Loading...
  • spectral
  • In vertebrates, a variety of adaptations have arisen to refine the spectral sensitivity of cone photoreceptors and improve color vision. (frontiersin.org)
  • Spectral transmission of ocular tissue from 6 New Zealand White (NZW) and six Dutch-Belted rabbit eyes were evaluated in this study. (arvojournals.org)
  • Each tissue specimen was mounted at the entrance aperture of an integrating sphere(RSA-BE-65, LabSphere, North Sutton, NH) to measure total diffuse spectral transmittance with a Beckman DU-800 spectrophotometer at wavelengths between 200nm and 1100nm. (arvojournals.org)
  • The most significant difference in spectral transmission, as large as 4-fold, was seen in the iris tissue due to pigmentation from 400-1100nm. (arvojournals.org)
  • discomfort
  • There is no doubt that the introduction of LASIK (Laser-Assisted In Situ Keratomileusis) procedures was an unprecedented advancement in eye care, offering people an opportunity to have clearer vision without the inconvenience or the discomfort of glasses or contacts. (oshmanlaw.com)
  • Cataract surgery in the U.S. and in other economically advanced countries around the world is generally performed using Phacoemulsification, a technique that allows for "no-stitch" surgery, which allows for rapid healing and recovery of vision, with little discomfort. (womensvoicesforchange.org)
  • contact lenses
  • Give your patients the best you can using the latest technologies in contact lenses to optimize vision so that they can enjoy the high definition world around them. (clspectrum.com)
  • Assessing the protective effect of UV blocking contact lenses on human ocular tissues including methodology, measurement techniques and clinical endpoints. (clspectrum.com)
  • LASIK is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses by correcting vision impairments. (oshmanlaw.com)
  • ophthalmology
  • As the latest example of possible solar radiation-induced aging of a human tissue, this is perhaps one of the most exciting new directions in ophthalmology and human biology research. (springer.com)
  • injuries
  • Chemical or thermal injuries, ultraviolet (UV) and ionizing radiations, severe microbial infection, surgeries and cryotherapy of the limbal region, or conditions like Stevens-Johnson syndrome and aniridia can lead to limbal stem cell deficiency (LSCD). (molvis.org)
  • occur
  • Ocular rosacea can occur in people who have the skin condition rosacea , as well as those who don't have this condition. (healthline.com)
  • genes
  • The extent to which the giraffe's unique visual capacity and its difference with okapi is reflected by changes in their vision genes is not understood. (peerj.com)
  • The recent availability of giraffe and okapi genomes provided opportunity to identify giraffe and okapi vision genes. (peerj.com)
  • Quantification of selection pressure was performed by a combination of branch-site tests of positive selection and clade models of selection divergence through comparing giraffe and okapi vision genes and orthologous sequences from other mammals. (peerj.com)
  • We hypothesize that requirement for long distance vision associated with predation and communication with conspecifics likely played an important role in the adaptive pressure on giraffe vision genes. (peerj.com)
  • Additionally, previous studies have shown that not all vision genes have been lost in subterranean mammals, but it is unclear whether they are under relaxed selection and will ultimately be lost, are maintained due to pleiotropy or if natural selection is favoring the retention of the eye and certain critical underlying loci. (deepdyve.com)
  • Another important question concerns the fate of the vision genes that appear intact in subterranean species. (deepdyve.com)
  • eyes
  • Nordic Naturals Omega Vision combines DHA-rich fish oil with key nutrients that have been shown to protect the eyes and support healthy vision. (cardiologistinnewyork.com)
  • DHA is more concentrated in the eye tissue than in any other part of the body, and is vital to the healthy structure and function of the eyes. (cardiologistinnewyork.com)
  • Firstly, it helps explain how birds evolved to have such large eyes, relative to their body mass, without a dense network of ocular capillaries for blood delivery. (eurekalert.org)
  • Usually the anesthesia is topical (using eyedrops or anesthetic gel on the ocular surface) without any needles being used around the eyes for injections. (womensvoicesforchange.org)
  • photoreceptors
  • These data provide evidence that the light-organ tissues harboring the symbionts serve as extraocular photoreceptors, with the potential to perceive directly the bioluminescence produced by their bacterial partners. (scienceintheclassroom.org)
  • gene
  • Regressed but Not Gone: Patterns of Vision Gene Loss and Retention in Subterranean Mammals A, Emerling, Christopher 2018-09-01 00:00:00 Abstract Regressive evolution involves the degradation of formerly useful traits as organisms invade novel ecological niches. (deepdyve.com)
  • Other dim light-adapted vertebrates with normal ocular anatomy, such as nocturnal and aquatic species, also demonstrate evidence of visual gene loss, but the absence of comparative studies has led to the untested assumption that subterranean mammals are special in the degree of this genomic regression. (deepdyve.com)
  • Here I report that vision gene loss in subterranean mammals tends to be more extensive in quantity and differs in distribution from other dim light-adapted mammals, although some committed subterranean mammals demonstrate significant overlap with nocturnal microphthalmic species. (deepdyve.com)
  • 2016). Studies that have reported vision gene loss in subterranean species have generally been limited in comparisons with other taxa, meaning that it remains unclear if such mammals are exceptional in their degree and distribution of vision gene loss. (deepdyve.com)
  • iris
  • Light transmission of sclera and iris tissue, to our knowledge, has not been previously presented in the literature. (arvojournals.org)
  • Less than approximately, 10% of diffuse UV radiant energy was transmitted through the sclera and iris tissues in the rabbit model. (arvojournals.org)
  • cause
  • Other dystrophies may cause repeated episodes of pain without leading to permanent loss of vision. (visioncarespecialists.com)
  • Foods with a high glycemic index, those that cause a rapid rise and drop of blood sugar such as rice, white bread, and pasta are linked with higher incidence of progressive vision loss from AMD, as well as the severity over the course of the disease. (eyeconx.net)
  • loss of vis
  • Over time, the retinal cells in the macular area begin to die, slowly leading to loss of vision which is permanent and irreversible. (eyeconx.net)
  • abnormalities
  • Low blood pressure, abnormally low intracranial pressure, autoimmune phenomena, sleep apnea, sleeping with the pillow or one's knuckles pressed against the eye, an abnormally hard or soft lamina cribrosa , inherited or acquired abnormalities of the connective tissue of the lamina cribrosa, primary ganglion cell degeneration, and other as yet unconsidered possibilities. (womenfitness.net)
  • surface disease
  • Ironically, most patients with ocular surface disease have a healthy posterior segment with otherwise favourable visual prognosis. (bmj.com)
  • topical
  • Topical corticosteroids, with their associated side effects, are the mainstay of current treatments for patients with vision threatening disease. (bmj.com)
  • results
  • Distortion of the incident laser beam by ocular aberrations cannot fully explain the discrepancy between the in vivo measurements with no aberration correction and the in vitro results. (spiedigitallibrary.org)