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https://www.readbyqxmd.com/read/28095539/a-proposed-method-for-upper-eyelid-and-infrabrow-tightening-using-a-transcutaneous-temperature-controlled-radiofrequency-device-with-opaque-plastic-eye-shields
#1
Douglas J Key, Lauren Boudreaux
BACKGROUND: Laxity of the eyelid and periorbital area, a common manifestation of aging, is usually addressed via blepharoplasty and/ or fat transfer. Given the trend toward safer, less invasive treatments preferred by those patients reticent to undergo more invasive procedures, viable alternatives have been sought. Transcutaneous temperature controlled radiofrequency (TTCRF) integrates non- invasive super cial RF treatment with automatic temperature feedback control of energy deposition, as a stimulator of overall collagen remodeling; however, the globe of the eye is particularly sensitive to RF energy...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28092651/long-lasting-antinociceptive-effects-of-green-light-in-acute-and-chronic-pain-in-rats
#2
Mohab M Ibrahim, Amol Patwardhan, Kerry B Gilbraith, Aubin Moutal, Xiaofang Yang, Lindsey A Chew, Tally Largent-Milnes, T Philip Malan, Todd W Vanderah, Frank Porreca, Rajesh Khanna
Treatments for chronic pain are inadequate, and new options are needed. Nonpharmaceutical approaches are especially attractive with many potential advantages including safety. Light therapy has been suggested to be beneficial in certain medical conditions such as depression, but this approach remains to be explored for modulation of pain. We investigated the effects of light-emitting diodes (LEDs), in the visible spectrum, on acute sensory thresholds in naive rats as well as in experimental neuropathic pain...
February 2017: Pain
https://www.readbyqxmd.com/read/28092274/power-profiles-and-in-vitro-optical-quality-of-scleral-contact-lenses-effect-of-the-aperture-and-power
#3
Alberto Domínguez-Vicent, Jose Juan Esteve-Taboada, Alberto Recchioni
OBJECTIVE: To assess the power profile and in vitro optical quality of scleral contact lenses with different powers as a function of the optical aperture. METHODS: The mini and semiscleral contact lenses (Procornea) were measured for five powers per design. The NIMO TR-1504 (Lambda-X) was used to assess the power profile and Zernike coefficients of each contact lens. Ten measurements per lens were taken at 3- and 6-mm apertures. Furthermore, the optical quality of each lens was described in Zernike coefficients, modulation transfer function, and point spread function (PSF)...
January 13, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28089205/on-the-power-profiles-of-contact-lenses-measured-with-nimo-tr1504
#4
Manuel Rodríguez-Vallejo, Diego Montagud, Juan A Monsoriu, Walter D Furlan
No abstract text is available yet for this article.
January 11, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28089075/conjunctival-impression-cytology-evaluation-of-patients-with-dry-eye-disease-using-scleral-contact-lenses
#5
Sarah La Porta Weber, Rossen Mihaylov Hazarbassanov, Alex Nasaré, José Álvaro Pereira Gomes, Ana Luisa Hofling-Lima
PURPOSE: To evaluate conjunctival impression cytology and HLADR expression changes after wearing scleral contact lenses (ScCLs) for moderate to severe dry eye disease (DED). DESIGN: Prospective interventional case series. METHODS: Forty-one eyes from 25 patients with moderate to severe DED were evaluated for Esclera ScCL treatment. Best-corrected visual acuity (BCVA) and slit-lamp findings were assessed. Impression cytology specimens were obtained from DED patients at the baseline and after wearing ScCLs for 12 months...
January 6, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28081493/optical-and-vibrational-properties-of-phosphorylcholine-based-contact-lenses-experimental-and-theoretical-investigations
#6
Katarzyna Filipecka, Rafał Miedziński, Maciej Sitarz, Jacek Filipecki, Małgorzata Makowska-Janusik
The Raman, MIR and UV-vis spectroscopy have been used to characterize Omafilcon A material constructing the one of the Proclear family contact lenses. The Omafilcon A is hydrogel material composed of 2-hydroxyethyl methacrylate (HEMA) and 2-methacryloyloxyethyl phosphorylcholine (PC) polymers crosslinked with ethyleneglycol dimethacrylate (EGDMA). Vibrational and electronic properties of the Omafilcon A material were also investigated by quantum chemical calculations. Experimentally obtained Raman, MIR and optical spectra were compared to the theoretical ones calculated applying RHF and DFT methodology...
January 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28073689/corneo-scleral-contact-lens-in-a-piggyback-system-for-keratoconus-a-case-report
#7
Esteban Porcar, Juan Carlos Montalt, Enrique España-Gregori, Cristina Peris-Martínez
PURPOSE: We describe a case of fitting a corneo-scleral contact lens with a multi-aspheric geometry design (MAGD CScL) on top of a daily silicone hydrogel lens (piggyback system) for keratoconus management. METHODS: A 48-year-old man using soft toric contact lenses required an improvement in the unsatisfactory quality of his vision. He presented with bilateral asymmetric keratoconus with high myopia in the right eye (RE) and severe myopia in the left eye (LE). In addition, he had low vision in his LE because of a maculopathy...
January 7, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28063778/violet-light-exposure-can-be-a-preventive-strategy-against-myopia-progression
#8
Hidemasa Torii, Toshihide Kurihara, Yuko Seko, Kazuno Negishi, Kazuhiko Ohnuma, Takaaki Inaba, Motoko Kawashima, Xiaoyan Jiang, Shinichiro Kondo, Maki Miyauchi, Yukihiro Miwa, Yusaku Katada, Kiwako Mori, Keiichi Kato, Kinya Tsubota, Hiroshi Goto, Mayumi Oda, Megumi Hatori, Kazuo Tsubota
Prevalence of myopia is increasing worldwide. Outdoor activity is one of the most important environmental factors for myopia control. Here we show that violet light (VL, 360-400nm wavelength) suppresses myopia progression. First, we confirmed that VL suppressed the axial length (AL) elongation in the chick myopia model. Expression microarray analyses revealed that myopia suppressive gene EGR1 was upregulated by VL exposure. VL exposure induced significantly higher upregulation of EGR1 in chick chorioretinal tissues than blue light under the same conditions...
February 2017: EBioMedicine
https://www.readbyqxmd.com/read/28059302/replication-of-thermoplastic-polymer-spherical-lens-array-using-microforged-molding-technique
#9
Dan Xie, Xuefeng Chang, Xiayun Shu, Jian Wang, Lifang Mei, Shanming Luo
In this paper, we propose a replication method of thermoplastic polymer spherical lens array using a novel microforged mold. The Si<sub>3</sub>N<sub>4</sub> ceramic balls, with 3.5 mm diameter, 10 nm surface roughness and 84 nm deviation from spherical profile, were utilized as indentor to generate aluminum alloy lens array mold. Upon the optimization of technical parameters, such as heating and de-molding temperature, indentation force and holding time, a high quality spherical lens array mold was obtained...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28057440/new-web-based-algorithm-to-improve-rigid-gas-permeable-contact-lens-fitting-in-keratoconus
#10
Sara Ortiz-Toquero, Guadalupe Rodriguez, Victoria de Juan, Raul Martin
PURPOSE: To calculate and validate a new web-based algorithm for selecting the back optic zone radius (BOZR) of spherical gas permeable (GP) lens in keratoconus eyes. METHODS: A retrospective calculation (n=35; multiple regression analysis) and a posterior prospective validation (new sample of 50 keratoconus eyes) of a new algorithm to select the BOZR of spherical KAKC design GP lenses (Conoptica) in keratoconus were conducted. BOZR calculated with the new algorithm, manufacturer guidelines and APEX software were compared with the BOZR that was finally prescribed...
January 2, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28053527/fabrication-of-nonfouling-bactericidal-and-bacteria-corpse-release-multifunctional-surface-through-surface-initiated-raft-polymerization
#11
Bailiang Wang, Zi Ye, Yihong Tang, Yuemei Han, Quankui Lin, Huihua Liu, Hao Chen, Kaihui Nan
Infections after surgery or endophthalmitis are potentially blinding complications caused by bacterial adhesion and subsequent biofilm formation on the intraocular lens. Neither single-function anti-adhesion surface nor contacting killing surface can exhibit ideal antibacterial function. In this work, a novel (2-(dimethylamino)-ethyl methacrylate-co-2-methacryloyloxyethyl phosphorylcholine) (p (DMAEMA-co-MPC)) brush was synthesized by "grafting from" method through reversible-addition fragmentation chain transfer polymerization...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28027276/accommodation-and-phoria-in-children-wearing-multifocal-contact-lenses
#12
Celia R Gong, David Troilo, Kathryn Richdale
PURPOSE: To determine the effect of multifocal contact lenses on accommodation and phoria in children. METHODS: This was a prospective, non-dispensing, randomized, crossover, single-visit study. Myopic children with normal accommodation and binocularity and no history of myopia control treatment were enrolled and fitted with CooperVision Biofinity single vision (SV) and multifocal (MF, +2.50D center distance add) contact lenses. Accommodative responses (photorefraction) and phorias (modified Thorington) were measured at four distances (>3 m, 100 cm, 40 cm, 25 cm)...
December 23, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28009794/ocular-straylight-with-different-multifocal-contact-lenses
#13
Grzegorz Łabuz, Norberto López-Gil, Thomas J T P van den Berg, Fernando Vargas-Martín
PURPOSE: Multifocal contact lenses have been growing in popularity as a modality to correct presbyopic eyes, although visual side effects such as disability glare have been reported. The objective of this study was to investigate the effect of multifocal contact lenses on disability glare by means of ocular straylight. METHODS: A prospective randomized, comparative study was performed that included 16 subjects free of ocular pathology. Straylight was measured using a commercial straylight meter with the natural and dilated pupil...
December 22, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28003735/oxygen-permeability-of-the-pigmented-material-used-in-cosmetic-daily-disposable-contact-lenses
#14
Stephen Galas, Lenora L Copper
PURPOSE: To evaluate the individual contributions of pigment colorant and packing solution containing polyvinyl pyrrolidone (PVP) on the oxygen permeability (Dk) of a cosmetic printed etafilcon A daily disposable contact lens packaged with PVP. METHOD: The oxygen transport of a contact lens is evaluated through the central optical zone of the lens. Cosmetic printed contact lenses contain pigment colorant in the periphery or mid-periphery of the lens. Therefore, to assess the impact of cosmetic print on oxygen permeability, special lenses need to be produced that contain the colorant within the central optical zone...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28003235/patients-perception-of-ded-and-its-relation-with-time-to-diagnosis-and-quality-of-life-an-international-and-multilingual-survey
#15
Marc Labetoulle, Maurizio Rolando, Christophe Baudouin, Gysbert van Setten
BACKGROUND/AIMS: To improve understanding of patients' experience and perception of dry eye disease (DED) and its impact on quality of life (QoL). METHODS: This survey was observational, non-interventional and cross-sectional. The survey was conducted online on 706 patients with DED from five European countries (France, Germany, Italy, Spain and the UK). All patients met the following inclusion criteria: 40 years or older with DED diagnosed by a healthcare professional (HCP), not wearing contact lenses and using tear substitutes daily for at least 6 months...
December 21, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28002224/meibomian-gland-dysfunction-and-contact-lens-discomfort
#16
Reiko Arita, Shima Fukuoka, Naoyuki Morishige
Meibomian glands are located in the eyelids and secrete meibum, which gives rise to the lipid layer of the tear film. Changes to these glands can lead to the development of meibomian gland dysfunction (MGD), which is associated with various ocular symptoms such as fatigue, dryness, burning sensation, and heavy sensation. The diagnosis of MGD thus relies on evaluation of ocular symptoms, meibum condition, and lid margin abnormalities. The recent development of noninvasive meibography and tear interferometry has provided important insight into meibomian gland structure and function, respectively...
January 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28002223/is-there-a-role-for-inflammation-in-contact-lens-discomfort
#17
Mark D P Willcox
PURPOSE: The aim of this study was to examine the literature with respect to inflammation of the ocular surface and the presence of inflammatory mediators in the tear film during contact lens wear. METHODS: The literature on contact lens discomfort that relates to signs of inflammation was searched. Reference was paid to the cardinal signs of inflammation (pain, heat, redness, and swelling) as well as the appearance of inflammatory mediators in the tear film during contact lens wear...
January 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/27994389/characteristics-of-keratoconic-patients-attending-a-specialist-contact-lens-clinic-in-kenya
#18
Zahra Aly Rashid, Michel Millodot, Katharine S E Evans
PURPOSE: To describe the characteristics of keratoconus (KC) patients seen in a contact lens clinic of a children's hospital in Kenya. RESULTS: A total of 254 patients' records were analyzed. Mean age at presentation to the clinic was 20.97 ± 11.13 year (range, 6-84 years) with 75% between the ages of 6 and 25 years. There was a preponderance of males (59.8%). Most patients were referred by an ophthalmologist. All patients were Africans. The most common complaints were blurred vision (50%), poor visual acuity with spectacles (33...
October 2016: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/27993459/corneal-epithelial-bullae-after-short-term-wear-of-small-diameter-scleral-lenses
#19
Alex D Nixon, Joseph T Barr, Dean A VanNasdale
Complications of scleral lens wear are not well documented or understood. While multiple studies focus on oxygen transmission during scleral lens wear and associated corneal swelling, little is known about the effects of varying scleral lens fitting relationships, especially when there is corneal interaction. Scleral lenses, by convention, are designed to completely clear the corneal surface and rest on the conjunctival and scleral tissue. However, some designs maximize oxygen transmission by reducing the lens diameter, thickness, and recommended corneal clearance...
December 16, 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/27982215/toxic-anterior-segment-syndrome-following-deep-anterior-lamellar-keratoplasty
#20
Neslihan Sevimli, Remzi Karadag, Ozgur Cakici, Huseyin Bayramlar, Seydi Okumus, Unsal Sari
We present the case of a 31-year-old patient with toxic anterior segment syndrome (TASS) that developed after undergoing deep anterior lamellar keratoplasty (DALK). She had keratoconus, and despite wearing hard contact lenses for many years in the left eye, her vision had deteriorated; therefore, DALK was performed on this eye. The preoperative visual acuity (VA) was finger counting at 3 m. Routine DALK was performed using the "big-bubble" technique. The corneal entry incision was hydrated at the end of the surgery, which was terminated by air injection into the anterior chamber...
September 2016: Arquivos Brasileiros de Oftalmologia
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