Fixation Stability during Binocular Viewing in Patients with Age-Related Macular Degeneration

2011 ◽  
Vol 52 (3) ◽  
pp. 1887 ◽  
Author(s):  
Luminita Tarita-Nistor ◽  
Michael H. Brent ◽  
Martin J. Steinbach ◽  
Esther G. González
Keyword(s):  
Macular Degeneration ◽  
Binocular Viewing ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Fixation Stability

scholarly journals Vision Rehabilitation in Patients with Age-related Macular Degeneration

2014 ◽  
Vol 3 ◽  
pp. RPO.S12364 ◽  
Author(s):  
Filippo M. Amore ◽  
Stefania Fortini ◽  
Valeria Silvestri ◽  
Marco Sulfaro ◽  
Alessia Pacifici ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Macular Degeneration ◽  
Visual Stimulation ◽  
Low Vision ◽  
Reading Speed ◽  
Age Related Macular Degeneration ◽  
International Agency ◽  
Visual Rehabilitation ◽  
Age Related ◽  
Fixation Stability

Background The aim of this study was to investigate the rehabilitative process and visual rehabilitation outcomes in patients with central vision loss due to age-related macular degeneration (AMD). Methods Ninety-five subjects with AMD selected from the attendees of the National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of Low Vision Patients—International Agency for Prevention of Blindness—IAPB Italia Onlus, were evaluated for this retrospective study. Low vision examination included psychological counseling, best corrected visual acuity (BCVA), near visual acuity, Pelli-Robson contrast sensitivity, and fixation stability analysis. Once the clinical assessment was completed, patients attended a low-vision rehabilitative pathway based on visual stimulation, devices training and, if needed, psychological support. Required magnification and reading speed were also evaluated. Results For the whole sample, the mean BCVA of the better eye was 0.7 (±0.2) LogMAR and of the worse eye was 1 (±0.2) LogMAR. Restoring reading ability was the most important focus for the patients examined as it was requested by 85% of the whole sample. Mean power of optical magnifying aids for near activities was 10.6 (±9.1) positive spherical diopters. Mean reading speed for the whole sample was 33.1 (±18.2) words per minute (wpm) before visual rehabilitation sessions and increased to 55.2 (±33.1) wpm after visual rehabilitation path. To cope with distance difficulties, 78 distance refractive correction, 10 Galilean telescopes, and 7 Keplerian telescopes were prescribed. For intermediate distance activities, 22 compensation lenses and 10 Galilean telescopes were suggested. Moreover, PC magnifier softwares were prescribed to nine patients. Sixty-five polarized medical filters were prescribed to reduce glare of sunlight. Because of unstable fixation in their better eye (32.3% (±19.7) within 2° circle and 54.8% (±22.9) within 4° circle) and visual acuity < 1.2 LogMAR in the fellow eye, 38 subjects, before starting the devices training sessions, attended a bio-feedback rehabilitation session with flickering pattern stimulus. In these subjects, fixation stability increased significantly to 75.6 (±14.9) within 2° and 89.4 (±19.5) within 4° ( P < 0.05), respectively. Conclusions Attending a customized low-vision intervention based on a multidisciplinary approach seems to be effective for improving visual functions in AMD. Both optical/electronic magnifiers and specific visual stimulation program can enhance visual performances.

scholarly journals Changes in Fixation Stability with Time during Binocular and Monocular Viewing in Maculopathy

Vision ◽  
2018 ◽  
Vol 2 (4) ◽  
pp. 40
Author(s):  
Saba Samet ◽  
Esther González ◽  
Mark Mandelcorn ◽  
Michael Brent ◽  
Luminita Tarita-Nistor
Keyword(s):  
Macular Degeneration ◽  
Monocular Viewing ◽  
Age Related Macular Degeneration ◽  
Control Group ◽  
Fellow Eye ◽  
Age Related ◽  
Fixation Stability ◽  
Ellipse Area ◽  
Bivariate Contour Ellipse Area ◽  
Over Time

The purpose of this study was to examine changes in fixation stability over time during binocular and monocular viewing in patients with age-related macular degeneration (AMD). Seventeen patients with AMD and 17 controls were enrolled. Using an EyeLink eyetracker (SR Research Ltd., Mississauga, Ontario, Canada), fixation stability was recorded binocularly and monocularly with each eye for a duration of 15 s while the fellow eye was covered. Fixation stability was analyzed over 3 s intervals for each condition using a 68% bivariate contour ellipse area. Fixation stability did not change with time during binocular viewing for both groups, both monocular conditions for the control group, and monocular viewing with the better eye for the AMD group. However, during monocular viewing with the worse eye, the test of within-subject contrasts showed linear improvement in fixation stability with time (p = 0.016). In conclusion, in patients with AMD, monocular fixational control with the worse eye is poor, but improves with time.

scholarly journals Assessment of Fixation Stability in Wet Age Related Macular Degeneration Using Microperimetry before and after Intravitreal Anti-VEGF Injection

2020 ◽  
Vol 88 (3) ◽  
pp. 111-114
Author(s):  
ASMAA A.M. ATTYA, M.Sc.; IMAN M. EISSA, M.D. ◽  
OMAIMA Kh. EYADA, M.D.; ALI M. TAHA, M.D. ◽  
RIHAM S.H.M. ALLAM, M.D., F.R.C.S. Glasgow
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Anti Vegf ◽  
Age Related ◽  
Before And After ◽  
Fixation Stability

Fixation stability measurements in patients with neovascular age-related macular degeneration treated with ranibizumab

2013 ◽  
Vol 48 (5) ◽  
pp. 394-399 ◽  
Author(s):  
Pier Luigi Grenga ◽  
Serena Fragiotta ◽  
Alessandro Meduri ◽  
Stefano Lupo ◽  
Marco Marenco ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Fixation Stability ◽  
Stability Measurements

Fixation stability using central and pericentral fixation targets in patients with age-related macular degeneration

Ophthalmology ◽  
2004 ◽  
Vol 111 (12) ◽  
pp. 2265-2270 ◽  
Author(s):  
Caren Bellmann ◽  
Mary Feely ◽  
Michael D. Crossland ◽  
Stamatina A. Kabanarou ◽  
Gary S. Rubin
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Fixation Stability

Fixation stability using radial gratings in patients with age-related macular degeneration

2006 ◽  
Vol 41 (3) ◽  
pp. 333-339 ◽  
Author(s):  
Esther G. González ◽  
Joshua Teichman ◽  
Linda Lillakas ◽  
Samuel N. Markowitz ◽  
Martin J. Steinbach
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Fixation Stability

Age related macular degeneration (ARMD) – pathophysiological and clinical features and therapeutic concepts

2001 ◽  
Vol 58 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Ursula Körner-Stiefbold
Keyword(s):  
Macular Degeneration ◽  
Clinical Features ◽  
Altersbedingte Makuladegeneration ◽  
Age Related Macular Degeneration ◽  
Genetische Faktoren ◽  
Age Related ◽  
Therapeutic Concepts

Die altersbedingte Makuladegeneration (AMD) ist eine der häufigsten Ursachen für einen irreversiblen Visusverlust bei Patienten über 65 Jahre. Nahezu 30% der über 75-Jährigen sind von einer AMD betroffen. Trotz neuer Erkenntnisse in der Grundlagenforschung ist die Ätiologie, zu der auch genetische Faktoren gehören, noch nicht völlig geklärt. Aus diesem Grund sind die Behandlungsmöglichkeiten zum jetzigen Zeitpunkt noch limitiert, so dass man lediglich von Therapieansätzen sprechen kann. Die derzeit zur Verfügung stehenden Möglichkeiten wie medikamentöse, chirurgische und laser- und strahlentherapeutische Maßnahmen werden beschrieben.

Nutrition in Age-Related Macular Degeneration Survey

2018 ◽  
Author(s):  
Rebekah Stevens ◽  
Richard Cooke ◽  
Hannah Bartlett
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Age Related
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