What do patients with glaucoma see: a novel iPad app to improve glaucoma patient awareness of visual field loss

The British Journal of Ophthalmology
Meghal GagraniDeepta Ghate

Abstract

Glaucoma patients with peripheral vision loss have in the past subjectively described their field loss as 'blurred' or 'no vision compromise'. We developed an iPad app for patients to self-characterise perception within areas of glaucomatous visual field loss. Twelve glaucoma patients with visual acuity ≥20/40 in each eye, stable and reliable Humphrey Visual Field (HVF) over 2 years were enrolled. An iPad app (held at 33 cm) allowed subjects to modify 'blur' or 'dimness' to match their perception of a 2×2 m wall-mounted poster at 1 m distance. Subjects fixated at the centre of the poster (spanning 45° of field from centre). The output was degree of blur/dim: normal, mild and severe noted on the iPad image at the 54 retinal loci tested by the HVF 24-2 and was compared to threshold sensitivity values at these loci. Monocular (Right eye (OD), left eye (OS)) HVF responses were used to calculate an integrated binocular (OU) visual field index (VFI). All three data sets were analysed separately. 36 HVF and iPad responses from 12 subjects (mean age 71±8.2y) were analysed. The mean VFI was 77% OD, 76% OS, 83% OU. The most common iPad response reported was normal followed by blur. No subject reported dim response. The mean HVF sensitivi...Continue Reading

References

Apr 1, 1996·Current Opinion in Neurobiology·C D Gilbert
Apr 16, 2002·Brain Injury : [BI]·Amanda PortJudith Charlton
May 27, 2003·Investigative Ophthalmology & Visual Science·Brenda W GillespieUNKNOWN CIGTS (Collaborative Initial Glaucoma Treatment Study) Study Group
Aug 21, 2003·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Salomon Yves CohenJean-François LeGargasson
Jul 22, 2005·Journal of Neurophysiology·Holger AwaterFrank Tong
Nov 24, 2005·Investigative Ophthalmology & Visual Science·Gerald McGwinCynthia Owsley
Dec 13, 2006·Archives of Ophthalmology·Michael F Marmor
Apr 3, 2007·American Journal of Ophthalmology·Roberta McKean-CowdinUNKNOWN Los Angeles Latino Eye Study Group
Dec 15, 2007·American Journal of Ophthalmology·Boel Bengtsson, Anders Heijl
Nov 26, 2008·Investigative Ophthalmology & Visual Science·Michael D Crossland, Peter J Bex
Sep 18, 2010·Investigative Ophthalmology & Visual Science·Richard V AbadiJonathan S Murphy
Mar 31, 2011·Investigative Ophthalmology & Visual Science·Sachiko TanabeKazuo Tsubota
Dec 3, 2011·The British Journal of Ophthalmology·Donatella Pascolini, Silvio Paolo Mariotti
Feb 19, 2013·Ophthalmology·David P CrabbDavid F Garway-Heath
Jul 6, 2014·The American Journal of the Medical Sciences·Cindy X HuGeorge L Spaeth
Dec 30, 2014·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Trishal Boodhna, David P Crabb
May 12, 2016·Investigative Ophthalmology & Visual Science·Priya GuptaDavid S Friedman
Jun 10, 2016·JAMA Ophthalmology·Saif BaigFelipe A Medeiros

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.