Multifocal technique
Multifocal Technique
The Multifocal Technique (pronunciation: mul-ti-fo-cal tech-nique) is a method used in ophthalmology and optometry to correct presbyopia and other refractive errors.
Etymology
The term "multifocal" is derived from the Latin words "multi" meaning many, and "focalis" meaning of a hearth. In this context, it refers to the multiple focal points that this technique addresses.
Definition
The Multifocal Technique involves the use of multifocal lenses, which have multiple zones of different powers to provide clear vision at all distances. These lenses are designed to help individuals who have difficulty focusing on near objects, a condition known as presbyopia.
Related Terms
- Presbyopia: A condition that affects the eye's ability to focus on near objects.
- Refractive Errors: Errors in the eye's ability to focus light correctly on the retina.
- Multifocal Lenses: Lenses that have multiple zones of different powers to provide clear vision at all distances.
Application
The Multifocal Technique is commonly used in the fitting of contact lenses and the design of intraocular lenses for cataract surgery. It is also used in refractive surgery procedures such as LASIK and PRK.
Advantages and Disadvantages
The main advantage of the Multifocal Technique is that it can provide clear vision at all distances, reducing or eliminating the need for glasses or contact lenses. However, some people may experience side effects such as glare, halos around lights, or reduced contrast sensitivity.
See Also
External links
- Medical encyclopedia article on Multifocal technique
- Wikipedia's article - Multifocal technique
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