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https://www.readbyqxmd.com/read/29789560/kin-discrimination-allows-plants-to-modify-investment-towards-pollinator-attraction
#1
Rubén Torices, José M Gómez, John R Pannell
Pollinators tend to be preferentially attracted to large floral displays that may comprise more than one plant in a patch. Attracting pollinators thus not only benefits individuals investing in advertising, but also other plants in a patch through a 'magnet' effect. Accordingly, there could be an indirect fitness advantage to greater investment in costly floral displays by plants in kin-structured groups than when in groups of unrelated individuals. Here, we seek evidence for this strategy by manipulating relatedness in groups of the plant Moricandia moricandioides, an insect-pollinated herb that typically grows in patches...
May 22, 2018: Nature Communications
https://www.readbyqxmd.com/read/29784166/opinions-on-corrective-refractive-surgery
#2
Helen Chung, Emi Sanders, Jamie Bhamra
OBJECTIVE: To investigate public perception that ophthalmologists are hesitant to undergo refractive surgery by determining the personal opinions of ophthalmologists on different surgical options. DESIGN: Prospective cross-sectional survey. PARTICIPANTS: Members of the American Society of Cataract and Refractive Surgery electronic mailing list. METHODS: An online survey administered from July to August 2014. RESULTS: There were 396 (5...
June 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29778108/rotation-of-a-toric-intraocular-lens-from-neodymium-yag-laser-posterior-capsulotomy
#3
Clemens Kaindlstorfer, Mario Kneifl, Peter Reinelt, Ulrich Schönherr
A 77-year-old man had cataract surgery in the left eye in March 2017. A toric intraocular lens (IOL) was implanted because of astigmatism. The postoperative meridian of the IOL was located nearly exactly in the planned meridian, which was controlled 1 week later with ray-tracing aberrometry (iTrace) and the smartphone application Axis Assistant. The referring ophthalmologist proceeded directly with a neodymium:YAG (Nd:YAG) laser posterior capsulotomy in his own office, after which the meridian of the implanted toric IOL was rotated more than 115 degrees...
April 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29747366/-a-multicenter-study-of-the-effectiveness-and-safety-of-toric-intraocular-lens-implantation
#4
X D Song, Y S Hao, Y Z Bao, Z H Li, H Zhang, A Y Yu, M S Zhao, Y S Huang, J Fang, Y Liu, N L Wang
Objective: To evaluate the effectiveness and safety of Proming(®)Toric intraocular lens (IOL) in adults with cataract combined with corneal regular astigmatism. Methods: Multicentre, randomized, open and positive parallel controlled clinical study. A total of 121 patients (121 eyes) who had cataract combined with corneal regular astigmatism and met the inclusion criteria were enrolled in 9 hospitals from May 2014 to May 2016. There were 45 males and 76 females and the median age was 71 (42-88) years old. A total of 121 patients (121 eyes) were randomly assigned to the study group and the control group through the Central Randomization System...
May 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29747363/-value-the-correction-of-corneal-astigmatism-in-cataract-surgery
#5
J Wang, Y X Cao
The aim of modern micro-incision phacoemulsification combined with foldable intraocular lens implantation and femtosecond laser-assisted cataract surgery is evolving from a simple pursuit of recuperation to a refractive procedure, which involves the correction of ametropia according to preoperative and postoperative refractive conditions, especially corneal astigmatism, in order to achieve the goal of optimized postoperative uncorrected full range of vision. Nowadays, due attention to the effect of preoperative corneal astigmatism, surgery-induced astigmatism and residual astigmatism after operation is lacked, which affect postoperative visual acuity significantly...
May 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29738590/refractive-outcomes-after-femtosecond-laser-assisted-cataract-surgery-in-eyes-with-anterior-chamber-phakic-intraocular-lenses
#6
Gernot Steinwender, Mehdi Shajari, Thomas Kohnen
PURPOSE: To report the efficacy, predictability, and safety of femtosecond laser-assisted cataract surgery (FLACS) in eyes with anterior chamber phakic intraocular lenses (IOLs). METHODS: This retrospective case series included eyes with previous implantation of an angle-supported and an iris-fixated phakic IOL for the correction of myopia that underwent a combined procedure of phakic IOL ex-plantation and FLACS with in-the-bag implantation of a posterior chamber IOL...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29731603/comparative-evaluation-of-toric-intraocular-lens-alignment-and-visual-quality-with-image-guided-surgery-and-conventional-three-step-manual-marking
#7
Jeewan S Titiyal, Manpreet Kaur, Cijin P Jose, Ruchita Falera, Ashutosh Kinkar, Lalit Ms Bageshwar
Purpose: To compare toric intraocular lens (IOL) alignment assisted by image-guided surgery or manual marking methods and its impact on visual quality. Patients and methods: This prospective comparative study enrolled 80 eyes with cataract and astigmatism ≥1.5 D to undergo phacoemulsification with toric IOL alignment by manual marking method using bubble marker (group I, n=40) or Callisto eye and Z align (group II, n=40). Postoperatively, accuracy of alignment and visual quality was assessed with a ray tracing aberrometer...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29713653/comparison-of-clinical-outcomes-between-femtosecond-laser-assisted-versus-conventional-phacoemulsification
#8
Robert Edward Ty Ang, Michelle Marie Salcedo Quinto, Emerson Marquez Cruz, Mark Christian Reyes Rivera, Gladness Henna Austria Martinez
Background: To compare femtosecond laser-assisted versus conventional phacoemulsification in terms of visual and refractive outcomes, cumulative dissipated energy, anterior chamber inflammation and endothelial cell loss. Methods: In this retrospective cohort study, records of eyes that underwent femtosecond laser-assisted cataract surgery (FLACS) or conventional phacoemulsification (CP) were reviewed. The Victus femtosecond laser (Bausch and Lomb, Germany) was used to carry out corneal incisions, anterior capsulotomy, and lens fragmentation in FLACS procedures...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29706515/puncture-and-pull-biomechanics-in-the-teeth-of-predatory-coelurosaurian-dinosaurs
#9
Angelica Torices, Ryan Wilkinson, Victoria M Arbour, Jose Ignacio Ruiz-Omeñaca, Philip J Currie
The teeth of putatively carnivorous dinosaurs are often blade-shaped with well-defined serrated cutting edges (Figure 1). These ziphodont teeth are often easily differentiated based on the morphology and density of the denticles [1, 2]. A tearing function has been proposed for theropod denticles in general [3], but the functional significance of denticle phenotypic variation has received less attention. In particular, the unusual hooked denticles found in troodontids suggest a different feeding strategy or diet compared to other small theropods...
April 23, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29703290/quality-of-images-with-toric-intraocular-lenses
#10
Daniele Tognetto, Alberto Armando Perrotta, Francesco Bauci, Silvia Rinaldi, Manlio Antonuccio, Felice Andrea Pellegrino, Gianfranco Fenu, George Stamatelatos, Noel Alpins
PURPOSE: To objectively evaluate the image quality obtained with toric intraocular lenses (IOLs) when misaligned from the intended axis. SETTING: University Eye Clinic and the Department of Industrial and Information Engineering, University of Trieste, Trieste, Italy. DESIGN: Experimental study. METHODS: An experimental optoelectronic test bench was created. It consisted of a high-resolution monitor to project target images and an artificial eye...
March 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29699518/comparison-of-two-techniques-for-toric-intraocular-lens-implantation-hydroimplantation-versus-ophthalmic-viscosurgical-devices
#11
Yueqin Chen, Qian Cao, Chunyan Xue, Zhenping Huang
BACKGROUND: To compare the results between hydroimplantation of a single-piece, acrylic foldable toric intraocular lens (IOLs) and conventional implantation using an ophthalmic viscosurgical device (OVD). METHODS: In this study, 60 eyes with cataract and preexisting regular corneal astigmatism of 1.0 to 3.0 diopters (D) underwent the implantation of the AcrySof toric IOLs (Alcon Laboratories, Inc.). The patients were randomly assigned to a conventional implantation technique with an OVD or a hydroimplantation technique...
April 24, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29692478/a-clinical-study-to-evaluate-the-results-after-toric-intraocular-lens-implantation-in-cases-of-corneal-astigmatism
#12
P S Moulick, V K Mohindra, V S Gurunadh, Parth Patel, Sandeep Gupta, M A Khan
Backgroud: Modern day cataract surgery aims at a spectacle free vision which becomes difficult in cases with pre-operative astigmatism more than 1.5 D. Implantation of toric intra-ocular lenses (IOL) after phacoemulsification in such eyes is one of the ways to counteract this problem. Methods: Thirty eyes with pre-operative astigmatism between 1.5 D and 4.5 D were implanted with toric IOLs following uneventful phaco-emulsification. The estimation of the axis of implantation of this toric IOL included calculating the surgically induced astigmatism (SIA) of the surgeon...
April 2018: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/29685740/-refractive-outcomes-and-precision-in-toric-intraocular-lens-alignment-using-an-automated-alignment-system
#13
T Cornut, D Touboul, S Rouglan, L Tellouck, J Tellouck, J-F Korobelnik, C Schweitzer
PURPOSE: To compare precision in toric intraocular lens (TIOL) alignment and refractive outcomes between an intraoperative automated digital marker system and the conventional manual-ink marking. MATERIALS AND METHODS: Prospective single center study including consecutive patients undergoing uneventful cataract surgery with corneal astigmatism greater than 1 diopter. Total corneal astigmatism was measured using a placido-dual Scheimpflug system (GalileiG4® , Ziemer)...
April 20, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29685737/low-power-versus-medium-power-toric-intraocular-lenses-in-cataract-surgery-about-110-eyes
#14
A Mairot, H El Chehab, E Agard, A Rezkallah, V Bouteleux, C Dot
PURPOSE: To analyze the refractive predictability of low-power and medium-power toric intraocular lenses (IOL) during cataract surgery. METHODS: A retrospective case series. Patients with low and moderate degrees of astigmatism were treated with either an Alcon AcrySof IQ toric monofocal lens (SN6AT2 or SN6AT3) or a Zeiss toric monofocal lens (709 MP + 1 D or 709 MP + 1.5 D). They were divided into two groups: group 1 with low-power toric IOL (n = 40, SN6AT2 and 709 MP + 1), group 2 with medium-power toric IOL (n = 70, SN6AT3 and 709 MP + 1...
April 20, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29675386/comparison-of-myopia-control-between-toric-and-spherical-periphery-design-orthokeratology-in-myopic-children-with-moderate-to-high-corneal-astigmatism
#15
Yu Zhang, Yue-Guo Chen
AIM: To compare clinical results between toric and spherical periphery design orthokeratology (ortho-k) in myopic children with moderate-to-high corneal astigmatism. METHODS: This retrospective study enrolled 62 eyes of 62 subjects using toric ortho-k lenses. These subjects were assigned to the toric group. Based on the one-to-one match principle (same age, proximate spherical equivalence and corneal astigmatism), 62 eyes of 62 subjects were enrolled and included in the spherical group...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29667423/suturing-technique-for-scleral-fixation-of-toric-intraocular-lens-in-the-traumatic-aphakic-eye-with-corneal-astigmatism
#16
Qintuo Pan, Zhengwei Yang, Xiaomeng Chen, Wenlong Wei, Zhisheng Ke, Ding Chen, Fang Huang, Junyong Cai, Zhenquan Zhao
PURPOSE: To describe the clinical outcomes of traumatic aphakic eyes with corneal astigmatism after using a novel technique for toric intraocular lens suture fixation. METHODS: In total, 12 eyes of 12 patients who underwent a new scleral suture fixation technique of one-piece toric intraocular lens (SN6AT series, Alcon Inc., TX, USA) were included in our retrospective study. Preoperative patient status, postoperative visual acuity and refractive outcomes, postoperative intraocular lens rotation, tilt, decentration, and complications were analyzed...
April 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29666120/true-rotational-stability-of-a-single-piece-hydrophobic-intraocular-lens
#17
Daniel Schartmüller, Sabine Schriefl, Luca Schwarzenbacher, Christina Leydolt, Rupert Menapace
BACKGROUND: To evaluate rotation and its influencing factors of an aspheric one-piece hydrophobic acrylic intraocular lens (IOL) Vivinex XY1 during 6 months after operation. METHODS: In this institutional trial, 122 eyes of 66 patients were implanted with a non-toric aspheric IOL Vivinex XY1 (Hoya Corporation, Tokyo, Japan). IOL alignment was assessed at the end of surgery, 1 hour, 1 week, 1 month and 6 months after implantation. Confounding factors such as axial length, presence of anterior fibrosis and randomised implantation in four different intended axes (0°, 45°, 90°, 135°) were evaluated...
April 17, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29644243/comparison-of-visual-refractive-and-aberration-measurements-of-intacs-versus-toric-icl-lens-implantation-a-four-year-follow-up
#18
Shahrokh Ramin, Azad Sangin Abadi, Farideh Doroodgar, Mehrdad Esmaeili, Faizollah Niazi, Sana Niazi, Cyrus Alinia, Yaser Golestani, Reza Taj Abadi
This study was performed to evaluate the visual, refractive, and aberration measurement results of 2 implants, including Intacs Intracorneal Ring Segments (ICRS) and phakic Toric Implantable Collamer Lens (TICL), in patients with moderate Keratoconus (KCN). In this retrospective cross-sectional study, 30 patients with KCN with a mean age of 29.83 years were included in 2 groups, including the Intacs Intracorneal Ring Segments (ICRS) group and the phakic Toric Implantable Collamer Lens (TICL) group. Preoperative data as well as 6-month, 1-, 2-, 3- and 4-year follow-up data after the operation were collected and analyzed with the SPSS software (ver...
2018: Medical Hypothesis, Discovery and Innovation in Ophthalmology
https://www.readbyqxmd.com/read/29607216/comparison-of-two-toric-iols-with-different-haptic-design-optical-quality-after-1-year
#19
Kata Miháltz, Michael Lasta, Michael Burgmüller, Pia Veronika Vécsei-Marlovits, Birgit Weingessel
Background: The purpose of this prospective, randomised study was to interocularly compare the visual performance after implantation of two different toric IOLs with different haptic design. Methods: 59 subjects with corneal astigmatism greater than 1.25 diopter (D) were implanted with an AT TORBI 709M IOL (Carl Zeiss Meditec AG) in one eye and with a Tecnis toric aspheric IOL (Abbot Medical Optics) in the other eye. Observation procedure was performed 12 months postoperatively...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29582820/surgical-technique-for-management-of-isolated-lenticular-coloboma-with-high-corneal-astigmatism
#20
Simar Rajan Singh, Sonam Yangzes, Rohit Gupta, Jagat Ram
We describe a surgical technique for the correction of isolated congenital lenticular coloboma associated with high corneal astigmatism. Transscleral fixation of the capsular bag with a single eyelet Cionni capsular tension ring was followed by in-the-bag implantation of a toric intraocular lens (IOL). This lead to complete correction of the lenticular defect and perfect alignment of the toric lens. In this case, the child attained an unaided distance visual acuity of 20/30 following amblyopia therapy and a well-aligned toric IOL at 12 months of follow-up...
April 2018: Indian Journal of Ophthalmology
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