eyeCare Glossary, [MY TITLE KEYWORDS HERE]

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Glossary of visual and optical terminology:

Filter: 5 A B C D E F G H I J K L M N O P Q R S T U V W Y Z Show All

5 a day	For optimum health the UK government ...	More >>
Abbe Value	A way to measure chromatic aberration in lenses named after the s...	More >>
ADD	Please see Addition. ...	More >>
Addition	If present, the ADD value may be written anywhere on your prescri...	More >>
Adjustable nose pads	Most metal, rimless and semi-rimless frames have adjustable nose ...	More >>
Adjustments	When you order glasses from eyeBuddy we will set up your frame so...	More >>
Advanced	Some people, because of the complex nature of their prescription,...	More >>
Age-related Macular Degeneration	...	More >>
Amblyopia	Is the technical term for "Lazy eye"....	More >>
Anti-Reflection coating	Eyebuddy recommends an anti-reflection coating because they impro...	More >>
Astigmatism	People with astigmatism will have blurred vision at all distances...	More >>
Axis	This will be a number between 0 and 180 degrees. If you have a nu...	More >>
Back vertex distance	This is the distance between the back surface of the lens and the...	More >>
Base curve	The curve on the back surface of the contact lens usually called ...	More >>
Basic	Almost all prescriptions take a basic form, including a sphere (w...	More >>
BCOR	The back curve optical radius of a contact lens is mat...	More >>
Bifocals	Bifocal literally means “two focuses” and there are many types of...	More >>
Blepharitis	What is Blepharitis?Blepharitis is when the rims of the...	More >>
Blue Blocker	Lenses that block blue light. Blue light is scattered by the atm...	More >>
Blue Blur	A condition of unclear vision due to the blue light waves being s...	More >>
Bridge size	The width between the lenses on an eyeglass/sunglass frame. Manuf...	More >>
C segment bifocals	C segment bifocals are similar to a D segment bifocal, however ra...	More >>
Cataracts	A clouding of the lens of the eye that can lead to blindness. If...	More >>
Cellulose Acetate	Cellulose Acetate is a material commonly used for the manufacture...	More >>
Clear lens extraction	Awaiting content. ...	More >>
Clip-on	A small device with sunglass lenses that hooks onto your prescrip...	More >>
Color-Coated Lenses	Lenses that have a color coating applied to the outside of the le...	More >>
Contact lens optician	A contact lens optician is a specialist dispensing optician who h...	More >>
Contact lens prescription	Your contact lens prescription includes the power and fitting det...	More >>
Contrast	The difference in brightness between the light and dark parts of ...	More >>
Cornea	The clear curved surface at the front of the eye which give...	More >>
Corridor length	This refers to the distance between the distance portion and the ...	More >>
CR-39	See: Standard “CR39” 1.5 index optical plastic. ...	More >>
Cylinder	This should be a number between -4 to +4, in 0.25 increments. T...	More >>
D segment bifocals	In D segment bifocals as the name suggests the reading area...	More >>
D28 bifocals	This is the most commonly dispensed bifocal. The reading s...	More >>
D28 bifocals	This is the most commonly dispensed bifocal. The reading segment...	More >>
D35 bifocals	The most commonly dispensed wide segment bifocal....	More >>
Designer Eyewear	Eyebuddy holds stocks of the best selling models of the ...	More >>
Diabetes	There are a number of types of diabetes, however the most common,...	More >>
Diabetic Eye Disease	Diabetes is the biggest cause of blindness in people of working a...	More >>
Diameter	The Diameter for a contact lens, or opthalmic lens, is the ...	More >>
Diet	A balanced diet including 5 portions of fruit and vegetable...	More >>
Dietary supplements for eye health	If you do not eat five portions of fruit and vegetables eac...	More >>
Dispensing advice	Once you have had an eye exam you have a wide choice of options t...	More >>
Dispensing optician	A dispensing optician, having studied for a minimum of three year...	More >>
Distance	A distance prescription is for general purpose. If you are...	More >>
Distance between lenses (DBL)	DBL is commonly known as the bridge size on a frame. Imagi...	More >>
Dry eye	Dry eye is a condition where your eyes do not make enough...	More >>
Enhanced eye examination	An enhanced eye exam includes retinal photography as an opt...	More >>
Eye examination	Your personal eye test is an important part of your regular...	More >>
Eye size	Not as you might think anything to do with your eye as such...	More >>
Fundus Photography	The fundus is another name for the back of the eye includin...	More >>
General Optical Council	All qualified opticians (optometrists and dispensing optici...	More >>
Glasses lenses	Glasses lenses or spectacle lenses are available in 1.523, ...	More >>
Glaucoma	The term glaucoma refers to a group of eye conditions where...	More >>
Guarantees Warranties and Eyebuddy	All Eyebuddy glasses are covered by a 7-day no quibble exch...	More >>
Higher refractive index	Lens materials come in refractive indices from 1.49 up to 1...	More >>
Hobbies	Many of us invest considerably in our favourite hobbies and...	More >>
Hypermetropia or long sightedness	Hypermetropia or long sightedness (also known as hyperopia ...	More >>
Intermediate	In our fifties presbyopia advances such that our near glass...	More >>
Intermediate addition	From early childhood as we get older we gradually lose the ...	More >>
Jaundice	Yellowing of the skin and eyes caused by high levels of t...	More >>
Jump	As the eye crosses from the distance portion of a bifocal l...	More >>
Keratoconus	Literally conical cornea - is a hereditary degenerative con...	More >>
Lasek	– awaiting content ...	More >>
Laser	Light Amplification by Stimulated Emission of Radiation is ...	More >>
Lasik	– awaiting content ...	More >>
Lazy Eye	Also known as Amblyopia. Reduced vision in one or both eye...	More >>
Lifestyle needs	Your optometrist or dispensing optician will ask you about ...	More >>
Long-sightedness	see hypermetropia ...	More >>
Lutein	Lutein is an antioxidant that is found throughout the bod...	More >>
Macula	The Macula is the central area of the retina that is rich in co...	More >>
Macushield	Buy Macushield here: Macushield 30, Macushield 90, Macushield 180...	More >>
Measure your existing glasses	Ordering glasses online can appear daunting but with a few ...	More >>
Meso-zeaxanthin	Meso-zeaxanthin Mz is the 3rd macula pigment compotent and ...	More >>
Multifocal	– simply means many focuses. Multifocal spectacles include...	More >>
Myopia (short sight, near sight)	People who are short-sighted can usually see close up very ...	More >>
Near	In our forties we develop presbyopia. Our eyes lose the ab...	More >>
Neovascularisation	Development of new blood vessels as an abnormal response to...	More >>
NHS Eye Care	Currently about 70% of people in England and Wales, and eve...	More >>
NHS vouchers	Many of the people who are entitled to an NHS eye test are ...	More >>
Non-prescription Glasses	Many people wear glasses without a prescription to change t...	More >>
Non-prescription sunglasses	Be sure to get sunglasses that comply with British Standard...	More >>
Nutrition and the eye	For healthy eyes be sure to eat a balanced diet rich in antioxi...	More >>
Optical Advisor	Most of the people employed in an optician’s are optical ad...	More >>
Optical Consumer Complaints Service	If you have a complaint about an optician or optician’s bus...	More >>
Opticians’ own brand contact lenses	If you currently buy your contact lenses from an optician a...	More >>
Optometrist	An optometrist is qualified to test sight and examine eyes ...	More >>
Pale cosmetic tints	A tint that absorbs less than 20% of visible light (transmi...	More >>
PD	The Pupillary Distance (PD) value i...	More >>
Photochromic Lenses	Photochromic lenses react to bright light by going darker, ...	More >>
Polarising lenses	A layer of special crystals enable polarising lenses to b...	More >>
Presbyopia	This term rather unflatteringly comes from the Greek meanin...	More >>
Prescription	If you are under forty your prescription will probably cons...	More >>
Prism	The Prism value corrects any muscle imbalance or a squint. If you...	More >>
PRK	– awaiting content...	More >>
Progressive Lenses	See varifocals ...	More >>
Pupillary Distance	Your pupillary dis...	More >>
Quality	Eyebuddy gets all the glasses, sunglasses, contact lenses a...	More >>
Reading area	Reading area refers to the part of a spectacle lens that is...	More >>
Refractive surgery	Refers to a range of procedures, usually involving speciali...	More >>
Reglaze	Many people wonder if we can put new lenses in their existi...	More >>
Replacement schedule	The recommended period after which a contact lens should be...	More >>
Rimless	Rimless spectacles do not have a frame; rather the lenses a...	More >>
RK	Awaiting content...	More >>
Scratch resistant coating	All lenses can scratch if they are not looked after, howeve...	More >>
Semi-rimless	Semi-rimless glasses, also known as supra spectacles, do no...	More >>
Short sight	– see Myopia (short sight, near sight) ...	More >>
Smoking and eye health	Smokers are between 4 and 8 times more likely to go blind t...	More >>
Spectacle lenses	All Eyebuddy spectacle lenses are subject to strict quality...	More >>
Sphere	see spherical power ...	More >>
Spherical Power	The spherical power measures the strength of a lens is denoted by...	More >>
Standard “CR39” 1.5 index optical plastic	CR39 has been available since the Second World War but didn...	More >>
Sunglass tints	Virtually all our frames and lenses can be made into prescr...	More >>
Tinted lenses	Eyebuddy offers a wide variety of pale cosmetic tints and also da...	More >>
Toric	Toric is a term given to special contact lenses that correc...	More >>
Transitions	Transitions are the best selling photochromic lens availabl...	More >>
Trifocals	Trifocals offer an alternative to varifocals for people who...	More >>
UV protection	UV protection is important as UV ca...	More >>
Vacuum-Coated Lenses	Lenses that have a colour, mirror or anti-reflection coatin...	More >>
Varifocals	Varifocals or progressive lenses offer clear vision at all ...	More >>
Vision	Vision is a measurement of a person’s ability to see clearl...	More >>
Visual acuity	Visual acuity is the measurement of vision with any correct...	More >>
Wearing schedule	Not to be confused with replacement schedule, wearing sched...	More >>
Working Distance	This is the distance that you view objects (e.g., a compute...	More >>
Yellow spot	Alternative biological term for the macula lutea, the centr...	More >>
Zeaxanthin	Zeaxanthin is the carotenoid pigment substance (carotenoid)...	More >>
Zyl	A contraction of Zylonite an American trade name for Cellul...	More >>