There are a wide variety of ophthalmic spectacle lenses on the market, with each type having unique features and benefits.
Spectacle lenses are specially ground surface polished optical quality refractive powered lenses, which allow for accurate focus of transmitted light rays through the lens onto the retina. At Eugene Botha Optometrists, we are very proud to be able to offer a comprehensive diversified range of high-quality spectacle lenses to our patients.
THE LENS CATEGORIES INCLUDE:
Single vision lenses
Single vision lenses, as the name implies, will only focus
light for a single distance away from the eye. These lenses are
typically used to correct distance errors like myopia (near-sightedness) or hyperopia (farsightedness), and refractive errors like astigmatism
(non-spherical corneas).
Single vision lenses are also prescribed for people who complain
of “my arms are getting too short”. This is the condition known as Presbyopia (age-related farsightedness) and manifests at or around
the age of forty. These lenses are used to provide clear vision at a predetermined near working distance, as in computer glasses.
Accommodative support lenses
These spectacle lenses are designed specifically for visual fatigue.
You may be a candidate for using this type of lens if after extensive
daily periods of intermediate or near vision lifestyle activities, such as study and computer use, the eyes may blur, feel tired or you may develop a mild headache.
Office lenses
These are specifically developed for the administrative or office worker. It is important to note that this lens is still a reading lens and will not focus clearly on objects in the distance.
Blue control lenses
These lenses are prescribed specifically to enhance vision and to protect the eyes from harmful radiation emitted from computer screens. Research has indicated the long term use of these lenses may protect the macular sensitive portion of the retina.
Bifocal lenses
Bifocal lenses have two power viewing portions. An upper distance
focus portion and a lower near focus portion immediately underneath. These lenses are divided by a distinct and noticeable dividing line.
The field of view is not restricted.
Multifocal lenses
Multifocal lenses have the distance viewing power in the very upper portion of the lens, which progressively increases downward, to the bottom of the lens, allowing maximum viewing power for objects
closest to the eye. There is no distinct and noticeable dividing line between the distance viewing power and the near viewing power. Technically, these sophisticated lenses allow for excellent overall
clarity of vision, yet an adaptation time is often required as there is a compromise to the lower field of view.
Unique to the practice
As a recognised Seiko speciality practice, E K Botha optometrists use the latest Seiko speciality dispensing software via iPad. The software enables the accurate measurements required to best marry the lens design, frame, and facial features.