• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Fundus autofluorescence in exudative age
Fundus autofluorescence in exudative age

... imaging of CNV with those of ocular fundus vascular angiography in 65 patients with AMD and found that the abnormal FAF areas in patients with early CNV were larger. Our results are almost the same as those of Dandekar: in patients with advanced CNV, the decreased FAF area, which only emerged in the ...
- Ingineeri.com
- Ingineeri.com

... Nerve fiber layer thickness can be evaluated with the "Fast RNFL Thickness" scan. This is a circular scan that requires the operator to place the circle so that the center of the circle is centered on the optic nerve head. ...
Ocular Syphilis: New Challenges of an Old Disease
Ocular Syphilis: New Challenges of an Old Disease

... What part of the eye is involved? • Every part of the eye can be involved during any stage of the infection • The vast majority of eye problems associated with syphilis are also associated with many other infectious and non-infectious diseases. – In other words, there are almost no eye findings tha ...
Learning Related Vision Problems - American Optometric Association
Learning Related Vision Problems - American Optometric Association

... thoughts and turning them into effective actions.15 Attention deficits with hyperactivity disorder (ADHD) or without it frequently are co-morbid with learning disabilities.16-18 Other associated traits, such as impulsiveness, low frustration tolerance, and difficulties with social interactions and s ...
Supraorbital n.
Supraorbital n.

... the incidence of dendritic and stromal keratitis as well as anterior uveitis.24,25 Valacyclovir (Valtrex) has higher bioavailability and has been shown to be equally safe and effective for the treatment of herpes zoster at a dosage of 1,000 mg three times daily for seven or 14 days.26 [Evidence leve ...
Q - Topcon
Q - Topcon

... Dr Walsh’s retinal disease screening study compared the non-mydriatic colour fundus image to the 3D-OCT in screening 284 eyes of 144 asymptomatic subjects over a 6 month period. It concluded that the OCT image was more sensitive at detecting epiretinal, retinal and subretinal lesions than the colo ...
Front cover - American Academy of Ophthalmology
Front cover - American Academy of Ophthalmology

... panels of knowledgeable health professionals. In some instances, such as when results of carefully conducted clinical trials are available, the data are particularly persuasive and provide clear guidance. In other instances, the panels have to rely on their collective judgment and evaluation of avai ...
CONSTELLATION® Vision System
CONSTELLATION® Vision System

... The benefits of using MIVS for PVR surgery are numerous. Using 23- and 25-gauge surgery allows for reduced traction on the detached retina and the closer proximity of the port to the tip allows for closer shaving of membranes at the vitreous base (Figures 3A-C). The cutting speeds on the CONSTELLATI ...
Visian ICL Product Information Visian ICL™ (Implantable Collamer
Visian ICL Product Information Visian ICL™ (Implantable Collamer

... Prior to surgery, the surgeon must provide prospective patients with a copy of the patient information brochure for this product and inform these patients of the possible benefits and complications associated with the use of this device. 1. Patients with higher degrees of myopia experience lower eff ...
ALBINISM
ALBINISM

... Albinism is a group of genetic conditions that results in little or no production of the pigment melanin. Most individuals with albinism are very sensitive to sun exposure and are at increased risk of developing skin cancer. All forms of albinism cause problems with the development and function of t ...
Guidelines for the Management of Amblyopia
Guidelines for the Management of Amblyopia

... Atropine is used in the treatment of amblyopia to blur vision in the normal eye. It has been shown to be as effective as patching in the treatment of moderate (20/40 to 20/100) amblyopia in children aged from 3 to 721, and to be well tolerated22. Residual visual defects in the amblyopic eye were com ...
Levodopa/carbidopa for childhood amblyopia.
Levodopa/carbidopa for childhood amblyopia.

... Each subject was instructed to have an empty stomach when they arrived at the Eye Clinic at Children's Hospital, Columbus, Ohio at 8:00 AM; however, fruit juice was allowed. In the current study we chose to measure visual acuity because in a pilot study2 it was found that levodopa/carbidopa had a gr ...
Scleral buckling biomaterials and implants for retinal detachment
Scleral buckling biomaterials and implants for retinal detachment

... by a cryoprobe or laser to achieve local scar formation in order to seal the hole and to maintain the neurosensory retina attached to the RPE. The location and depth of indentation can be monitored during surgery, and it is securely maintained in the desired place by suturing the buckle in situ. Nor ...
The Head and Neck The Head and Neck
The Head and Neck The Head and Neck

... The conjunctiva is a clear mucous membrane with two easily visible components. The bulbar conjunctiva covers most of the anterior eyeball, adhering loosely to the underlying tissue. It meets the cornea at the limbus. The palpebral conjunctiva lines the eyelids. The two parts of the conjunctiva merge ...
Diabetic macular oedema: a comparison of vitreous
Diabetic macular oedema: a comparison of vitreous

... Fluorescein angiography The filling phase of the fluorescein angiogram was recorded with a laser scanning ophthalmoscope (CLSO, Zeiss Germany) with 20 degree pictures in order to obtain maximum quality pictures of the foveal avascular zone. In all eyes examined (one eye in each patient) the diameter ...
as a PDF
as a PDF

... Rats were anesthetized and their pupils were dilated by local application of tropicamide in order to examine the retinal vasculature and verify proper eye perfusion before sacrifice. The cornea was gently applanated with a glass slide to visualize the retina, and the vasculature and optic nerve head ...
HIGHER STATE EDUCATIONAL INSTITUTION OF UKRAINE
HIGHER STATE EDUCATIONAL INSTITUTION OF UKRAINE

... a. The preliminary steps are the same as already described for fundus examination. b. The angle is visualized with the small dome-shaped gonioscopic mirror (if a three-mirror lens is being used). c. Initially the mirror is placed at the 12 o'clock position to visualize the interior angle and then r ...
Optic Disc Drusen
Optic Disc Drusen

... OCT of the same patient shows a decreased RNFL OU (D). Achromatic automated perimetry shows severe visual field loss in the patient’s right (E) and left (F) eyes. ...
Transverse Chromatic Aberration and Vision: Quantification and
Transverse Chromatic Aberration and Vision: Quantification and

... of the eye cannot form an image of a white point source in the same location for all wavelengths. This phenomenon is called chromatic aberration. Even though the visual system has evolved to handle, at least partly, the large chromatic aberration of the eye, the reduction in image quality is still i ...
Lens and retina regeneration
Lens and retina regeneration

... Lens regeneration has been studied for over a century, with the newt being the only adult animal that is capable of completely regenerating this complex organ [1,2]. The sheer unlimited regeneration potential of newt eyes following lens removal, even in older individuals, has established this system ...
Optical Treatment of Amblyopia in Astigmatic Children
Optical Treatment of Amblyopia in Astigmatic Children

... increase statistical power, particularly with regard to detecting subtle effects of previous treatment, cohort, or both on treatment effectiveness, separate analyses evaluating change from baseline to 6 weeks also were conducted because the sample size for this follow-up period was substantially gre ...
Guiding Practices in Early Childhood Vision Screening
Guiding Practices in Early Childhood Vision Screening

... each eye. Any condition that interferes with this development can cause reduced vision known as amblyopia or “lazy eye” which can be permanent if left untreated at an early age. ...
Normal Tension Glaucoma - New England College of Optometry
Normal Tension Glaucoma - New England College of Optometry

... indicated clinical abnormality. As early as the 1960s, researchers were aware that factors beyond IOP likely contributed to glaucoma development. For example, Armaly observed that a majority of individuals with IOP greater than 21 mm Hg did not develop glaucoma over the course of the 7 years,6 nor w ...
Complex visual hallucinations in the hemianopic field
Complex visual hallucinations in the hemianopic field

... border of the occipital and temporal regions and in the temporal lobe. Foerster'8 and Penfield and Perot'9 have provided extensive reports on these findings. The following study attempts initially to describe complex visual hallucinations in the hemianopic field and to define the pathogenesis of the ...
Retinally-induced aniseikonia
Retinally-induced aniseikonia

... software that can be assumed the predecessor of the Aniseikonia Inspector version 2. Aniseikonia was tested in the vertical and horizontal direction. In each direction aniseikonia was tested for visual field angles of 0.5 to 8 degrees. Patients: Three patients with different retinal conditions: an e ...
< 1 ... 3 4 5 6 7 8 9 10 11 ... 74 >

Retinitis pigmentosa



Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina. This form of retinal dystrophy manifests initial symptoms independent of age; thus, RP diagnosis occurs anywhere from early infancy to late adulthood. Patients in the early stages of RP first notice compromised peripheral and dim light vision due to the decline of the rod photoreceptors. The progressive rod degeneration is later followed by abnormalities in the adjacent retinal pigment epithelium (RPE) and the deterioration of cone photoreceptor cells. As peripheral vision becomes increasingly compromised, patients experience progressive ""tunnel vision"" and eventual blindness. Affected individuals may additionally experience defective light-dark adaptations, nyctalopia (night blindness), and the accumulation of bone spicules in the fundus (eye).
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report