Trial Lens Set

Product Description

This tool is designed to help and demonstrate how the new Lens can block the 400nm ~ 420nm range of High Energy Visible light in addition to UV Light.

Description

Optical Lens Set (Illuminated) is made of high PLastic quality lenses with group portability of lens. It contains Plano-convex, plano-concave, bi-convex and bi-conclave. These Trial Lens Sets are used to check the effective power of eye and give an exact report for judging the eye sight.

Technical Specification

Coated Type:PVC Coated

Types:Basic Trial Set

Color:Red Black

Material:Plastic

Rim Types:Plastic

Number Of Lenses:180

Haptic Shape:Circle

Product Description

Usage

For progressive multifocal lenses optometry. Contains lenses ADD +1.00 D ~ 3.50D, 0.25D per step.

Progressive area of short channel (12mm) design.

Method of use

1. Coordinate with standard 232 or 266 type of trial lens set, preferably with a metal ring (ID38mm) trial lens set to use, with adjustable IPD trial frame to try it on.

2. Identification mark

① horizontal reference line: temporary markers into a mirror mounted horizontal line corresponds to detect the correct axial astigmatism lenses.

② invisible permanently marked: marked with a temporary restoration, it’s 34mm between two distances.

③ far measurement zone: Test distance lens power

④ near measuring zones: Test near distance lens photometric and ADD.

⑤ glasses cross mark: corresponding pupil height of glasses，it usually in 2mm above of point of the prism.

⑥ ADD mark: To photometric of lenses.

⑦ prism reference point: It’s 2/3 of ADD.

3. Examination of near diopter

① cross-grid method:

Place ± 0.50DC cross-cylinder in front, axis in the negative 90 and positive axis 180, If vertical lines and horizontal lines appear as the same clear or the same vague, no plus ADD. Otherwise,plus ADD until they are the same clear.

② empirical method: (Age -30) × 0.1 = ADD

ADD of adolescents generally is +1.50 DS.

4. When the Optometry program is finished, select the appropriate ADD value lenses and insert into the trial frame, the handle is located on the above of horizon line of both lens frame. The horizontal scale must coincide with 0 ° ~ 180 ° horizontal logo of the trial frame.

5. Adjust IPD of the trial frame to the exact location.

6. Inspect visual effects of middle and near distance, and change trial lenses to the best visual performance. Please don’t move when take the trial frame. Can check folded newspaper in the near and far distance, to feel whether it’s clear. Also should know how to change sight by turning head. Turning eyes to check far, middle and near distance. Turning around eyes to pay attention to the existence of the deformation zone. And tell customers to turn their heads but not turn their eyes when checking the objects in right and left.

7. In order to ensure proper glasses distance, progressive lenses should be placed in the inner layer of trial frame.

Product Description

 These are manufactured using high grade raw material and progressive technology in compliance with set international standards. The products offered by us are available in various specifications as per the variegated demands of our clients. These are examined by our skilled professionals against various parameters of quality in order to ensure their flawlessness.

1. This trial lens set provides the full complement of 268 lenses packaged in anattractive briefcase. Metal rings. Sphere lens in pairs 160. Cylinder lens in pairs 80 nos.Prism lens 12 nos.Auxiliary Lenses 16 nos.

2.This trial lens set provides the full complement of 268 lenses OF 25 mm lens size packaged in anattractive briefcase. Metal rings. Sphere lens in pairs 160. Cylinder lens in pairs 80 nos.Prism lens 12 nos.Auxiliary Lenses 16 nos.

3. This trial lens set provides the full complement of 268 lenses OF 38 mm lens size packaged in anattractive briefcase. Metal rings. Sphere lens in pairs 160. Cylinder lens in pairs 80 nos.Prism lens 12 nos.Auxiliary Lenses 16 nos.S

Product Description
One: UV-400 ultraviolent-resistance test First, put the standard lens on the outlet of UV light, adjust the knob to make the value on the LCD screen same with the value of the standard lens. For the accuracy, you have to calibrate the value with the standard lens. Put the target lens on the outlet of UV light, and then the data displayed on the LCD screen is just the value of ultraviolent. The closer to 400 nm, the better the lens is. Two: anti-radiation test Makes the protruding part of lens in touch with the black anti-radiation testing point; If the lens is radiation-resistant, bird calls are given out, or is not radiation-resistant.