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Macular pigment optical density

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https://www.readbyqxmd.com/read/29758035/changes-in-macular-pigment-optical-density-after-membrane-peeling
#1
Mario R Romano, Gilda Cennamo, Piergiacomo Grassi, Federica Sparnelli, Davide Allegrini, Giovanni Cennamo
INTRODUCTION: To highlight the differences in macular pigment optical density (MPOD) between eyes with vitreoretinal interface syndrome and healthy control eyes, to assess the changes in MPOD in eyes treated with macular peeling, to investigate the relationships between MPOD changes and measures of retinal sensitivity such as best corrected visual acuity (BCVA) and microperimetry. METHODS: In this cross-sectional comparative study, 30 eyes affected by idiopathic epiretinal membrane (iERM, 15eyes) or full-thickness macular hole (FTMH, 15eyes) were compared with 60 eyes from 30 healthy age-matched patients...
2018: PloS One
https://www.readbyqxmd.com/read/29745133/effect-of-intraocular-scattering-in-macular-pigment-optical-density-measurements
#2
Dimitrios Christaras, Alexandros Pennos, Harilaos Ginis, Pablo Artal
Fundus reflectometry is a common in-vivo, noninvasive method to estimate the macular pigment optical density (MPOD). The measured density, however, can be affected by the individual's intraocular scattering. Scattering causes a reduction in the contrast of the fundus image, which in turn leads to an underestimation of the measured density. Intraocular scattering was measured optically in a group of seven young, healthy subjects using the method of optical integration and was subsequently used to correctly estimate the MPOD from fundus images...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29686895/efficacy-of-diacetate-esters-of-macular-carotenoids-effect-of-supplementation-on-macular-pigment
#3
Richard A Bone, John T Landrum, Anirbaan Mukherjee
The accumulation of the carotenoids lutein, zeaxanthin, and mesozeaxanthin in the center of the human retina, and known as the macula lutea or macular pigment, is believed to protect the retina from age-related macular degeneration. Since the macular pigment is of dietary origin, supplements containing the relevant carotenoids are readily available. In this study, we compared the changes in macular pigment over a 24-week supplementation period for two groups of 24 subjects each assigned to either of two supplement formulations, 20 mg/day of lutein or 20 mg equivalent free carotenoids of a combination of diacetate esters of the macular carotenoids...
2018: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/29660599/dosage-dependent-reduction-of-macular-pigment-optical-density-in-female-breast-cancer-patients-receiving-tamoxifen-adjuvant-therapy
#4
I-Liang Lim, Angela Voon Pei Loo, Visvaraja Subrayan, Tsung Fei Khang, Mee Hoong See, Adlinda Alip, Nur Aishah Mohd Taib
It is now increasingly common for breast cancer patients to receive adjuvant tamoxifen therapy for a period of up to 10 years. As survival rate increases, managing tamoxifen ocular toxicities is important for patients' quality of life. Macular pigments in photoreceptor cells protect against free radical damage, which can cause macular degeneration. By reducing macular pigment concentration, tamoxifen may increase the risk of macular degeneration. Here, we compared macular pigment optical density (MPOD) and central macular thickness between breast cancer patients on tamoxifen adjuvant therapy (n = 70), and a control group (n = 72)...
April 13, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29651346/choriocapillaris-loss-in-advanced-age-related-macular-degeneration
#5
REVIEW
Carlos A Moreira-Neto, Eric M Moult, James G Fujimoto, Nadia K Waheed, Daniela Ferrara
The purpose of this review is to summarize the current knowledge on choriocapillaris loss in advanced age macular degeneration (AMD). Several histopathological studies in animal models and human eyes had showed that the choriocapillaris density decreases with age. However, the role of choriocapillaris loss is still unclear in AMD and its advanced forms, either choroidal neovascularization (CNV) or geographic atrophy (GA). Some authors have hypothesized that choriocapillaris loss might precede overt retinal pigment epithelium atrophy...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29610850/plasma-concentrations-of-lutein-and-zeaxanthin-macular-pigment-optical-density-and-their-associations-with-cognitive-performances-among-older-adults
#6
Soufiane Ajana, Daniela Weber, Catherine Helmer, Bénédicte M Merle, Wolfgang Stuetz, Jean-François Dartigues, Marie-Bénédicte Rougier, Jean-François Korobelnik, Tilman Grune, Cécile Delcourt, Catherine Féart
Purpose: We investigated the cross-sectional associations between macular pigment optical density (MPOD), plasma lutein (L), and zeaxanthin (Z) concentrations and cognitive function in 184 older adults of the 3-City-Bordeaux cohort. Methods: MPOD was measured using the two-wavelength autofluorescence method with a modified scanning laser ophthalmoscope. Plasma L and Z (L+Z) concentrations were determined by high-performance liquid chromatography and were considered either crude or expressed as a ratio of the concentration of plasma lipids (total cholesterol [TC] + triglycerides [TG])...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29594609/reliability-of-a-commercially-available-heterochromatic-flicker-photometer-the-mps2-for-measuring-the-macular-pigment-optical-density-of-a-japanese-population
#7
Akira Obana, Yuko Gohto, Takatoshi Moriyama, Takahiko Seto, Hiroyuki Sasano, Shigetoshi Okazaki
PURPOSE: The macular pigment optical density (MPOD) of a Japanese population was measured using a commercially based heterochromatic flicker photometer, the Macular Pigment Screener (MPS2). The objective of the study was to evaluate the accuracy and test-retest reliability of the MPS2 in Asian pigmented eyes. STUDY DESIGN: Experimental study to validate the medical instrument in humans. METHODS: Twenty-four healthy Japanese participants with no systemic or eye diseases (men: 13, women: 11; mean [SD] age 38...
March 28, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29576617/what-do-we-know-about-the-macular-pigment-in-amd-the-past-the-present-and-the-future
#8
REVIEW
Ranganathan Arunkumar, Charles M Calvo, Christopher D Conrady, Paul S Bernstein
Carotenoids are lipophilic isoprenoid pigments with a common C40 H56 core chemical structure that are naturally synthesized by many plants, algae, bacteria, and fungi. Humans and animals cannot synthesize carotenoids de novo and must obtain them solely through dietary sources. Among the more than 750 carotenoids in nature, only lutein, zeaxanthin, meso-zeaxanthin, and their oxidative metabolites selectively accumulate in the foveal region of the retina where they are collectively referred to as the macular pigment (MP) of the macula lutea...
March 26, 2018: Eye
https://www.readbyqxmd.com/read/29570611/macular-xanthophylls-are-related-to-intellectual-ability-among-adults-with-overweight-and-obesity
#9
Naiman A Khan, Anne M Walk, Caitlyn G Edwards, Alicia R Jones, Corinne N Cannavale, Sharon V Thompson, Ginger E Reeser, Hannah D Holscher
Excess adiposity or obesity has been inversely related to cognitive function and macular xanthophyll status. However, whether the neuroprotective effects of macular xanthophylls on cognitive function are independent of excess adiposity is unclear. We investigated the relationship between macular xanthophylls and intellectual ability among adults ( N = 114) between 25 and 45 years with overweight and obesity (≥25 kg/m²). Dual energy X-ray absorptiometry and heterochromatic flicker photometry were used to assess whole body adiposity (%Fat) and macular pigment optical density (MPOD), respectively...
March 23, 2018: Nutrients
https://www.readbyqxmd.com/read/29567794/early-oct-angiography-changes-of-type-1-cnv-in-exudative-amd-treated-with-anti-vegf
#10
Elisabetta Pilotto, Luisa Frizziero, Anna Rita Daniele, Enrica Convento, Evelyn Longhin, Francesca Guidolin, Raffaele Parrozzani, Fabiano Cavarzeran, Edoardo Midena
AIMS: To investigate, with optical coherence tomography angiography (OCTA), short-term changes of type 1 choroidal neovascularisation (CNV), secondary to exudative age-related macular degeneration, after anti-vascular endothelial growth factor (VEGF) treatment. METHODS: Patients affected by type 1 CNV treated with intravitreal anti-VEGF were consecutively enrolled. All patients underwent OCTA examination before and 48 hours after anti-VEGF treatment. Quantitative and qualitative vascular and morphological macular changes were evaluated...
March 22, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29477964/visual-function-metrics-in-early-and-intermediate-dry-age-related-macular-degeneration-for-use-as-clinical-trial-endpoints
#11
Kimberly J Cocce, Sandra S Stinnett, Ulrich F O Luhmann, Lejla Vajzovic, Anupama Horne, Stefanie G Schuman, Cynthia A Toth, Scott W Cousins, Eleonora M Lad
PURPOSE: To evaluate and quantify visual function metrics to be used as endpoints of age-related macular degeneration (AMD) stages and visual acuity (VA) loss in patients with early and intermediate AMD. DESIGN: Cross-sectional analysis of baseline data from a prospective study. METHODS: One hundred and one patients were enrolled at Duke Eye Center: 80 patients with early AMD (Age-Related Eye Disease Study [AREDS] stage 2 [n = 33] and intermediate stage 3 [n = 47]) and 21 age-matched, normal controls...
May 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29451849/a-comprehensive-review-of-eggs-choline-and-lutein-on-cognition-across-the-life-span
#12
Taylor C Wallace
In 2030, one in five Americans will be older than 65 years, and with that an increase in the number of individuals who experience loss in cognitive capacity is to be expected. At the same time, nutrition within the first 1000 days postconception has been suggested to strongly influence cognitive outcomes across the life-span in humans. Eggs are a primary source of both choline and the xanthophyll carotenoid lutein in the western diet, and both have been suggested to influence cognitive function in humans...
May 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29430299/serum-carotenoids-and-macular-pigment-optical-density-in-patients-with-intestinal-resections-and-healthy-subjects-an-exploratory-study
#13
Jane N Eriksen, August P Prahm, Mads Krüger Falk, Eva Arrigoni, Palle B Jeppesen, Michael Larsen, Lars O Dragsted
Reduced absorption capacity in patients with intestinal resections (IR) could result in malabsorption of fat-soluble components like carotenoids, which are of clinical interest in relation to visual health. In this case cohort, we investigated the association between IR and serum lutein, zeaxanthin, β-carotene and macular pigment optical density, when compared with healthy controls. Ten patients with IR and twelve healthy controls were included in the study. Baseline characteristics were comparable between groups, except for higher serum TAG ( P < 0·05) and shorter bowel length ( P < 0·0001) in the group with IR...
2018: Journal of Nutritional Science
https://www.readbyqxmd.com/read/29387455/macular-pigment-optical-density-in-a-brazilian-sample
#14
Letícia Pinto Coelho Jorge, Carlos Eduardo Gonçalves Pereira, Eduardo Jorge, Marcos Pereira de Ávila
Background: To evaluate macular pigment optical density (MPOD) and to identify its determinants in a sample of Brazilian individuals. Methods: This was a cross-sectional study. One hundred three healthy individuals had both eyes photographed using a Visucam 500 digital fundus camera (Carl Zeiss Meditec, Jena, Germany) in combination with the MPOD module. Four variables were obtained: maximum MPOD, mean MPOD, MPOD volume, and MPOD area. Demographic data and information on lifestyle habits were also collected...
2018: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/29376234/multimodal-imaging-in-diabetic-macular-edema
#15
REVIEW
Dhariana Acón, Lihteh Wu
Throughout ophthalmic history it has been shown that progress has gone hand in hand with technological breakthroughs. In the past, fluorescein angiography and fundus photographs were the most commonly used imaging modalities in the management of diabetic macular edema (DME). Today, despite the moderate correlation between macular thickness and functional outcomes, spectral domain optical coherence tomography (SD-OCT) has become the DME workhorse in clinical practice. Several SD-OCT biomarkers have been looked at including presence of epiretinal membrane, vitreomacular adhesion, disorganization of the inner retinal layers, central macular thickness, integrity of the ellipsoid layer, and subretinal fluid, among others...
January 2018: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/29357284/reliability-of-a-two-wavelength-autofluorescence-technique-by-heidelberg-spectralis-to-measure-macular-pigment-optical-density-in-asian-subjects
#16
Akira Obana, Werner Gellermann, Yuko Gohto, Takahiko Seto, Hiroyuki Sasano, Masaki Tanito, Shigetoshi Okazaki
This study evaluates the accuracy of an objective two-wavelength fundus autofluorescence technique for the purpose of measuring the macular pigment optical density (MPOD) in Asian pigmented eyes. Potential differences between MPOD values obtained via autofluorescence technique and subjective heterochromatic photometry (HFP) were examined. Inter-examiner reproducibility between three examiners and test-retest reliability over five time points were also explored. Subjects were 27 healthy Japanese volunteers aged 24 to 58 (mean ± standard deviation, 40...
March 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29228252/retinal-reflectivity-measurement-for-cone-impairment-estimation-and-visual-assessment-after-diabetic-macular-edema-resolution-recover-dme
#17
Benjamin Guyon, Emeric Elphege, Mathieu Flores, Anne-Sophie Gauthier, Bernard Delbosc, Maher Saleh
Purpose: Photoreceptor loss has been suspected of being involved in incomplete visual recovery after diabetic macular edema (DME) resolution. Recent studies have shown that cone density in the perifoveal area could be estimated by in vivo measurements of the outer retinal reflectivity on optical coherence tomography (OCT). The main objective of this study was to assess the photoreceptor layer reflectivity after DME resolution and to determine its relationship with final visual acuity (VA)...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29161349/relation-of-retinal-and-serum-lutein-and-zeaxanthin-to-white-matter-integrity-in-older-adults-a-diffusion-tensor-imaging-study
#18
Catherine M Mewborn, Douglas P Terry, Lisa M Renzi-Hammond, Billy R Hammond, L Stephen Miller
Objective: Lutein (L) and zeaxanthin (Z) are phytonutrients that accumulate in human brain tissue and positively impact cognition. Given their antioxidant and anti-inflammatory properties and their role in stabilizing cell membranes, L&Z may relate to measures of white matter integrity (WMI). Method: The current study tested the relation of retinal (macular pigment optical density/MPOD) and blood serum concentrations of L&Z to WMI in community-dwelling older adults (n = 54) using diffusion tensor imaging (DTI)...
November 17, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29135938/effects-of-a-lutein-and-zeaxanthin-intervention-on-cognitive-function-a-randomized-double-masked-placebo-controlled-trial-of-younger-healthy-adults
#19
Lisa M Renzi-Hammond, Emily R Bovier, Laura M Fletcher, L Stephen Miller, Catherine M Mewborn, Cutter A Lindbergh, Jeffrey H Baxter, Billy R Hammond
Background: Past studies have suggested that higher lutein (L) and zeaxanthin (Z) levels in serum and in the central nervous system (as quantified by measuring macular pigment optical density, MPOD) are related to improved cognitive function in older adults. Very few studies have addressed the issue of xanthophylls and cognitive function in younger adults, and no controlled trials have been conducted to date to determine whether or not supplementation with L + Z can change cognitive function in this population...
November 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29065425/multimodal-evaluation-of-the-fellow-eye-of-patients-with-retinal-angiomatous-proliferation
#20
Amélia Martins, Cláudia Farinha, Miguel Raimundo, Marta Lopes, Ana Rita Santos, Pedro Melo, Marco Marques, João Pedro Marques, Patrícia Barreto, Maria Luz Cachulo, Catarina Neves, José Cunha-Vaz, Rufino Silva
INTRODUCTION: We conducted a multimodal, cross-sectional evaluation. METHODS: Eyes were divided into 4 study groups: controls, early/intermediate age-related macular degeneration (AMD), fellow eyes of retinal angiomatous proliferation (RAP), and RAP eyes. Patients were evaluated with spectral-domain optical coherence tomography (OCT), enhanced depth imaging-OCT, and OCT angiography (OCTA). OCTA images were processed to generate maps of the vessel density and perfusion density of the superficial and deep retinal layers (SRL and DRL) and the choriocapillaris level (CL)...
2018: Ophthalmic Research
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