Category Archives: Glossary

Progressive lenses Progressive lenses – Multifocal lenses with a seamless gradient of varying optical powers, allowing clear vision at different distances without the visible lines found in bifocal or trifocal lenses. Progressive lenses are often used to correct presbyopia, providing a more natural visual experience for activities ranging from driving to reading.

Prism lenses Prism lenses – Specialised lenses used to correct double vision (diplopia) by altering the way light enters the eye, helping to align the images seen by each eye into a single, clear image. Prism lenses are often prescribed for people with certain eye alignment disorders, such as strabismus.

Polarised lenses Polarised lenses – Sunglass lenses that filter out horizontal light waves, reducing glare from reflective surfaces like water, snow and roads. Polarised lenses improve visual comfort, reduce eye strain and enhance contrast, making them ideal for outdoor activities such as driving, fishing and skiing.

Photochromic lenses Photochromic lenses – Lenses that automatically darken when exposed to sunlight and return to clear when indoors. This technology provides convenience by eliminating the need to switch between prescription glasses and sunglasses. Photochromic lenses are available in a variety of lens materials and can also offer UV protection.

Optometrist Optometrist – A healthcare professional who provides primary vision care, including conducting eye exams and working out the refractive power of the eye, diagnosing vision problems, prescribing glasses and contact lenses and managing certain eye conditions. Optometrists typically have a Doctor of Optometry (OD) degree and are trained to detect signs of more serious …

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Ophthalmologist Ophthalmologist – A medical doctor specialising in eye care, capable of diagnosing and treating eye diseases, performing eye surgeries and prescribing glasses and contact lenses. Ophthalmologists undergo extensive training, including medical school, residency and often further specialisation in specific areas of eye care.

Phoropter Phoropter – An instrument used by eye care professionals during an eye exam to measure refractive error and determine the best prescription for glasses or contact lenses. The phoropter contains multiple lenses that can be adjusted to fine-tune your vision, helping to achieve the clearest and most comfortable correction possible.

Presbyopia Presbyopia – An age-related condition where the eye’s lens loses its flexibility, making it difficult to focus on close objects. Typically starting in your 40s, presbyopia is a natural part of aging and is commonly corrected with reading glasses, bifocals, or progressive lenses.

Nose bridge Nose bridge – The part of the glasses frame that sits on your nose, connecting the two lenses. A well-fitting nose bridge distributes the weight of the glasses evenly, ensuring comfort and stability. Different styles of nose bridges are available to accommodate various nose shapes and sizes.

Night vision glasses Night vision glasses – Glasses designed to improve visibility in low-light conditions, such as during nighttime driving. These glasses often feature anti-reflective coatings and yellow-tinted lenses to reduce glare from headlights and streetlights, enhancing contrast and making it easier to see in the dark.