- Mamiya EYE CORRECTION ...eBay.com$39.99
- Mamiya RB / RZ Prism...eBay.com$39.00
- Mamiya RB / RZ Prism...eBay.com$31.20$39.00
- UNUSED Mamiya EYE ...eBay.com$19.54
- Mamiya RB / RZ Prism...eBay.com$39.00
- EXC+5 USED Mamiya Diopter...eBay.com$44.90
- Yantra Optical Prismbar...eBay.com$165.00
- Mamiya RB / RZ Prism...eBay.com$39.00
- Mamiya C330 S / C220 F /...eBay.com$33.00
- MAMIYA Prism Finder Eye ...eBay.com$49.50
- MAMIYA Prism Finder Eye ...US eBay$49.50
Ads
related to: eye prism correction lenses for sale
Search results
Results from the WOW.Com Content Network
Purpose. extent of binocular functions. Bagolini striated glasses test, or BSGT, is a subjective clinical test to detect the presence or extent of binocular functions and is generally performed by an optometrist or orthoptist or ophthalmologist (medical/surgical eye doctor). It is mainly used in strabismus clinics.
Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and ...
The history of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design to succeed for photographic cameras. The first patent was granted in 1861, and the first cameras were produced in 1884, but while elegantly simple in concept, they were very ...
Wedge prism. The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from ...
Prism lighting. A prism transom bends light passing through the upper part of the window upwards. Prism lighting is the use of prisms to improve the distribution of light in a space. It is usually used to distribute daylight, and is a form of anidolic lighting . Prism lighting was popular from its introduction in the 1890s through to the 1930s ...
Some cases of convergence insufficiency are successfully managed by prescription of eyeglasses, sometimes with therapeutic prisms. Pencil push-ups therapy is performed at home. The patient brings a pencil slowly to within 2–3 cm (0.79–1.18 in) of the eye just above the nose about fifteen minutes per day five times per week.