510(k)
pre‑marketing process under section 510(k) of the US Federal Food, Drug and Cosmetic Act whereby manufacturers notify the FDA of their intent to market a medical device
age‑related macular degeneration or AMD
eye disease that progressively destroys the macula; AMD is the leading cause of severe vision loss in people over 50 in the Western world
angiographic
diagnostic test in which dye is injected and an image created to determine the blood flow in an area
anterior segment
the front third of the eye that includes the structures in front of the vitreous humour: the cornea, iris, ciliary body, and lens
binocular indirect ophthalmoscope or BIO
an instrument designed to visualize the interior of the eye, with the instrument at arm’s length from the subject’s eye and the observer viewing an inverted image through a convex lens located between patient and instrument
cataract
a clouding that develops in the lens of the eye due to the effects of aging, varying in degree from slight to complete opacity and obstructing the passage of light
CE
Conformité Européene, a product marking applying to products regulated by the European Commission’s health, safety and environmental protection legislation, which indicates that a manufacturer has conformed with all the obligations required and is allowed to freely distribute the product
choroid
a collection of blood vessels in the rear of the eye which feed the retinal sensory layer with nutrients and oxygen
diabetes
a chronic health condition where the body is unable to produce insulin and break down glucose in the blood
diabetic retinopathy
a consequence of unmanaged blood sugar levels in a person with diabetes whereby the retinal blood vessels are damaged causing destruction of the retina itself
dilation (mydrisis)
widening the pupil permits the retina to be examined for signs of disease, to do this drops are placed into the eye to relax the muscles of the iris
direct ophthalmoscope
an ophthalmoscope that produces an upright, or unreversed, image of approximately 15 times magnification
ellipsoidal mirror
a reflecting surface formed to the shape of a concave three dimensional ellipse that has the property of two focal points
FDA
US Food and Drug Administration
fluorescein angiography
a procedure allowing the blood vessels at the back of the eye to be photographed as a fluorescent dye is injected into the patient’s bloodstream
fovea
located at the center of the macula which is responsible for is responsible for sharp central vision
fundus
the interior posterior surface of the eyeball which includes the retina and the macula
fundus camera
conventional device derived from practitioner photography that is used to photograph small areas of the fundus
glaucoma
disorder of the eye, characterized by increased pressure within the eyeball, resulting in damage to the optic nerve and retinal nerve fibers with resulting loss of vision
macula
highly sensitive part of the retina responsible for detailed central vision
ophthalmologist
a medically qualified specialist of eye surgery and pathology
ophthalmoscope
an instrument for examining the interior structure of the eye, especially the retina
optician
a professional in respect of which these are two variants: dispensing optician – a provider of glasses and contact lenses; ophthalmic optician – a person qualified to perform eye examinations and prescribe eye wear
optic nerve
the nerve responsible for transmitting visual information from the retina to the brain
optometrist
a primary level eye care provider who performs eye examinations and prescribes eye wear
P200™
the P200™ Scanning Laser Ophthalmoscope supplied by Optos that delivers the optomap Retinal Examination
P200C™
the P200C™ Scanning Laser Ophthalmoscope supplied by Optos that delivers the optomap Retinal Examination and additional capabilities
P200MA™
the P200MA™ Scanning Laser Ophthalmoscope supplied by Optos that delivers the optomap Retinal Examination and fluorescein angiography capabilities
pathology
the manifestations of disease
posterior pole
the rear hemisphere from the central vertical equator of the eye
primary level care
the point in the health care system that is responsible for the detection of health problems
retina
light sensitive nerve tissue in the eye that coverts light into electrical impulses for transmission to the brain via the retinal nerve fiber layer and the optic nerve
retinal detachment
separation of the retina from its attachments to the back of the eyeball
retinal hemorrhage
pathology characterized by abnormal bleeding of the blood vessels in the retina, the membrane in the back of the eye
retinal hole/break
small defects in the peripheral retina often caused by the separation of the vitreous from the retina, these can lead to a larger retinal detachment
scanning laser ophthalmoscopes
a device that uses reflected laser light scanned into the eye analyse the retina
secondary level care
that part of the health care system that diagnoses health problems and is often (but not always) concerned with defining treatment plans
single image capture
a term used by Optos to discriminate a single retinal image (optomap) from a sequence of retinal images used for instance in fluorescein angiography (optomap fa)
slit lamp biomiscroscope
an instrument that combines a microscope with special lights that allows a practitioner to view the front of the eye and the retina (with the additional lens)
SLO
scanning laser ophthalmoscope
virtual point scan
a term used by the company to define the effect created by the patented system that gives rise to wide field of view created by the P200™ instrument – it conveys the effect of being equivalent to positioning a scanning system inside the patient’s eye
vitreous humor
the clear, gel‑like substance that fills the eyeball behind the lens