Sampling Aqueous Humor: Anterior Segment Anatomy, Anesthetic and Surgical Technique, and Rates of Yield

2012 ◽  
Vol 47 (4) ◽  
pp. 214-219 ◽  
Author(s):  
Thomas Bertelmann ◽  
Nadia Kičová ◽  
Laura Kohlberger ◽  
Marta Spychalska ◽  
Stefan Strodthoff ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Aqueous Humor ◽  
Anterior Segment

A New Surgical Technique for Anterior Segment Ectasia: Tectonic Lamellar Sclerokeratoplasty

2006 ◽  
Vol 37 (5) ◽  
pp. 434-436 ◽  
Author(s):  
Wisam A. Shihadeh ◽  
Saloman Esquenazi ◽  
Almamoun Abderkader ◽  
Herbert E. Kaufman
Keyword(s):  
Surgical Technique ◽  
Anterior Segment ◽  
New Surgical Technique

Surgical Closure of Tracheoesophageal Puncture Without a Flap Interposition

2020 ◽  
Vol 163 (3) ◽  
pp. 618-620
Author(s):  
João Fonseca Neves ◽  
Ana Rita Nobre ◽  
Edite Portugal ◽  
Francisco Branquinho
Keyword(s):  
Surgical Technique ◽  
Total Laryngectomy ◽  
Tracheoesophageal Fistula ◽  
Skin Flap ◽  
Anterior Segment ◽  
Continuous Suture ◽  
Vocal Rehabilitation ◽  
Surgical Closure ◽  
Tracheoesophageal Puncture ◽  
Suture Closure

Tracheoesophageal puncture for voice prosthesis placement is often used in vocal rehabilitation of patients undergoing total laryngectomy. Although its closure can occur spontaneously, some patients require a surgical procedure. We propose a surgical technique, without flap interposition, that begins with careful separation of the esophagus and trachea and identification of the site of tracheoesophageal fistula. After continuous suture closure of the esophagus, the anterior segment of the first tracheal rings is vertically incised to facilitate tracheal closure in a suture without tension. Finally, a small pectoral skin flap is made and mobilized to suture to the free edges of the sectioned tracheal rings, thus reducing the risk of tracheal stenosis. Four patients underwent this procedure with uneventful postoperative evolution and permanent closure of the fistula.

scholarly journals Surgical Management of Pseudophakic Malignant Glaucoma via Anterior Segment-Peripheral Iridectomy Capsulo-Hyaloidectomy and Anterior Vitrectomy

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Isıl Basgil Pasaoglu ◽  
Cigdem Altan ◽  
Sukru Bayraktar ◽  
Banu Satana ◽  
Berna Basarır
Keyword(s):  
Surgical Technique ◽  
Surgical Management ◽  
Conventional Treatment ◽  
Anterior Segment ◽  
Corneal Incision ◽  
Anterior Vitrectomy ◽  
Clear Corneal Incision ◽  
Malignant Glaucoma ◽  
Peripheral Iridectomy

Purpose. To describe our surgical technique in the management of pseudophakic malignant glaucoma refractory to conventional treatment.Methods. Two pseudophakic eyes with malignant glaucoma underwent peripheral iridectomy, lens capsulectomy, hyaloidectomy, and anterior vitrectomy through a clear corneal incision by using a vitreous cutter.Results. Prompt resolution of malignant glaucoma was achieved in both cases and no recurrence was observed during postoperative followup of five months.Conclusions. An anterior segment surgeon can treat pseudophakic malignant glaucoma successfully by using a vitreous cutter inserted through a corneal incision and performing peripheral iridectomy, capsulo-hyaloidectomy, and anterior vitrectomy.

scholarly journals Penetration of Topically Administered 0.5-Percent Caspofungin Eye Drops into Human Aqueous Humor

2011 ◽  
Vol 55 (4) ◽  
pp. 1761-1763 ◽  
Author(s):  
Chin Fen Neoh ◽  
Lok Leung ◽  
Anant Misra ◽  
Rasik B. Vajpayee ◽  
Geoffrey E. Davies ◽  
...  
Keyword(s):  
Aqueous Humor ◽  
Anterior Segment ◽  
Eye Drops ◽  
Corneal Abrasion ◽  
Eye Surgery

ABSTRACTTen participants attending elective anterior segment eye surgery received 0.5% caspofungin eye drops either 1 drop hourly for 4 h or 1 drop an hour before surgery. The eye drops were generally well tolerated. In the absence of inflammation or corneal abrasion, topical caspofungin does not achieve clinically relevant concentrations.

scholarly journals STRABO care less traumatic strabismus surgery technique in the rehabilitation of patients with strabismus

2021 ◽  
pp. 38-44
Author(s):  
I.E. Aznauryan ◽  
◽  
V.O. Balasanyan ◽  
A.A. Shpak ◽  
M.I. Uzuev ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Surgical Technique ◽  
Postoperative Period ◽  
Suture Material ◽  
Anterior Segment ◽  
Rectus Muscle ◽  
Strabismus Surgery ◽  
Control Group ◽  
Palpebral Fissure ◽  
Conjunctival Flap

Purpose. Comparative evaluation of patients' rehabilitation using less traumatic STRABO care technique and traditional methods of strabismus surgery. Material and methods. Sixty-two patients with esotropia were included in the study. All participants underwent medial rectus muscle recession and lateral rectus muscle plication. Patients were divided into two groups. In the main group (38 patients), the surgery was performed with less traumatic technique. Radio-wave knife was used for dissecting the connective tissues. Vicryl 7-0 was used as suture material. Traditional surgical technique was used in control group (24 patients). Scissors were used as a cutting tool and Vicryl 6-0 as a suture material. In the postoperative period conjunctival hyperemia, and width of the palpebral fissure were assessed after the surgery. Conjunctival flap edema (thickness) was measured one day after surgery by the anterior segment optical coherence tomography (AS-OCT). Results. The 1st day after surgery the median thickness of the conjunctival flap above the recession site according to AS-OCT was on average 1.5 times thinner in the main group than in the control group: 405 (351–555) µm vs. 618 (513–732) µm; p<0.001. During the entire observation period in the eyes operated with less traumatic technique, hyperemia was less expressed and palpebral fissure was wider as compared to the control group, where the standard surgical technique was used. Conclusion. Less traumatic STRABO care surgical technique allows to reduce the inflammatory response of tissues in response to surgical intervention and to facilitate the course of the early postoperative period. Key words: strabismus surgery, low-traumatic technique, radio-wave knife, oculomotor muscles, rehabilitation, STRABO care, anterior segment optical coherence tomography

scholarly journals Corneal Hydrops in Keratoconus

2015 ◽  
Vol 4 (2) ◽  
pp. 52-55
Author(s):  
Namrata Sharma ◽  
Ritu Nagpal ◽  
Prafulla K Maharana
Keyword(s):  
Optical Coherence Tomography ◽  
Surgical Technique ◽  
Confocal Microscopy ◽  
Gas Injection ◽  
Anterior Segment ◽  
Corneal Edema ◽  
Corneal Neovascularization ◽  
Visual Rehabilitation ◽  
Corneal Hydrops ◽  
Difficult Situations

ABSTRACT Purpose The purpose of this review is to outline the etiology, clinical features, and management of acute corneal hydrops (CH) in cases of keratoconus (KC). Recent findings The advent of newer investigative modalities like ultra biomicroscopy, anterior segment optical coherence tomography and confocal microscopy has contributed toward the diagnosis, treatment planning and following the course of therapy in cases of acute hydrops. Summary Corneal hydrops is an acute complication of keratoconus which in most instances resolves spontaneously. However, prolonged corneal edema can lead to complications, such as corneal neovascularization which can jeopardise a future corneal graft. Hence, timely intervention is required in most cases to prevent such complications as well as for early visual rehabilitation. Intracameral gas injection is the most commonly performed surgical procedure for hydrops. Modifications in surgical technique can help to tackle difficult situations. How to cite this article Maharana PK, Nagpal R, Sharma N. Corneal Hydrops in Keratoconus. Int J Kerat Ect Cor Dis 2015;4(2):52-55.

scholarly journals Cell atlas of aqueous humor outflow pathways in eyes of humans and four model species provides insight into glaucoma pathogenesis

2020 ◽  
Vol 117 (19) ◽  
pp. 10339-10349 ◽  
Author(s):  
Tavé van Zyl ◽  
Wenjun Yan ◽  
Alexi McAdams ◽  
Yi-Rong Peng ◽  
Karthik Shekhar ◽  
...  
Keyword(s):  
Single Cell ◽  
Aqueous Humor ◽  
Ganglion Cells ◽  
Anterior Segment ◽  
Experimental Studies ◽  
Cynomolgus Macaque ◽  
Cell Types ◽  
Model Systems ◽  
Retinal Ganglion ◽  
Aqueous Humor Outflow

Increased intraocular pressure (IOP) represents a major risk factor for glaucoma, a prevalent eye disease characterized by death of retinal ganglion cells; lowering IOP is the only proven treatment strategy to delay disease progression. The main determinant of IOP is the equilibrium between production and drainage of aqueous humor, with compromised drainage generally viewed as the primary contributor to dangerous IOP elevations. Drainage occurs through two pathways in the anterior segment of the eye called conventional and uveoscleral. To gain insights into the cell types that comprise these pathways, we used high-throughput single-cell RNA sequencing (scRNAseq). From ∼24,000 single-cell transcriptomes, we identified 19 cell types with molecular markers for each and used histological methods to localize each type. We then performed similar analyses on four organisms used for experimental studies of IOP dynamics and glaucoma: cynomolgus macaque (Macaca fascicularis), rhesus macaque (Macaca mulatta), pig (Sus scrofa), and mouse (Mus musculus). Many human cell types had counterparts in these models, but differences in cell types and gene expression were evident. Finally, we identified the cell types that express genes implicated in glaucoma in all five species. Together, our results provide foundations for investigating the pathogenesis of glaucoma and for using model systems to assess mechanisms and potential interventions.

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