A trial lens set, also known as a trial lens kit or trial frame set, is a collection of lenses used by optometrists and ophthalmologists during eye examinations to determine a patient's prescription for corrective lenses, such as glasses or contact lenses. These sets typically contain a variety of lenses with different optical powers and specifications, allowing the eye care professional to conduct a comprehensive refraction test and find the most suitable prescription for the patient. Lens Types: Trial lens sets typically include spherical lenses, cylindrical lenses, and prism lenses. Spherical lenses correct for nearsightedness (myopia) or farsightedness (hyperopia), while cylindrical lenses correct for astigmatism. Prism lenses are used to correct alignment and binocular vision issues.
Lens Powers: The lenses in a trial lens set come in a range of powers, usually measured in diopters (D), which indicate the strength of the lens. Positive (+) powers are used to correct hyperopia, while negative (-) powers correct myopia. Cylinder lenses also have a cylindrical power component to correct astigmatism.
Lens Diameter and Thickness: Trial lenses come in various diameters and thicknesses. Thicker lenses may have higher powers or prisms, while smaller diameters are used for more precise testing.
Lens Material: Trial lenses are typically made of high-quality optical glass or plastic materials that provide accurate refractive properties and durability.
Mounting System: Trial lenses are often mounted in metal or plastic rims that fit into a trial frame. The trial frame allows the eye care professional to hold and position the lenses in front of the patient's eyes during the refraction test.
Accessories: Some trial lens sets may include additional accessories, such as lens holders, lens cleaning tools, and a carrying case for convenient storage and transportation.
During a refraction test, the eye care professional uses the trial lens set along with a phoropter or trial frame to present different lens combinations to the patient and determine the best prescription for optimal vision correction.
Hello there,
Get in touch with us for world class prescription lenses, opthalmic lenses, colour lenses, sunglasses, safety glasses...we have whole lot of products to offer
This is ARC optical lenses with emi coating blocks negatives lights from all led displays like mobiles laptops t.v
helps to stops further increase of power
both side coating
best of all lenses
