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keratoplasty astigmatism

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https://www.readbyqxmd.com/read/29787490/clinical-performance-of-a-new-bitangential-mini-scleral-lens
#1
Henny M Otten, Bart J J J van der Linden, Esther-Simone Visser
SIGNIFICANCE: New bitangential mini-scleral lens designs provide a highly precise fit, follow the scleral shape, are comfortable to wear, and can correct residual astigmatism. This new scleral lens design complements the arsenal of medical contact lenses available to eye care practitioners. PURPOSE: The aim of this study was to evaluate the subjective and objective performance of a new mini-scleral lens design with a bitangential periphery. METHODS: In this observational study, data were collected for up to 15 months (median, 84 days; interquartile range, 76 days) from the left eyes of 133 patients fitted with this newly designed lens...
May 21, 2018: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/29681179/-femtosecond-laser-assisted-keratoplasty
#2
László Módis, Eszter Szalai, Zsuzsanna Flaskó, Bence Kolozsvári, András Berta
INTRODUCTION AND AIM: To present our results on femtosecond laser-assisted penetrating keratoplasty. PATIENTS AND METHOD: Twenty-five eyes of 25 patients underwent surgery with the following indications: pseudophakic bullous keratopathy (n = 10), keratoconus (n = 4), corneal dystrophy (n = 5), corneal scar (n = 4), band keratopathy (n = 2). Trephination of both the donor and recipient corneas were performed with VisuMax femtosecond laser device (Carl Zeiss Meditec AG, Jena, Germany)...
April 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29669367/12-year-outcomes-of-microkeratome-assisted-anterior-lamellar-therapeutic-keratoplasty-altk-for-disorders-of-the-anterior-part-of-the-corneal-stroma-a-comparative-review-of-adult-and-children
#3
Ivo Guber, Ciara Bergin, Philippe Othenin-Girard, Francis Munier, François Majo
PURPOSE: To report the visual outcomes and complications of automated anterior lamellar therapeutic keratoplasty (ALTK) in adults and children, and to examine these outcomes as a function of age and etiology. METHODS: A consecutive series of cases undergoing automated ALTK procedures performed at the Jules-Gonin Eye Hospital Lausanne, Switzerland, between June 2003 and January 2015. Only patients with at least 3 months of follow-up were included. RESULTS: There were 53 eyes (24 right) of 51 patients (17 female, 16 juvenile), with a mean age of 34...
April 2018: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29657982/epithelial-ingrowth-following-laser-in-situ-keratomileusis-lasik-prevalence-risk-factors-management-and-visual-outcomes
#4
REVIEW
Darren Shu Jeng Ting, Sathish Srinivasan, Jean-Pierre Danjoux
The number of laser in situ keratomileusis (LASIK) procedures is continuing to rise. Since its first application for correcting simple refractive errors over 25 years ago, the role of LASIK has extended to treat other conditions, including postkeratoplasty astigmatism/ametropia, postcataract surgery refractive error and presbyopia, among others. The long-term effectiveness, predictability and safety have been well established by many large studies. However, due to the creation of a potential interface between the flap and the underlying stroma, interface complications such as infectious keratitis, diffuse lamellar keratitis and epithelial ingrowth may occur...
2018: BMJ open ophthalmology
https://www.readbyqxmd.com/read/29607856/hybrid-contact-lenses-for-visual-management-of-patients-after-keratoplasty
#5
Y Altay, O Balta, A Burcu, F Ornek
Aim: This study aims to report the outcomes of new-generation hybrid contact lenses for visual rehabilitation of postkeratoplasty patients. Materials and Methods: Twenty eyes of twenty postkeratoplasty patients were fitted with hybrid lenses. Each patient's keratometric values, ocular surface irregularity indices, central corneal thickness (CCT), uncorrected visual acuity (UCVA), spectacle-corrected visual acuity, contact lens-corrected visual acuity, contact lens fitting data, and contact lens daily wearing time were recorded...
April 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29600188/lamellar-keratoplasty-with-corneoscleral-graft-for-limbal-dermoids
#6
Oriel Spierer, Daniel Gologorsky, Eldad Adler, Richard K Forster
To assess the postoperative outcomes of limbal dermoid excision with corneoscleral graft transplantation. The charts of 8 consecutive patients (mean age: 13.0y) who had undergone limbal dermoid excision with lamellar corneoscleral graft transplantation by a single surgeon were retrospectively reviewed. Mean dermoid size was 7.75 mm (6.0-12.0 mm). Mean visual acuities (in logMAR units) before and after surgery were 1.8 and 1.7, respectively ( P =0.29). Spherical equivalents were 1.3 diopter (D) before surgery and 0...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29564359/femtosecond-laser-assisted-astigmatic-keratotomy-a-review
#7
REVIEW
John S M Chang
Background: Astigmatic keratotomy (AK) remains an accessible means to correct surgically induced or naturally occurring astigmatism. The advantages of femtosecond laser-assisted astigmatic keratotomy (FSAK) over conventional methods have been recognized recently. Main text: This review evaluates the efficacy, complications, and different methods of FSAK for correction of astigmatism in native eyes and those that underwent previous penetrating keratoplasty (PKP)...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29450392/glaucoma-after-penetrating-keratoplasty
#8
REVIEW
Mihail Zemba, Alina-Cristina Stamate
Penetrating keratoplasty is a surgical intervention that despite the progress of surgical techniques and of postoperative treatment continues to have numerous complications. Many of them, such as graft rejection, significant astigmatism, cystoid macular edema, or cataract lead to important limitations of the visual function. Glaucoma is possibly the most dangerous complication following PK, leading to loss of the visual potential of the eye due to irreversible damage to the optic nerve. Identifying the risk factors permits an attentive follow-up and rapid treatment of the postoperative IOP rises...
July 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29296551/surgical-outcome-of-deep-anterior-lamellar-keratoplasty-with-air-assisted-manual-dissection-for-corneas-with-previous-inflammation-or-fibrosis
#9
Yi-Ju Ho, Cheng-Hsiu Wu, Hung-Chi Chen, Chin-Shi Hsiao, Yi-Jen Hsueh, David Hui-Kang Ma
PURPOSE: To report our experience in air-assisted manual dissection deep anterior lamellar keratoplasty (DALK) for the treatment of corneal scar with previous inflammation and fibrosis. MATERIALS AND METHODS: We retrospectively reviewed the medical history of 21 patients (male:female = 13:8 mean age 41.9 years old) with corneal pathology from previous infection and inflammation. Trephination diameter ranged from 7.0 to 8.0 mm, and the graft was oversized by 0.25-0...
October 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29274023/vector-analysis-of-femtosecond-laser-assisted-astigmatic-keratotomy-after-deep-anterior-lamellar-keratoplasty-and-penetrating-keratoplasty
#10
Fouad anNakhli, Ashbala Khattak
PURPOSE: To compare the refractive and keratometric changes induced by femtosecond laser astigmatic keratotomy (AK) for suture-out post-keratoplasty astigmatism in deep anterior lamellar keratoplasty (group I) and penetrating keratoplasty (group II). SETTING: Dhahran Eye Specialist Hospital, Dhahran, Saudi Arabia. DESIGN: Retrospective, comparative, interventional study. METHODS: This study comprised 15 eyes in group I and 35 eyes in group II...
December 22, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29238735/post-keratoplasty-astigmatism-management-by-relaxing-incisions-a-systematic-review
#11
REVIEW
Gaëlle Ho Wang Yin, Louis Hoffart
Postoperative visual acuity can be limited by post-keratoplasty astigmatism, even with a clear corneal graft. Astigmatism management can be performed by selective suture removal, adjustment of sutures, optical correction, photorefractive procedures, wedge resection, intra-ocular lens implantation, intracorneal ring segments, relaxing incisions with or without compression sutures and repeated keratoplasty. Relaxing incisions can be made in the graft, graft-host interface or host cornea. Despite the unpredictability of the method because the flat and steep meridians are usually not orthogonal after penetrating keratoplasty, with asymmetric power distribution, all the studies showed an overall reduction of refractive, keratometric or topographic astigmatism, ranging from 30% to 72% with manual or femtosecond-assisted techniques...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29215394/visual-outcomes-and-aberrometric-changes-with-topography-guided-photorefractive-keratectomy-treatment-of-irregular-astigmatism-after-penetrating-keratoplasty
#12
Francisco Bandeira E Silva, Rossen Mihaylov Hazarbassanov, Eduardo Martines, José Luis Güell, Ana L Hofling-Lima
PURPOSE: To evaluate the visual acuity and keratometric and aberrometric changes in patients with corneal transplants (PKP), who underwent topography-guided photorefractive keratectomy (TG-PRK) with mitomycin C (MMC). METHODS: In this case study, 15 patients with spherical equivalents ranging from -11.00 to -0.25 diopters (D) who underwent penetrating corneal transplantation and had irregular astigmatism ranging from -7.5 to -2.0 D underwent TG-PRK with MMC. Corneal topography and wavefront of all patients were measured preoperatively and 12 months postoperatively...
March 2018: Cornea
https://www.readbyqxmd.com/read/29215393/therapeutic-effects-of-lamellar-keratoplasty-on-terrien-marginal-degeneration
#13
Lin Li, Hualei Zhai, Lixin Xie, Jun Cheng, Weiwei Liu
PURPOSE: To evaluate the therapeutic effects of lamellar keratoplasty (LK) on Terrien marginal degeneration (TMD). METHODS: Retrospective interventional case series. Medical records of 63 patients (71 eyes) who received LK for TMD at Qingdao Eye Hospital, Shandong Eye Institute from December 1995 to March 2014 were reviewed. A total of 56 eyes were treated with partial LK and 15 eyes with total LK. Complications, visual acuity recovery, and graft status were evaluated...
March 2018: Cornea
https://www.readbyqxmd.com/read/29165417/-pterygium-etiology-pathogenesis-treatment
#14
S A Malozhen, S V Trufanov, D A Krakhmaleva
Pterygium is a degenerative condition characterized by fibrovascular outgrowth of conjunctiva over the cornea. Many theories exist that try to explain its pathogenesis. The current belief is that this disease is multifactorial with ultraviolet radiation being the most important trigger. Attention is also paid to such factors as tear film changes, cytokines and growth factors disbalance, immunologic disturbances, genetic mutations, and viral infections. Modern classifications consider the rate of fibrovascular growth, its progressive potential, and histological features...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29146479/visual-outcome-of-penetrating-keratoplasty-deep-anterior-lamellar-keratoplasty-and-descemet-membrane-endothelial-keratoplasty
#15
Clàudia Garrido, Genís Cardona, Josep L Güell, Jaume Pujol
PURPOSE: A single-center, cross-sectional study was designed to assess and compare objective and subjective quality of vision of patients intervened with penetrating keratoplasty (PK), deep anterior lamellar keratoplasty (DALK) and Descemet membrane endothelial keratoplasty (DMEK). METHODS: Forty-six patients previously intervened with PK (22 eyes), DALK (7 eyes) and DMEK (17 eyes) were recruited. Visual evaluation included spherical and cylindrical refraction, distance corrected visual acuity (DCVA), photopic contrast sensitivity (CS), optical quality, measured with the HD Analyzer (objective scattering index [OSI], MTF cut-off and Strehl ratio), and ocular and corneal aberrometry, measured with the KR-1W Wavefront Analyzer...
November 13, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/29120715/new-pinhole-sulcus-implant-for-the-correction-of-irregular-corneal-astigmatism
#16
Claudio C Trindade, Bruno C Trindade, Fernando C Trindade, Liliana Werner, Robert Osher, Marcony R Santhiago
PURPOSE: To evaluate the effect on visual acuity of the implantation of a new intraocular pinhole device (Xtrafocus) in cases of irregular corneal astigmatism with significant visual impairment. SETTING: University of São Paulo, São Paulo, Brazil. DESIGN: Prospective case series. METHODS: Pseudophakic eyes of patients with irregular corneal astigmatism were treated with the pinhole device. The causes of irregular corneal astigmatism were keratoconus, post radial keratotomy (RK), post-penetrating keratoplasty (PKP), and traumatic corneal laceration...
October 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29095753/effect-of-suture-removal-on-refraction-and-graft-curvature-after-deep-anterior-lamellar-keratoplasty-in-patients-with-keratoconus
#17
Sepehr Feizi, Mohammad Ali Javadi, Nazanin Behnaz, Sadaf Fani-Hanife, Mohammad Reza Jafarinasab
PURPOSE: To evaluate the effect of suture removal on refraction and keratometry measurements after deep anterior lamellar keratoplasty (DALK). METHODS: This retrospective study enrolled 54 keratoconus-affected eyes that underwent DALK. A combined suturing technique consisting of a 16-bite single running and 8-bite interrupted 10-0 nylon sutures was used at the time of keratoplasty. Selective interrupted suture removal was performed in a subgroup of patients to reduce postkeratoplasty astigmatism...
January 2018: Cornea
https://www.readbyqxmd.com/read/29032110/use-of-donors-predisposed-by-corneal-collagen-cross-linking-in-penetrating-keratoplasty-for-treating-patients-with-keratoconus
#18
RANDOMIZED CONTROLLED TRIAL
Ting Huang, Ruifen Ye, Chen Ouyang, Chao Hou, Yunwei Hu, Qianni Wu
PURPOSE: To investigate whether use of donors predisposed by corneal collagen cross-linking (CXL) reduced myopic refractive errors for keratoconic eyes after penetrating keratoplasty (PK). DESIGN: Randomized controlled trial. METHODS: One hundred sixteen eyes of 116 patients with keratoconus from Zhongshan Ophthalmic Center were enrolled. Using stratified block randomization, we assigned eligible eyes to the CXL graft group (Group 1) or conventional graft group (Group 2)...
December 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28967073/microbubble-technique-in-failed-deep-anterior-lamellar-keratoplasty-2-year-outcomes
#19
Stefano Lippera, Giuseppe Pallotta, Piero Ferroni, Myrta Lippera, Leopoldo Spadea, Carlo Cagini
PURPOSE: To compare the long-term results of big-bubble technique and microbubble techniques to complete stroma dissection after failure of achieving a big-bubble. METHODS: A total of 35 eyes with keratoconus underwent lamellar keratoplasty with the big-bubble technique (15 eyes) or the microbubble technique (15 eyes). Conversion to penetrating keratoplasty was performed in 3 eyes of the big-bubble group and in 2 eyes of the microbubble group. Best-corrected visual acuity, corneal thickness, corneal astigmatism, and endothelial cell count were assessed preoperatively and at 12 and 24 months after surgery...
September 11, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28953492/descemet-membrane-endothelial-keratoplasty-in-eyes-with-previous-laser-refractive-surgery-outcomes-and-complications
#20
Dorian A Zeidenweber, Zachary M Mayko, Michael D Straiko, Mark A Terry
PURPOSE: To evaluate the refractive predictability and efficacy of Descemet membrane endothelial keratoplasty (DMEK) for patients with previous laser refractive surgery. METHODS: We retrospectively reviewed our cohort of endothelial keratoplasty surgical cases. We identified 21 eyes that underwent laser-assisted in situ keratomileusis (n = 17) or photorefractive keratectomy (n = 4) and were treated with DMEK for endothelial failure. Patients were analyzed preoperatively and at 6 months postoperatively for changes in visual acuity, refraction, and corneal topography...
November 2017: Cornea
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