Comparison of Safety and Efficacy Between Ab Interno and Ab Externo Approaches to XEN Gel Stent Placement.

Purpose: To compare the safety and efficacy of two different techniques for implantation of the XEN Gel Stent, a minimally invasive surgical device for the treatment of refractory glaucoma.

Methods: A retrospective chart review of eyes that received ab interno or ab externo XEN Gel Stent placement from February 2017 to October 2019 was conducted. A single surgeon (NMR) performed all operations.

The association between corneal hysteresis and surgical outcomes from trabecular meshwork microinvasive glaucoma surgery.

Purpose: To assess whether an association exists between pretreatment corneal hysteresis (CH) and the magnitude of intraocular pressure (IOP) and medication burden reduction following microinvasive glaucoma surgery (MIGS).

Methods: Retrospective chart review of 84 eyes from 57 patients with CH measurements who underwent trabecular meshwork MIGS in a glaucoma practice in New York City with follow-up visits at 3-6 and 9-12 months. MIGS included canaloplasty, goniotomy, microbypass stents, or a combination thereof.

Circumferential Viscodilation Ab Interno Combined with Phacoemulsification for Treatment of Open-Angle Glaucoma: 12-Month Outcomes.

Purpose: To evaluate reduction in intraocular pressure (IOP) and medications for open-angle glaucoma (OAG) patients 12 months post-ab-interno circumferential viscodilation (VISCO360, Sight Sciences, Menlo Park, CA) in conjunction with cataract surgery.

Setting: Surgical center (New York, United States).

Design: Retrospective study of all OAG patients treated with 360-degree ab-interno viscodilation with cataract surgery by a single surgeon (NR) having 12 months of follow-up.

Relationship between optic disc hemorrhage and corneal hysteresis.

Objective: To determine the relationship between optic disc hemorrhage (DH) and corneal hysteresis (CH).

Methods: Consecutive patients with prior or current photographic evidence of unilateral DH who had undergone CH measurement with the Ocular Response Analyzer (ORA; Reichert, Buffalo, NY) were enrolled. Eyes with a history of corneal disease, refractive surgery, or bilateral DH were excluded.

Oxidation of carbon monoxide in basic solution catalyzed by nickel cyano carbonyls under ambient conditions and the prototype of a CO-powered alkaline fuel cell.

CO reduces nickel(2+) cyanides in basic solution to form tetrahedral Ni(0)(CN)(CO)3(-) or Ni(0)(CN)2(CO)2(2-). Both nickel(0) complexes can be oxidized back to nickel(2+) cyanide/hydroxide so that they behave as CO oxidation catalysts in basic solution. A primitive fuel cell was constructed to demonstrate the feasibility of a CO-powered fuel cell.