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Scleral lens

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https://www.readbyqxmd.com/read/29053041/scleral-contact-lenses-for-the-management-of-complicated-ptosis
#1
Konstantinos Katsoulos, Gerasimos Livir Rallatos, Ioannis Mavrikakis
PURPOSE: To present the management of three patients suffering from ptosis of various etiologies, with scleral contact lenses. MATERIAL AND METHODS: Three patients (five eyes) with ptosis resulting from levator dehiscence due to long-term rigid gas permeable contact lens wear for keratoconus, phthisis bulbi, and myopathy due to Kearns-Sayre syndrome were identified during a 2-year period. They were fitted with scleral contact lenses in order to provide cosmesis by lifting the upper eyelid with the bulk of the lens, and simultaneously provide vision correction where applicable...
October 20, 2017: Orbit
https://www.readbyqxmd.com/read/29034157/endoscope-assisted-vitrectomy-in-the-management-of-retinal-detachment-with-corneal-opacity
#2
Yu-Fang Huang, Chia-Jen Chang
A 51-year-old male who had suffered from right eye rhegmatogenous retinal detachment with proliferative vitreoretinopathy received surgical treatments which included the following procedures: lens extraction, scleral buckle, vitrectomy, membrane peeling, photocoagulation, and silicone oil injection. The presenting visual acuity of the right eye was light perception. Slit-lamp examination revealed corneal opacity without a visible fundus. B-scan ultrasonography revealed retinal detachment. Endoscope-assisted vitrectomy was then performed in December 2014...
July 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29027061/scleral-fixated-intraocular-lens-implantation-with-a-modified-z-suture-technique
#3
Erdem Dinç, Mustafa Vatansever, Özer Dursun, H Görkem Markirt, Bahri Aydın, Ayça Yılmaz, Ufuk Adıgüzel
PURPOSE: To evaluate visual outcomes and complications in scleral fixated intraocular lens (IOL) implantation with the modified Z-suture technique. MATERIALS AND METHODS: Thirty-five eyes of 35 patients (20 male, 15 female) were included in the study. Patients underwent scleral fixated IOL implantation using the modified Z-suture technique and were followed in terms of visual acuity and complications. RESULTS: Mean postoperative follow-up time was 12...
October 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29023313/mini-scleral-lenses-for-correction-of-refractive-errors-after-radial-keratotomy
#4
Hsiao-Sang Chu, I-Jong Wang, Grace A Tseng, Wei-Li Chen, Yu-Chih Hou, Fung-Rong Hu
OBJECTIVE: To evaluate the factors affecting clinical outcomes of correcting cumulative refractive errors or irregular astigmatism after radial keratotomy (RK) using mini-scleral lenses. METHODS: We retrospectively analyzed 36 eyes receiving mini-scleral lenses after RK from July 2011 to June 2016. Analyses included age, refractive errors, best spectacle-corrected visual acuity (BSCVA), best contact lens-corrected visual acuity (BCLCVA), topographic indices, RK treatment zone diameter (TZD), power difference (PrD) within the RK treatment zone, and decentration distance (DD) of the RK treatment zone center...
October 11, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28986594/plateau-iris-distribution-across-anterior-segment-optical-coherence-tomography-defined-subgroups-of-subjects-with-primary-angle-closure-glaucoma
#5
Sushma Verma, Monisha E Nongpiur, Hnin H Oo, Eray Atalay, David Goh, Tina T Wong, Shamira A Perera, Tin Aung
Purpose: We previously identified three distinct subgroups of patients with primary angle closure glaucoma (PACG) based on anterior segment optical coherence tomography (ASOCT) imaging. Group 1 was characterized by a large iris area with deepest anterior chambers, group 2 by a large lens vault (LV) and shallow anterior chamber depth (ACD), and group 3 displayed intermediate values across iris area, LV, and ACD. The purpose of the present study was to determine the distribution of plateau iris in these subgroups using ultrasound biomicroscopy (UBM) features...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28985803/flashes-and-floaters-a-survey-of-canadian-ophthalmology-residents-practice-patterns
#6
Parnian Arjmand, Bernard Hurley
BACKGROUND: Residents are often the first point of contact in assessing patients who present with "flashes and floaters" in the emergency ophthalmology clinic. Most often, these symptoms are attributed to a posterior vitreous detachment (PVD), which may be associated with a retinal tear in up to 14% of cases. A proper peripheral retinal exam is, thus, imperative, and techniques other than scleral depression may not be sufficient. We conducted a cross-sectional survey of Canadian ophthalmology residents-in-training to understand the current resident practice patterns for examination of the peripheral retina...
October 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28980165/outcomes-of-23-and-25-gauge-transconjunctival-sutureless-vitrectomies-for-dislocated-intraocular-lenses
#7
Priya Bajgai, Basavraj Tigari, Ramandeep Singh
PURPOSE: To compare the outcome of 23-gauge as compared with 25-gauge transconjunctival sutureless vitrectomy (TSV) in the management of dislocated intraocular lenses (IOLs). DESIGN: Retrospective, non-consecutive, comparative, interventional case series. PARTICIPANTS: Patients with dislocated intraocular lens who underwent sutureless PPV using either 23-gauge or 25-gauge instruments. METHODS: The patients who presented with a dislocated IOL, underwent TSV with repositioning of the intraocular lens, either in the sulcus or scleral-fixated sutured/glued...
October 4, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28973318/astigmatism-and-refractive-outcome-after-late-in-the-bag-intraocular-lens-dislocation-surgery-a-randomized-clinical-trial
#8
RANDOMIZED CONTROLLED TRIAL
Olav Kristianslund, Atle Einar Østern, Liv Drolsum
Purpose: To compare surgically induced astigmatism (SIA) and refractive outcomes between two operation methods for late in-the-bag IOL dislocation. Methods: In this prospective, randomized, parallel-group clinical trial, 104 patients (eyes) were assigned to IOL repositioning by scleral suturing 1.5- to 2-mm posterior to limbus (n = 54) or IOL exchange with a retropupillar iris-claw IOL using a 5.5-mm scleral pocket incision (n = 50). The SIA was determined by vector analysis through conversion of corneal cylinders to Cartesian coordinates, and is presented as magnitude in diopters @ direction in degrees (D @ °)...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28968300/scleral-lenses-in-the-management-of-corneal-irregularity-and-ocular-surface-disease
#9
Ellen Shorter, Jennifer Harthan, Cherie B Nau, Amy Nau, Joseph T Barr, David O Hodge, Muriel M Schornack
PURPOSE: To describe current practice patterns regarding the use of scleral lens therapy in the management of corneal irregularity and ocular surface disease among eye care providers who fit scleral lenses. METHODS: The Scleral Lenses in Current Ophthalmic Practice: an Evaluation (SCOPE) study group conducted an electronic survey of eye care providers from January 15 to March 31, 2015. Respondents ranked management options for corneal irregularity in the order in which they would generally consider their use...
September 29, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28966436/multi-scale-modeling-of-vision-guided-remodeling-and-age-dependent-growth-of-the-tree-shrew-sclera-during-eye-development-and-lens-induced-myopia
#10
Rafael Grytz, Mustapha El Hamdaoui
The sclera uses unknown mechanisms to match the eye's axial length to its optics during development, producing eyes with good focus (emmetropia). A myopic eye is too long for its own optics. We propose a multi-scale computational model to simulate eye development based on the assumption that scleral growth is controlled by genetic factors while scleral remodeling is driven by genetic factors and the eye's refractive error. We define growth as a mechanism that changes the tissue volume and mass while remodeling involves internal micro-deformations that are volume-preserving at the macroscale...
December 2017: Journal of Elasticity
https://www.readbyqxmd.com/read/28961565/cataract-surgery-in-eyes-with-keratoconus-a-review-of-the-current-literature
#11
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/28957955/opacification-of-scleral-sutured-akreos-ao60-intraocular-lens-after-vitrectomy-with-gas-tamponade-case-series
#12
Ananda Kalevar, Michael Dollin, R Rishi Gupta
BACKGROUND/PURPOSE: We report the first two cases of postoperative opacification of scleral-sutured Akreos AO60 intraocular lens after vitrectomy with the gas tamponade. METHODS: Two patients with ectopia lentis underwent pars plana vitrectomy, pars plana lensectomy, and scleral fixation of an Akreos AO60 intraocular lens with Gore-Tex suture. Retinal breaks were noted during vitrectomy and consequently intravitreal gas tamponade was used after endolaser retinopexy...
September 27, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28953598/the-impact-of-scleral-contact-lens-vault-on-visual-acuity-and-comfort
#13
Heinz Otchere, Lyndon Jones, Luigina Sorbara
PURPOSE: To assess how varying degrees of corneal clearance of scleral contact lenses (ScCL) impact visual acuity (VA) and comfort in patients with corneal ectasia. METHOD: Three ScCL were fitted to 20 subjects with previous diagnosis of either keratoconus (n=18) or pellucid marginal degeneration (n=2). Fitting of ScCL was based on corneal sagittal height (CSH) measured with Visante OCT at a 15-mm chord on the horizontal meridian. To select the ScCL from the diagnostic lens set, values of 325, 375, and 425 μm were randomly added in sequence to CSH...
September 26, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28932340/contact-lenses-for-keratoconus-current-practice
#14
Marilita M Moschos, Eirini Nitoda, Panagiotis Georgoudis, Miltos Balidis, Eleftherios Karageorgiadis, Nikos Kozeis
BACKGROUND: Keratoconus is a chronic, bilateral, usuallly asymmetrical, non-inflammatory, ectatic disorder, being characterized by progressive steepening, thinning and apical scarring of the cornea. Initially, the patient is asymptomatic, but the visual acuity gradually decreases, resulting in significant vision loss due to the development of irregular astigmatism, myopia, corneal thinning and scarring. The classic treatment of visual rehabilitation in keratoconus is based on spectacles and contact lenses (CLs)...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28930883/reproducibility-and-agreement-of-anterior-segment-parameter-measurements-obtained-using-the-casia2-and-spectralis-oct2-optical-coherence-tomography-devices
#15
Benjamin Y Xu, Derek D Mai, Rafaella C Penteado, Luke Sanders, Robert N Weinreb
PURPOSE: To assess the reproducibility and agreement of measurement values obtained from the Tomey CASIA2 and Heidelberg Spectralis OCT2 anterior segment optical coherence tomography (AS-OCT) devices. METHODS: Twenty eyes from ten subjects ranging from age 28 to 45 years with no history of eye conditions or intraocular surgery were included. Two scans were obtained with each device in a standardized dark-room environment after a period of dark adaptation. One AS-OCT image along the horizontal (temporal-nasal) meridian was analyzed per eye and per scan...
September 19, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28920158/comparison-of-outcomes-of-scleral-fixation-with-and-without-pars-plana-vitrectomy-for-the-treatment-of-dislocated-intraocular-lens
#16
Seung Yong Choi, You Sook Hwang, Mirinae Kim, Soon Il Choi, Young-Hoon Park
PURPOSE: To investigate the surgical outcomes of scleral fixation with either pars plana vitrectomy (ppV) or anterior vitrectomy (AV) for the treatment of dislocated intraocular lens (IOL). METHODS: By retrospective review of electronic medical records, patients with in-the-bag spontaneous IOL dislocation who underwent IOL exchange with scleral fixation were included and grouped according to the vitrectomy method: ppV (group 1) and AV (group 2). Post-operative surgical outcomes including visual acuity (log MAR), spherical equivalent, and surgically induced astigmatism (SIA) and complications were investigated and analyzed...
September 17, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28917407/corneal-topography-and-keratometry-changes-after-glued-intraocular-lens-implantation
#17
Dhivya Ashok Kumar, Harspreet Kaur, Amar Agarwal, Sajitha Selvaraj, Sathish Kumar Pandian, Vamsi Chintalpati
PURPOSE: To analyze the alterations in corneal topography and keratometry (K) after glued transscleral-fixated intraocular lens (IOL) implantation. SETTING: Dr. Agarwal's Eye Hospital, Chennai, India. DESIGN: Prospective case series. METHODS: Eyes having glued IOL implantation for aphakia or subluxated lens (>180 degrees) were included. Preoperative autorefractometer and corneal topography was performed. Intraoperative parameters, namely the type, position, and incision size, flap position, and number of sutures were noted...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28898111/complications-of-scleral-fixated-intraocular-lenses
#18
Emma C Davies, Roberto Pineda
INTRODUCTION: Understanding the evolution of complications after scleral-fixated lens placement demonstrates advantageous surgical techniques and suitable candidates. MATERIALS/METHODS: A literature search in PubMed for several terms, including "scleral intraocular lens complication," yielded 17 relevant articles. RESULTS: Reviewing complication trends over time, lens tilt and suture erosion have decreased, cystoid macular edema has increased, and retinal detachment has remained the same after scleral-fixated lens placement...
September 12, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28887116/residual-angle-closure-one-year-after-laser-peripheral-iridotomy-in-primary-angle-closure-suspects
#19
Mani Baskaran, Elizabeth Yang, Sameer Trikha, Rajesh S Kumar, Hon Tym Wong, Mingguang He, Paul Tk Chew, Paul J Foster, David Friedman, Tin Aung
PURPOSE: To determine the incidence and baseline clinical and anterior segment optical coherence tomography (AS-OCT) predictors associated with residual angle closure as assessed by gonioscopy 1 year after laser peripheral iridotomy (LPI) in primary angle closure suspects (PACS). DESIGN: Sub-analysis of randomized controlled trial data METHODS: AS-OCT images (Visante, Carl Zeiss Meditec, Dublin, CA) from 181 PACS subjects ≥ 50 years of age, were analyzed using customized software, prior to, and 1 year after LPI...
September 5, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28868754/size-does-matter-what-is-the-corneo-limbal-diameter
#20
REVIEW
Jan Pg Bergmanson, Jesus G Martinez
This review surveys available literature for corneal and limbal dimensions. With modern scleral lenses, these measures have become central to determining the overall size of a lens for satisfactory fitting. In general, published values are not based on a definition of what is being measured. In addition, the most widely accepted average corneal diameter measurement, 11.7 × 10.6 mm, emanates from one source published more than 50 years ago. This value was not based on a measurement but appears to be the cumulative impression of measurements from seven studies conducted between 67 and 127 years ago...
September 3, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
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