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penetrating keratoplasty

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https://www.readbyqxmd.com/read/28820150/component-corneal-surgery-an-update
#1
REVIEW
Prafulla K Maharana, Pranita Sahay, Deepali Singhal, Itika Garg, Jeewan S Titiyal, Namrata Sharma
Several decades ago, penetrating keratoplasty was a challenge to corneal surgeons. Constant effort by the corneal surgeon to improve the outcomes as well as utilization of the available resources has led to a revolutionary change in the field of keratoplasty. All these efforts have led to the evolution of techniques that allow a corneal surgeon to disease-specific transplant of individual layers of corneal "so-called component corneal surgery" depending on the layer of cornea affected. This has led to an improvement in corneal graft survival as well as a better utilization of corneal tissues...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28817744/predictors-of-corneal-perforation-or-need-for-therapeutic-keratoplasty-in-severe-fungal-keratitis-a-secondary-analysis-of-the-mycotic-ulcer-treatment-trial-ii
#2
N Venkatesh Prajna, Tiruvengada Krishnan, Revathi Rajaraman, Sushila Patel, Ranjeet Shah, Muthiah Srinivasan, Manoranjan Das, Kathryn J Ray, Catherine E Oldenburg, Stephen D McLeod, Michael E Zegans, Nisha R Acharya, Thomas M Lietman, Jennifer Rose-Nussbaumer
Importance: Identifying patients with infectious keratitis who are at risk of experiencing a poor outcome may be useful to allocate resources toward high- risk patients, particularly in resource-poor settings. Objective: To determine baseline patient and ulcer characteristics that predict a high risk of developing corneal perforation and/or the need to undergo therapeutic penetrating keratoplasty (TPK). Design, Setting, and Participants: This is a secondary analysis of Mycotic Ulcer Treatment Trial II, a multicenter, double-masked, placebo-controlled randomized clinical trial that enrolled 240 patients with smear-positive filamentous fungal corneal ulcers who enrolled between May 2010 and August 2015...
August 17, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28817391/tacrolimus-eye-drops-as-adjunct-therapy-in-severe-corneal-endothelial-rejection-refractory-to-corticosteroids
#3
Reza Ghaffari, Hamed Ghassemi, Mehran Zarei-Ghanavati, Golshan Latifi, Shima Dehghani, Zeeshan Haq, Ali R Djalilian
PURPOSE: To evaluate the safety and efficacy of tacrolimus eye drops as adjunctive therapy in the treatment of severe corneal endothelial rejection after penetrating keratoplasty refractory to corticosteroids. METHODS: In this prospective interventional case series, 11 eyes of 11 patients assessed for severe corneal endothelial rejection, with an inadequate response to topical, local, and systemic corticosteroids, were treated with either 0.01% or 0.05% tacrolimus eye drops 4 times daily...
August 16, 2017: Cornea
https://www.readbyqxmd.com/read/28808911/methicillin-resistant-staphylococcus-aureus-acute-keratitis-after-intracorneal-ring-segment-implantation
#4
Gonzalo García de Oteyza, Andrea Laiseca, Paola Sauvageot, Juan Álvarez de Toledo
INTRODUCTION: The purpose of this study was to report the first case of acute bacterial keratitis produced by methicillin-resistant Staphylococcus aureus after the implantation of two intracorneal ring segments during an uneventful procedure for treating keratoconus in a 13-year-old child. CASE REPORT: A patient with grade III keratoconus underwent an implantation of intracorneal ring segments with no complications during the procedure. Three days later, a whitish corneal infiltrate appeared in between the union of both corneal rings...
August 14, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28808586/quality-of-vision-after-deep-anterior-lamellar-keratoplasty-fluid-dissection-compared-to-penetrating-keratoplasty-for-the-treatment-of-keratoconus
#5
Islam Mahmoud Hamdi, Momen Mahmoud Hamdi
PURPOSE: To compare the visual quality of patients with keratoconus who underwent penetrating keratoplasty (PKP) or deep anterior lamellar keratoplasty (DALK) with fluid dissection. DESIGN: Cross-sectional, observational study. METHODS: Twelve eyes that underwent PKP (PKP group) were compared to 24 eyes that underwent DALK (DALK group) after complete removal of sutures and stability of refraction. Visual, refractive, corneal topographic, corneal aberrometry, and ocular aberrometry parameters were compared for both groups...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28802684/-management-of-post-traumatic-aphakia-and-aniridia-retrospective-study-of-17-patients-undergoing-scleral-sutured-artificial-iris-intraocular-lens-implantation-management-of-aphakia-aniridia-with-scleral-sutured-artificial-iris-intraocular-lenses
#6
A-S Villemont, V Kocaba, H Janin-Manificat, L Abouaf, M Poli, A-S Marty, M Rabilloud, J Fleury, C Burillon
PURPOSE: To evaluate the long-term outcomes of artificial iris intraocular lenses sutured to the sclera for managing traumatic aphakia and aniridia. METHODS: All consecutive cases receiving a Morcher(®) combination implant from June 2008 to February 2016 in Edouard-Herriot Hospital (Lyon, France) were included in this single-center retrospective study. Visual acuity, subjective degree of glare, quality of life and surgical complications were evaluated. RESULTS: Seventeen eyes of 17 patients were included, among which 82% were male...
August 9, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28801092/anterior-segment-optical-coherence-tomography-for-the-diagnosis-of-corneal-dystrophies-according-to-the-ic3d-classification
#7
REVIEW
Sebastian Siebelmann, Paula Scholz, Simon Sonnenschein, Björn Bachmann, Mario Matthaei, Claus Cursiefen, Ludwig M Heindl
Corneal dystrophies are categorized according to the International Committee for Classification of Corneal Dystrophies (IC3D) classification, and their treatment depends on the affected structures and layer of the cornea. Therefore, estimating the depth and extent of the morphological changes due to the specific dystrophy is crucial when deciding between different treatment options. Besides superficial laser treatments and penetrating keratoplasty, minimal invasive lamellar keratoplasties such as Descemet membrane endothelial keratoplasty), deep anterior lamellar keratoplasty, or Descemet stripping automated keratoplasty have become increasingly popular to exchange the specific opaque layers in dystrophic eyes...
August 8, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28777100/scleral-pneumatonometry-in-penetrating-keratoplasty-a-clinical-study
#8
Otavio A Magalhaes, Anthony J Aldave
PURPOSE: To evaluate the reliability between pneumatonometry intraocular pressure (IOP) measurement in different scleral locations and corneal IOP in a penetrating keratoplasty (PK) setting. Our aim is to validate a method that can potentially be used for patients with keratoprostheses. METHODS: This is a prospective observational study of 40 patients who underwent monocular PK by a single surgeon and had no significant anterior segment condition in the contralateral eye...
August 2, 2017: Cornea
https://www.readbyqxmd.com/read/28776159/-postoperative-maximum-dilated-fixed-pupil-and-primary-graft-insufficiency-after-penetrating-keratoplasty
#9
G Schießl, T Hager, B Seitz
Postoperative maximum dilated fixed pupil after penetrating keratoplasty, so-called Urrets-Zavalia syndrome, is rare. Primary insufficiency of the graft can necessitate a repeat keratoplasty. Subsequently, a segmental artificial iris reconstruction might be beneficial.
August 3, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28761380/corneal-deposits-associated-with-topical-tosufloxacin-following-penetrating-keratoplasty-a-case-report
#10
Haruki Katahira, Shigeto Kumakura, Takaaki Hattori, Hiroshi Goto
PURPOSE: To report the adverse event of topical tosufloxacin administered after penetrating keratoplasty in one patient. CASE REPORT: A 60-year-old female was referred to our hospital for treatment of vision loss due to corneal opacification, etiology was unknown. Slit lamp examination showed dense opacification in corneal stroma. Penetrating keratoplasty was performed on her left eye. She was treated with topical applications of 1.5% levofloxacin, 0.5% cefmenoxime, 0...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28758436/-diagnostics-and-treatment-of-infectious-keratitis
#11
Nóra Szentmáry, László Módis, László Imre, Ágnes Füst, Loay Daas, Lenke Laurik, Berthold Seitz, Zoltán Zsolt Nagy
We summarize up-to-date diagnostic and treatment of infectious keratitis using literature data and some clinical examples. In the clinical practice, most commonly bacterial, herpetic, mycotic and acanthamoeba keratitis occur. Beside slitlamp examination, for diagnostic purpose, we analyse corneal sensitivity, perform in vivo confocal microscopy, polymerase-chain-reaction (PCR), in vitro culture and histological examination of the corneal sample. As conservative treatment we use primarily topical moxifloxacin or cephasolin with fortified tobramycin or gentamycin in bacterial, topical antiviral gel (in some cases in combination with systemic antiviral treatment) in part in combination with topical corticosteroids in herpetic, voriconasole or amphotericin-B in mycotic, and topical-triple-therapy (diamidine, biguanid and antibiotics) in acanthamoeba keratitis...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28749898/recurrence-of-granular-corneal-dystrophy-type-1-after-phototherapeutic-keratectomy-lamellar-keratoplasty-and-penetrating-keratoplasty-in-a-single-population
#12
Darrell R Lewis, Marianne O Price, Matthew T Feng, Francis W Price
PURPOSE: To describe the recurrence of granular corneal dystrophy type 1 (GCD1) after penetrating keratoplasty (PKP), anterior lamellar keratoplasty (ALK), deep anterior lamellar keratoplasty (DALK), and phototherapeutic keratectomy (PTK) in a single population. The time required to achieve best-corrected visual acuity (BCVA) after each intervention was also analyzed. METHODS: Retrospective review of all patients with GCD1 from a single center between 1989 and 2016...
July 26, 2017: Cornea
https://www.readbyqxmd.com/read/28743413/corneal-melting-after-cataract-surgery-in-a-patient-with-autoimmune-disease
#13
G García de Oteyza, A Gómez, M de la Paz
CASE REPORT: A 78-year-old woman with rheumatoid arthritis and secondary Sjögren's syndrome presented with corneal melting three days after cataract extraction that required penetrating keratoplasty. By the fourth month, a second corneal transplant was needed due to a new descemetocele associated with her systemic disease. DISCUSSION: The underlying disease, together with the surgical history, was responsible for the complication presented. The correct anamnesis prior to cataract surgery, a refined technique, and a close post-operative follow-up can avoid such a serious complication...
July 22, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28739420/long-term-visual-outcomes-comparing-descemet-stripping-automated-endothelial-keratoplasty-and-penetrating-keratoplasty
#14
Matthias Fuest, Marcus Ang, Hla Myint Htoon, Donald Tan, Jodhbir S Mehta
PURPOSE: To compare 5-year visual acuity and refraction outcome in Descemet stripping automated endothelial keratoplasty (DSAEK) and penetrating keratoplasty (PK) for Fuchs endothelial dystrophy (FED) or bullous keratopathy (BK) in Asian eyes. DESIGN: Prospective interventional case series. METHODS: We analyzed 828 consecutive cases of DSAEK (423) or PK (405) for FED and BK from the Singapore Cornea Transplant Registry performed from 1991 to 2011...
July 21, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28734818/preoperative-aqueous-cytokine-levels-are-associated-with-a-rapid-reduction-in-endothelial-cells-after-penetrating-keratoplasty
#15
Yukari Yagi-Yaguchi, Takefumi Yamaguchi, Kazunari Higa, Terumasa Suzuki, Hiroyuki Yazu, Naohiko Aketa, Yoshiyuki Satake, Kazuo Tsubota, Jun Shimazaki
PURPOSE: To evaluate the influence of preoperative inflammatory cytokine levels in the aqueous humor (AqH) on the endothelial cell density (ECD) after penetrating keratoplasty (PKP). DESIGN: Prospective interventional, consecutive case series. METHODS: This study includes 70 consecutive patients (mean age 73.7 ± 10.6), who underwent PKP (37 eyes) or cataract surgery (controls, 33 eyes). A total of 70 AqH samples were collected at the beginning of each surgery...
July 19, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28730071/effect-of-sorafenib-in-a-murine-high-risk-penetrating-keratoplasty-model
#16
Yang Kyung Cho, Eun Young Shin, Hironori Uehara, Balamurali K Ambati
AIM: To evaluate the effect of sorafenib in murine high risk keratoplasty model. METHODS: Graft survival, corneal neovascularization, and corneal lymphangiogenesis were compared among the sorafenib, dexamethasone, dimethyl sulfoxide (DMSO), and phosphate buffered saline (PBS) groups following subconjunctival injection in mice that underwent high risk penetrating keratoplasty (HRPK). Real-time polymerase chain reaction was performed to quantify the expression of inflammatory cytokines and vascular endothelial growth factor (VEGF)-A, VEGF-C, vascular endothelial growth factor receptor (VEGFR)-2, VEGFR-3...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724824/late-onset-descemet-s-membrane-detachment-20-years-after-penetrating-keratoplasty
#17
Sharon D'Souza, Narpat Solanki, K R Sushma, Priyank Solanki
This paper reports a case of spontaneous Descemet's Membrane (DM ) detachment 20-years after penetrating keratoplasty (PK). The patient presented with acute onset blurred vision in the right eye associated with mild ocular discomfort. There was no prior history of trauma. The patient had undergone PK in the right eye 20 years back. Detailed ophthalmic examination showed best corrected visual acuity of hand movements close to face in the right eye and 20/80 in the left eye. The right eye showed diffuse graft edema but no congestion, epithelial defect, or loss of continuity of graft-host junction to suggest a traumatic etiology...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724813/correlation-between-the-graft-host-junction-of-penetrating-keratoplasty-by-anterior-segment-optical-coherence-tomography-and-the-magnitude-of-postoperative-astigmatism
#18
Ghada Azab Nassar, Shaimaa Abd El Salam Arfeen
PURPOSE: This study aimed to evaluate the alignment pattern of the graft-host junction after penetrating keratoplasty (PK) by anterior segment-optical coherence tomography (AS-OCT) and to correlate this pattern with the magnitude of postoperative astigmatism. METHODS: This retrospective observational study was carried out on forty patients who underwent PK from February 2013 to August 2014. AS-OCT was performed, and the graft-host junctions were classified into well-apposed junction, malapposed junction, and equally apposed junction...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724812/use-of-glycerol-preserved-corneas-for-corneal-transplants
#19
Neeti Gupta, Prerna Upadhyay
PURPOSE: This study was carried out to see the results of glycerol-preserved cornea (GPC) in emergency situation when fresh corneal tissue was not available. The aim was to study the outcome of corneal transplantation using GPC. METHODS: This was a retrospective study. The medical records of all the patients were reviewed, who underwent keratoplasty using "GPC" during the period from October 2011 to December 2015. The indication of keratoplasty, duration of preservation of the GPC, and its outcome were analyzed...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28700252/modified-allogenic-simple-limbal-epithelial-transplantation-followed-by-keratoplasty-as-treatment-for-total-limbal-stem-cell-deficiency
#20
Alfonso Vasquez-Perez, Mayank A Nanavaty
PURPOSE: To describe a modified allogenic simple limbal epithelial transplant (SLET) technique with large donor tissue explants followed by keratoplasty. METHODS: A 69-year-old with conjunctival melanoma on her left eye developed total limbal stem cell deficiency (LSCD) after multiple cycles of topical mitomycin. She also had herpes stromal keratitis while on treatment with mitomycin. She underwent modified allogenic SLET with large donor limbal tissue explants glued on the cornea directly and the amniotic membrane placed over the limbal explants...
July 12, 2017: Ocular Immunology and Inflammation
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