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https://www.readbyqxmd.com/read/29135710/adjustment-of-intrastromal-corneal-ring-segments-after-unsuccessful-implantation-in-keratoconic-eyes
#1
Tiago Monteiro, José Ferreira Mendes, Fernando Faria-Correia, Nuno Franqueira, David Madrid-Costa, José F Alfonso
PURPOSE: To evaluate visual, refractive, and corneal topography outcomes in eyes with keratoconus that have undergone exchange/adjustment surgery with a new intrastromal corneal ring segment (ICRS) combination after unsuccessful visual and/or refractive outcomes after primary ICRS surgery. METHODS: A retrospective nonrandomized case series was conducted including consecutive eyes of patients with keratoconus that underwent ICRS adjustment after an unsuccessful visual outcome...
November 13, 2017: Cornea
https://www.readbyqxmd.com/read/29133630/non-contact-lens-related-acanthamoeba-keratitis
#2
REVIEW
Prashant Garg, Paavan Kalra, Joveeta Joseph
The purpose of the study is to describe epidemiology, clinical features, diagnosis, and treatment of Acanthamoeba keratitis (AK) with special focus on the disease in nonusers of contact lenses (CLs). This study was a perspective based on authors' experience and review of published literature. AK accounts for 2% of microbiology-proven cases of keratitis. Trauma and exposure to contaminated water are the main predisposing factors for the disease. Association with CLs is seen only in small fraction of cases. Contrary to classical description experience in India suggests that out of proportion pain, ring infiltrate, and radial keratoneuritis are seen in less than a third of cases...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29120710/femtosecond-laser-implantation-of%C3%A2-a%C3%A2-340-degree-intrastromal-corneal-ring%C3%A2-segment-in-keratoconus-short-term%C3%A2-outcomes
#3
Mohammad Mehdi Sadoughi, Bahram Einollahi, Amir Reza Veisi, Mohammad Zare, Mohammad Reza Sedaghat, Danial Roshandel, Neda Einollahi, Javad Rezaei
PURPOSE: To evaluate the short-term outcomes of femtosecond laser-assisted implantation of a 340-degree intracorneal ring (ICR) (Keraring) in patients with keratoconus. SETTING: Four centers in Iran. DESIGN: Prospective case series. METHODS: All cases had implantation of the 340-degree ICR after tunnel creation with a femtosecond laser. The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, sphere, cylinder, manifest refraction spherical equivalent (MRSE), mean keratometry (K), steep K, and flat K were evaluated preoperatively and 1, 3, and 6 months postoperatively...
October 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29117421/erratum-for-intracorneal-ring-segments-implantation-for-corneal-ectasia
#4
(no author information available yet)
No abstract text is available yet for this article.
November 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29111836/long-term-changes-in-backscattered-light-measurements-in-keratoconus-corneas-treated-with-collagen-cross-linking
#5
Gabor Nemeth, Jasmin Hassan, Laszlo Modis, Ziad Hassan
PURPOSE: Our aim was to compare densitometry data between keratoconus and normal corneas and to assess the long-term changes in corneal backscattered light values after corneal collagen cross-linking (CXL) treatment. MATERIAL AND METHODS: Retrospective analysis was performed on 26 eyes of normal patients (age: 32.71 ± 12.68 years) and 39 eyes of keratoconus patients (28.93 ± 7.59 years) using the Pentacam HR corneal densitometry module before CXL and during the postoperative period, which lasted a mean of 2...
November 7, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29074305/scleral-lens-after-intracorneal-ring-segments-in-patients-with-keratoconus
#6
Varsha M Rathi, Preeji S Mandathara, Srikanth Dumpati, Virender S Sangwan
BACKGROUND: To report the use of scleral lens (ScCL) to improve vision in patients having keratoconus who had intracorneal ring segment (ICRS) surgery. METHODS: Two eyes of two keratoconus patients fitted with ScCL (PROSE - prosthetic replacement of the ocular surface ecosystem, USA) after having undergone ICRS surgery are reported as noncomparative interventional case series. The ICRS implanted were INTACs and kerarings. Indications, visual acuity with ScCL, complications and follow-up are reported...
October 24, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29062770/dependence-of-dynamic-contour-and-goldmann-applanation-tonometries-on-peripheral-corneal-thickness
#7
Federico Saenz-Frances, Claudia Sanz-Pozo, Lara Borrego-Sanz, Luis Jañez, Laura Morales-Fernandez, Jose Maria Martinez-de-la-Casa, Julian Garcia-Sanchez, Julian Garcia-Feijoo, Enrique Santos-Bueso
AIM: To determine the effects of peripheral corneal thickness (PCT) on dynamic contour tonometry(DCT) and Goldmann applanation tonometry (GAT). METHODS: A cross-sectional study. We created a software which calculates the corneal contour (CC) as a function of the radius from the corneal apex to each pixel of the contour. The software generates a central circumference with a radius of 1 mm and the remainder of the cornea is segmented in 5 rings concentric with corneal apex being its diameter not constant around the corneal circumference as a consequence of the irregular CC but keeping constant the diameter of each ring in each direction of the contour...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29032001/efficacy-of-self-retained-cryopreserved-amniotic-membrane-for-treatment-of-neuropathic-corneal-pain
#8
Melina I Morkin, Pedram Hamrah
PURPOSE: Treatment of neuropathic corneal pain (NCP) remains intricate, and involves a long-term combined multistep approach. The self-retained cryopreserved amniotic membrane (PROKERA(®), Bio-Tissue, Miami,FL) has been utilized for multiple ocular surface disorders. We evaluate the efficacy, safety, and tolerability of ProKera(®) Slim [PKS] and ProKera(®) Clear [PKC] in the treatment of NCP. METHODS: Retrospective case series of 9 patients who received PKS/PKC for the acute treatment of NCP...
October 12, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28994816/the-aortic-ring-co-culture-assay-a-convenient-tool-to-assess-the-angiogenic-potential-of-mesenchymal-stromal-cells-in-vitro
#9
Farwah Iqbal, Yarden S Gratch, Peter Szaraz, Clifford L Librach
Angiogenesis is a complex, highly regulated process responsible for providing and maintaining adequate tissue perfusion. Insufficient vasculature maintenance and pathological malformations can result in severe ischemic diseases, while overly abundant vascular development is associated with cancer and inflammatory disorders. A promising form of pro-angiogenic therapy is the use of angiogenic cell sources, which can provide regulatory factors as well as physical support for newly developing vasculature. Mesenchymal Stromal Cells (MSCs) are extensively investigated candidates for vascular regeneration due to their paracrine effects and their ability to detect and home to ischemic or inflamed tissues...
September 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28993355/bilateral-fungal-keratitis-with-ring-infiltrates-a-rare-scenario
#10
Manthan Hasmukhbhai Chaniyara, Amar Pujari, Jayanand Urkude, Namrata Sharma
A 12-year-old boy presented to the emergency department with chief complaints of pain, redness, discharge and diminution of vision in both eyes over the previous 20 days. There was no history of preceding trauma, contact lens use, any eye drop usage or ocular surgery. Systemic history was not significant. Presenting uncorrected visual acuity in his right eye was counting fingers at 1 m and 20/200 in the left eye, with accurate projection of rays in both eyes. Slit lamp biomicroscopy showed the presence of bilateral diffuse conjunctival congestion, corneal ring infiltrates and epithelial defect with corneal oedema...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28993070/the-effect-of-soft-contact-lens-thickness-in-visual-function-after-intracorneal-ring-segments-surgery
#11
G Carracedo, J Canales, P Gonzalez, A Rechionni, C Carpena-Torres, J Carballo-Álvarez
OBJECTIVE: To study the influence of soft contact lens (SCL) central thickness and material in keratoconus on visual function after intracorneal ring segment (ICRS) surgery. METHODS: A pilot, experimental, prospective, cross-sectional and double-blind study was performed. Fourteen keratoconus patients with age range of 34.75±9.22years (7 males and 7 females) with ICRS implanted were involved in the study. Two different SCL materials [Hioxifilcon A (G-5X/p-GMA/HEMA) and Lucifilcon A (silicone-hydrogel)] with four different central thicknesses (0...
October 6, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28991609/optimized-keratometry-and-total-corneal-astigmatism-for-toric-intraocular-lens-calculation
#12
Giacomo Savini, Kristian Næser, Domenico Schiano-Lomoriello, Pietro Ducoli
PURPOSE: To compare keratometric astigmatism (KA) and different modalities of measuring total corneal astigmatism (TCA) for toric intraocular lens (IOL) calculation and optimize corneal measurements to eliminate the residual refractive astigmatism. SETTING: G.B. Bietti Foundation IRCCS, Rome, Italy. DESIGN: Prospective case series. METHODS: Patients who had a toric IOL were enrolled. Preoperatively, a Scheimpflug camera (Pentacam HR) was used to measure TCA through ray tracing...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991336/four-stage-procedure-for-keratoconus-icrs-implantation-corneal-cross-linking-toric-phakic-intraocular-lens-implantation-and-topography-guided-photorefractive-keratectomy
#13
Efekan Coskunseven, Daya Papalkar Sharma, Michael A Grentzelos, Onurcan Sahin, George D Kymionis, Ioannis Pallikaris
PURPOSE: To evaluate a four-stage combined treatment for keratoconus including intrastromal corneal ring segment (ICRS) implantation followed by corneal cross-linking (CXL), toric phakic intraocular lens (IOL) implantation, and topography-guided photorefractive keratectomy (TG-PRK). METHODS: In this retrospective interventional case series, 11 eyes of 7 patients with progressive keratoconus were treated with a four-stage procedure including the following: Keraring ICRS (Mediphacos Ltda, Belo Horizonte, Brazil) implantation followed by CXL, phakic IOL implantation, and TG-PRK (minimum 6 months between each stage)...
October 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28991335/customized-corneal-cross-linking-using-different-uva-beam-profiles
#14
Rohit Shetty, Natasha Pahuja, Thimmarayappa Roshan, Rashmi Deshmukh, Mathew Francis, Arkasubhra Ghosh, Abhijit Sinha Roy
PURPOSE: To evaluate the performance of different customized corneal cross-linking (CXL) methods. METHODS: This was a single-center interventional, prospective, longitudinal case series. Four different customized CXL methods were evaluated in keratoconic eyes: (1) uniform (uniform intensity ultraviolet-A [UVA] beam [9 mW/cm(2)] for 10 minutes) (n = 12 eyes); (2) sector axial map (sector-based UVA irradiation) (n = 12 eyes); (3) ring axial map (concentric rings of UVA beam intensity centered at the steepest curvature of the anterior axial map) (n = 12 eyes); and ring tangential map (same as the ring axial map but centered at the steepest curvature of the anterior tangential map) (n = 14 eyes)...
October 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28985802/creation-and-validation-of-a-simulator-for-corneal-rust-ring-removal
#15
Zale Mednick, Reza Tabanfar, Ashley Alexander, Sarah Simpson, Stephanie Baxter
OBJECTIVE: To create and validate a simulation model for corneal rust ring removal. METHODS: Rust rings were created on cadaveric eyes with the use of small particles of metal. The eyes were mounted on suction plates at slit lamps and the trainees practiced rust ring removal. An inexperienced cohort of medical students and first year ophthalmology residents (n=11), and an experienced cohort of senior residents and faculty (n=11) removed the rust rings from the eyes with the use of a burr...
October 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28961565/cataract-surgery-in-eyes-with-keratoconus-a-review-of-the-current-literature
#16
Majid Moshirfar, Brian D Walker, Orry C Birdsong
PURPOSE OF REVIEW: There are an increasing number of keratoconic eyes, requiring cataract surgery. We review the preoperative planning, intraoperative options, and postoperative management that aid in successful outcomes. RECENT FINDINGS: Management of keratoconic eyes requiring cataract surgery requires a multifaceted approach. Preoperatively, corneal crosslinking and intrastromal corneal ring segments can be considered in order to provide stable keratometry values for intraocular lens (IOL) calculations...
September 28, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28957978/evaluation-of-the-reliability-and-repeatability-of-scheimpflug-system-measurement-in-keratoconus
#17
Beatriz de Luis Eguileor, Julene Escudero Argaluza, Jose Ignacio Pijoán Zubizarreta, Alaitz Santamaria Carro, Jaime Etxebarria Ecenarro
PURPOSE: To assess the reliability and repeatability of the parameters obtained using a Scheimpflug system (Pentacam HR-high resolution) for monitoring progression in eyes with keratoconus. METHODS: A prospective study was conducted based on measurements taken with the Pentacam HR in 82 eyes with keratoconus. We calculated the intraclass correlation coefficient (ICC) and the repeatability limit for topographic and aberrometric parameters. RESULTS: All the parameters analyzed had excellent ICCs, above 0...
September 26, 2017: Cornea
https://www.readbyqxmd.com/read/28951784/intrastromal-corneal-ring-segments-for-astigmatism-correction-after-deep-anterior-lamellar-keratoplasty
#18
Júlio C D Arantes, Sandro Coscarelli, Paulo Ferrara, Luana P N Araújo, Marcos Ávila, Leonardo Torquetti
Background. To evaluate the change in corneal astigmatism after intrastromal corneal ring segment (ICRS) implantation in keratoconus patients with previous deep anterior lamellar keratoplasty (DALK). Design was a longitudinal, retrospective, interventional study. The study included 25 eyes of 24 patients with keratoconus who had DALK performed at least two years prior to ICRS implantation. All patients had a clear corneal graft with up to 8.00 D of corneal astigmatism and intolerance to contact lenses. The studied parameters were age, sex, corrected distance visual acuity (CDVA), maximum keratometry (K1), minimum keratometry (K2), spherical equivalent, and astigmatism...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28948045/long-term-follow-up-of-intrastromal-corneal-ring-segments-in-paracentral-keratoconus-with-coincident-corneal-keratometric-comatic-and-refractive-axes-stability-of-the-procedure
#19
Luis Fernández-Vega Cueto, Carlos Lisa, David Madrid-Costa, Jesús Merayo-Lloves, José F Alfonso
PURPOSE: To assess the long-term outcomes of implanting intrastromal corneal ring segments (ICRS) in paracentral keratoconic eyes. METHODS: 58 eyes with paracentral keratoconus with coincident refractive, keratometric, and comatic axes were evaluated. Uncorrected (UDVA) and corrected (CDVA) distance visual acuity and refractive errors were recorded before and at all follow-up visits. The postoperative follow-up was 5 years. Patients were divided into two groups: group I (30 years old or younger) and group II (more than 30 years old)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28945650/ring-keratitis-from-topical-anesthetic-abuse-after-laser-epithelial-keratomileusis
#20
Burak Mergen, Akif Ozdamar, Ahmet Murat Sarici
A 28-year-old man underwent laser epithelial keratomileusis for the correction of myopia in both eyes. The patient subsequently had delayed corneal epithelial healing in both eyes and ring infiltrate in the left eye (LE). Corneal scrapings were obtained from the ocular surface and subjected to microscopic examination and culture. On identifying and preventing the use of topical proparacaine, the corneal epithelium healed in both eyes after the use of eye pressure patches. The ring infiltrate resolved in the patient's LE, leaving minor opacity at the inferior cornea...
September 21, 2017: Eye & Contact Lens
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