Corneal Outcomes Following Cataract Surgery Using Ophthalmic Viscosurgical Devices Composed of Chondroitin Sulfate-Hyaluronic Acid: A Systematic Review and Meta-Analysis

Background: Ophthalmic viscosurgical devices (OVDs) are commonly used during cataract surgery to protect the corneal endothelium. A systematic literature review and meta-analysis were conducted to assess the clinical evidence of OVDs composed of chondroitin sulfate-hyaluronic acid (CS-HA) versus other OVDs in maintaining endothelial cell density (ECD) and corneal thickness (CT). Methods: MEDLINE and EMBASE databases were searched from 2000 to 2020. Randomized controlled trials (RCTs, N ≥ 20 per group) comparing an OVD containing CS-HA (ie, VISCOAT®, DuoVisc® or DisCoVisc®) to any other OVD were included. The identified comparators were limited to the OVDs found in the literature, which included those composed of HA-only or hydroxypropyl methylcellulose (HPMC). Outcomes of focus included changes in ECD (baseline to 3 months) and CT (baseline to 24 hours). Meta-analyses were performed using R software, to assess mean differences (MD) in ECD and CT change between CS-HA OVDs and HA-only or HPMC OVDs. Results: A total of 966 abstracts were screened, and data were extracted from 12 RCTs. Meta-analyses using a random-effects model revealed significantly lower percent (%) decrease in ECD for CS-HA OVDs compared to both HA-only (MD: −4.10%; 95% CI: −5.81 to −2.40; p \u3c 0.0001; 9 studies) and HPMC (MD: −6.47%; 95% CI: −10.41 to −2.52; p = 0.001; 2 studies) products. Similarly, % CT increase was significantly lower with CS-HA than with HA-only OVDs (MD: −3.22%; 95% CI: −6.24% to −0.20%; p = 0.04; 4 studies). However, there were no significant differences when comparing % CT change between CS-HA and HPMC OVDs (MD: 2.65%; 95% CI: −0.43% to 0.95%; p = 0.4; 2 studies). Conclusion: CS-HA OVDs lead to less postoperative loss of endothelial cells and may better protect corneal endothelium during cataract surgery, relative to other OVDs. Future randomized studies may be needed to solidify these findings

Persistent Mydriasis Following Gonioscopy-Assisted Transluminal Trabeculotomy

Herein we describe 2 cases of persistent mydriasis after gonioscopy-assisted transluminal trabeculotomy for open angle glaucoma. Both surgeries were uneventful, but the patients experienced postoperative hyphema and intraocular pressure elevation. They then developed persistent fixed and dilated pupils resistant to pilocarpine that led to intolerable photosensitivity and glare. An iris cerclage pupilloplasty was performed with adequate relief of symptoms in one case

The Boston keratoprosthesis in 2 patients with autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy.

PURPOSE: To report the results of Boston keratoprosthesis in patients with autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED). CASE REPORTS: Case 1 is a 36-year-old woman with APECED and ocular history of corneal ulcers in both eyes who presented with severe dry eyes. Her ocular examination showed diffuse corneal vascularization and stromal scarring in the left eye. She underwent Boston type 1 keratoprosthesis, cataract extraction, and sulcus intraocular lens implant in the left eye to improve visual acuity. Case 2 is a 49-year-old man with possible APECED and ocular history of phlyctenular keratitis, recurrent corneal erosions, and scarring presented with dense corneal vascularization and scarring in both eyes. He underwent a Boston type 1 keratoprosthesis, clear lens extraction, and posterior chamber intraocular lens implant in the right eye. RESULTS: The surgeries were uneventful. On postoperative day 1, visual acuity of 20/40 was achieved in both patients and it remained stable during the 2-year follow-up period. There were no postoperative complications seen in either patient. CONCLUSIONS: APECED is a rare disorder, which can be associated with bilateral keratitis or diffuse corneal vascularization in addition to systemic findings and ectodermal signs. The Boston type 1 keratoprosthesis is a promising treatment option to improve visual acuity in patients with APECED with corneal involvement

Economic Impact Analysis of Custom Pak® on Cataract and Vitreoretinal Surgery in the United States

PURPOSE: Implicit costs of surgical preparation and materials management for cataract/anterior segment and retinal/posterior segment procedures are often unquantified. Use of ophthalmological surgical procedure packs is common in these surgeries; however, there is little in the literature demonstrating their time and cost impacts. Understanding the costs and potential benefits of surgical pack procedure use is important for administrators in purchasing decision-making. The objective of this study is to estimate the economic impact of Alcon Custom Pak METHODS: We conducted a study in 2019 among US hospitals and ASCs using an online survey and a surgery timing exercise. Surgical technicians and supply chain managers were surveyed regarding current cataract and retina surgery practices including OR, materials management, and accounting tasks. Surgical technicians timed cataract and retina surgeries, recording activity timestamps and surgical supply use from Alcon Custom Pak and other sources. Using the survey and timing exercise inputs and literature and government sources, we developed a budget impact model (BIM) to quantify hidden costs of time and labor spent across the entire surgery supply life cycle. RESULTS: Representing a geographical mix of 99 facilities, surgical technicians (56 cataract/46 retina) and supply chain managers (23 cataract/24 retina) provided data for their institutions. Technicians timed 290 cataract and 250 retina surgeries. In the BIM, increasing baseline Custom Pak utilization to 100% of surgeries while also sourcing all relevant supplies from Custom Pak results in annual cost savings ranging from $92,273 to$217,675 across procedure type and setting, allowing for between 75 (retina ASC) and 266 (cataract hospital) potential additional procedures per facility/year. CONCLUSION: This study demonstrates that increasing Custom Pak usage can potentially save time, reduce hidden costs, and increase throughput

Cool Multiphase Plasma in Hot Environments

Cool plasmas embedded in a larger, much hotter medium are ubiquitous in different astrophysical systems such as solar & stellar coronae, the CGM, ISM and ICM media. These cross-disciplinary possibilities call for a high-resolution multi-wavelength imaging and spectroscopic solar instrument able to capture the multithermal, dynamic and pervasive nature of the multiphase plasma in the solar corona