On the Dangers of Tropical Spiders as a Pet: A Review of Ocular Symptoms Caused by Tarantula Hairs

2021 ◽  
Author(s):  
Maarten B. Jalink ◽  
Robert P. L. Wisse
Keyword(s):  
Literature Review ◽  
Inflammatory Reaction ◽  
Anterior Uveitis ◽  
Posterior Segment ◽  
Ocular Symptoms ◽  
Pubmed Database ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Urticating Hairs

Tarantulas are large spiders that can defend themselves by shedding urticating hairs (setae). In this paper, we aim to discuss the ocular conditions caused by these setae through a literature review. In total, 25 cases were identified in the PubMed database. Tarantula setae have a barbed structure that enables migration through the globe. They give rise to a spectrum of complaints, causing a granulomatous inflammatory reaction in the compartment they settle. Superficial corneal hairs cause a mild keratitis, while hairs that penetrate Descemet’s membrane can induce an anterior uveitis. Both can be treated with local steroids; when possible, hairs should be debrided. Setae that migrate into the posterior segment can cause a focal vitritis that can be more difficult to treat, sometimes requiring vitrectomy.

Descemet's membrane detachment in horses; case series and literature review

2014 ◽  
Vol 18 (5) ◽  
pp. 357-363 ◽  
Author(s):  
Màrian Matas Riera ◽  
David Donaldson ◽  
Simon Lawrence Priestnall
Keyword(s):  
Literature Review ◽  
Case Series ◽  
Descemet’S Membrane Detachment ◽  
Descemet's Membrane ◽  
Descemet’S Membrane

Acquired Autosensitivity to Degenerating Descemet's Membrane in a Case by Anterior Uveitis in the Other Eye

1971 ◽  
Vol 72 (4) ◽  
pp. 782-786 ◽  
Author(s):  
J. Reimer Wolter ◽  
Frank D. Johnson ◽  
Roger F. Meyer ◽  
John A. Watters
Keyword(s):  
Anterior Uveitis ◽  
The Other ◽  
Descemet's Membrane ◽  
Descemet’S Membrane

scholarly journals Technology of phacoemulsification in extensive zonular defects of zinn ligament fibers

2013 ◽  
Vol 94 (4) ◽  
pp. 580-586
Author(s):  
D I Ivanov ◽  
D B Bardasov
Keyword(s):  
Visual Acuity ◽  
Intraocular Pressure ◽  
Ocular Hypertension ◽  
Inflammatory Reaction ◽  
Corneal Astigmatism ◽  
Capsular Tension Ring ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Induced Astigmatism

Aim. To describe the technique and to assess the results of phacoemulsification in eyes with extensive zonular defects of Zinn ligament fibers. Methods. Phacoemulsification was performed through a 2.2- mm corneal tunnel incision on adhesive viscoelastic bed. The lens was stabilized with a capsular tension ring. The operation was finished with intraocular implantation and its suturing to the iris. The study included 36 patients [42 eyes, 23 males (63.9%), 13 females (36.1%)] in whom phacoemulsification has been performed. Visual acuity before surgery ranged from 0.01 to 0.7 (mean 0.2±0.18). Intraocular pressure ranged from 15 to 25 mm Hg (mean 19.2±4.5 mm Hg). Corneal astigmatism value before surgery ranged from 0 to 2.25 D (mean 0.87±0.63 D). Results. Postoperatively the following complications were observed: an inflammatory reaction in 3 eyes (7.1%), inflammation of Descemet’s membrane in 3 (7.1%) cases, ocular hypertension in 9 (21.4%) eyes. All the complications were drug treated within 3-5 days. On the second day mean visual acuity was assessed as 0.56±0.12,1 month after surgery - 0.70±0.16,6 months after surgery - 0.75±0.21, and 1 year after surgery - 0.74±0.19. Corneal induced astigmatism 1 year after the surgery ranged from 0.0 to 1.5 D (mean 0.39±0.16 D). Conclusion. The presented technology of phacoemulsification is relatively safe, effective and provides a possibility to rehabilitate patients with cataract combined with extensive zonular defects of Zinn ligament fibers in minimal terms.

Cleavage plane after liquid‐bubble preparation of Descemet’s membrane

2020 ◽  
Author(s):  
Annekatrin Rickmann ◽  
Silke Wahl ◽  
Alisa Katsen‐Globa ◽  
André Schulz ◽  
Norbert Pütz ◽  
...  
Keyword(s):  
Cleavage Plane ◽  
Descemet's Membrane ◽  
Liquid Bubble ◽  
Descemet’S Membrane

scholarly journals Corneal pachymetry by AS-OCT after Descemet’s membrane endothelial keratoplasty

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Friso G. Heslinga ◽  
Ruben T. Lucassen ◽  
Myrthe A. van den Berg ◽  
Luuk van der Hoek ◽  
Josien P. W. Pluim ◽  
...  
Keyword(s):  
Deep Learning ◽  
Endothelial Function ◽  
Corneal Thickness ◽  
Anterior Segment ◽  
Anatomical Landmarks ◽  
Endothelial Keratoplasty ◽  
Descemet’S Membrane Endothelial Keratoplasty ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Thickness Measurements

AbstractCorneal thickness (pachymetry) maps can be used to monitor restoration of corneal endothelial function, for example after Descemet’s membrane endothelial keratoplasty (DMEK). Automated delineation of the corneal interfaces in anterior segment optical coherence tomography (AS-OCT) can be challenging for corneas that are irregularly shaped due to pathology, or as a consequence of surgery, leading to incorrect thickness measurements. In this research, deep learning is used to automatically delineate the corneal interfaces and measure corneal thickness with high accuracy in post-DMEK AS-OCT B-scans. Three different deep learning strategies were developed based on 960 B-scans from 50 patients. On an independent test set of 320 B-scans, corneal thickness could be measured with an error of 13.98 to 15.50 μm for the central 9 mm range, which is less than 3% of the average corneal thickness. The accurate thickness measurements were used to construct detailed pachymetry maps. Moreover, follow-up scans could be registered based on anatomical landmarks to obtain differential pachymetry maps. These maps may enable a more comprehensive understanding of the restoration of the endothelial function after DMEK, where thickness often varies throughout different regions of the cornea, and subsequently contribute to a standardized postoperative regime.

Healing of Endothelium and Descemet's Membrane of Rabbit Cornea*

1958 ◽  
Vol 46 (1) ◽  
pp. 62-67 ◽  
Author(s):  
P.L. Morton ◽  
H.L. Ormsby ◽  
P.K. Basu
Keyword(s):  
Rabbit Cornea ◽  
Descemet's Membrane ◽  
Descemet’S Membrane

scholarly journals Stigma Experienced by Parkinson’s Disease Patients: A Descriptive Review of Qualitative Studies

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Marina Maffoni ◽  
Anna Giardini ◽  
Antonia Pierobon ◽  
Davide Ferrazzoli ◽  
Giuseppe Frazzitta
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Literature Review ◽  
Subjective Experience ◽  
Negative Impact ◽  
Social Stigma ◽  
Subjective Symptom ◽  
Point Of View ◽  
Pubmed Database ◽  
Related Quality

Parkinson’s disease (PD) is a neurodegenerative disease characterized by motor and nonmotor symptoms. Both of them imply a negative impact on Health-Related Quality of Life. A significant one is the stigma experienced by the parkinsonian patients and their caregivers. Moreover, stigma may affect everyday life and patient’s subjective and relational perception and it may lead to frustration and isolation. Aim of the present work is to qualitatively describe the stigma of PD patients stemming from literature review, in order to catch the subjective experience and the meaning of the stigma construct. Literature review was performed on PubMed database and Google Scholar (keywords: Parkinson Disease, qualitative, stigma, social problem, isolation, discrimination) and was restricted to qualitative data: 14 articles were identified to be suitable to the aim of the present overview. Results are divided into four core constructs: stigma arising from symptoms, stigma linked to relational and communication problems, social stigma arising from sharing perceptions, and caregiver’s stigma. The principal relations to these constructs are deeply analyzed and described subjectively through patients’ and caregiver’s point of view. The qualitative research may allow a better understanding of a subjective symptom such as stigma in parkinsonian patients from an intercultural and a social point of view.

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