropulse LASER, 31.3% duty cycle and the duration of treatment was between 80-130 s per hemisphere to each eye, at 3 mm of corneoscleral limbus, spearing the nasal and temporal clock hours and also the region with previous filtration surgeries (trabeculectomy). We conducted a prospective study in which twenty-two patients underwent MP-TSCPC under local anaesthesia and they were examined one week, one month, three months, and six months postoperatively. Mean IOP dropped from 35.23 mmHg preoperatively to 17.73mmHg (49.67%) at 1 week follow-up, to 21.81 mmHg (38.09%) at 1 month follow-up, to 22.34 mmHg at 3 months follow-up and to 23.56 mmHg at 6 months follow-up. Four patients (15.8%) underwent a second treatment (at 1 month after the initial treatment) due to insufficient IOP decrease, two of them with success in lowering the IOP postoperatively. By measuring the foveolar choroidal thickness via macular OCT scan, we noticed that all responsive patients had a thicker choroid one week after the laser treatment, with a steady increase of a mean 7.3% that was sustained at one and three months follow-up, while in non-responsive patients, the choroidal thickness remained the same postoperatively, or had a significant decrease. The increase in choroidal thickness in all patients in whom we observed IOP reduction was a significant correlation that supported the mechanism of increased uveoscleral outflow obtained from LASER treatment.
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Choy BNK. Comparison of surgical outcome of trabeculectomy and phacotrabeculectomy in Chinese glaucoma patients. Int J Ophthalmol 2017; 10:1928-1930. [PMID: 29259916 DOI: 10.18240/ijo.2017.12.23] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/23/2017] [Indexed: 11/23/2022] Open
Abstract
Our study retrospectively reviewed the surgical outcomes up to 3mo of 38 consecutive Chinese glaucoma patients who underwent trabeculectomy (n=18) or phacotrabeculectomy (n=20). Baseline age, visual acuity, and intraocular pressure were comparable. Intraocular pressure from post-operative 1d to 3mo were similar between 2 groups. Complete success was achieved in 65% of phacotrabeculectomy, and 66.7% of trabeculectomy cases; while failure occurred in 16.7% of phacotrabeculectomy, and 10% of trabeculectomy cases at 3mo. Phacotrabeculectomy group consistently showed better improvement in visual acuity. Diffuse blebs occurred in 65% of phacotrabeculectomy and 83% of trabeculectomy eyes; and flat blebs in 35% of phacotrabeculectomy, but none after trabeculectomy. There was more hypotony (5% vs 0) after phacotrabeculectomy. To conclude, phacotrabeculectomy and trabeculectomy demonstrated comparable intraocular pressure control up to 3mo post-operatively. However, phacotrabeculectomy patients had better visual acuity improvement. Nonetheless, more diffuse bleb and less hypotony were present following trabeculectomy.
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El Wardani M, Bergin C, Bradly K, Sharkawi E. Baerveldt shunt surgery versus combined Baerveldt shunt and phacoemulsification: a prospective comparative study. Br J Ophthalmol 2017; 102:1248-1253. [PMID: 29246892 DOI: 10.1136/bjophthalmol-2017-310698] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 10/30/2017] [Accepted: 11/29/2017] [Indexed: 11/04/2022]
Abstract
AIM To examine the efficacy and safety of Baerveldt tube (BT) implantation compared with combined phacoemulsification and Baerveldt tube (PBT) implantation in patients with refractory glaucoma. METHODS Seventy-six eyes of 76 patients were enrolled, 38 pseudophakic eyes underwent BT implantation alone and 38 phakic eyes underwent the BT implantation combined with phacoemulsification. Groups were matched for preoperative intraocular pressure (IOP) and number of glaucoma medications. Preoperative and postoperative measures recorded included patient demographics, visual acuity (VA), IOP, number of antiglaucoma medications and all complications. Patients were followed up for a minimum of 36 months. Failure was defined as: inadequate IOP control (IOP≤5 mm Hg/>21 mm Hg/<20% reduction from baseline, reoperation for glaucoma, loss of light perception vision, or removal of the implant). RESULTS There was a significant difference in failure rates between groups at 36 months (PBT 37% vs BT 15%, P=0.02). There was no significant difference for PBT versus BT in preoperative baseline ocular characteristics. At 36 months: median IOP=14 mm Hg vs 12 mm Hg, P=0.04; mean number of antiglaucomatous medications=1.7 vs 1.3, P=0.61; median VA=0.8 vs 0.7, P=0.44. Postoperative complication rates were similar in both groups (n=5 vs 5; 13% vs 13%). CONCLUSIONS Failure rates were significantly greater in the PBT group at 3 years. Median IOP was also significantly higher in the PBT group. These results suggest that combining phacoemulsification with aqueous shunt surgery may have a negative effect on long-term shunt bleb survival.
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