|Refractive Index||1.56/ 1.61 /1.67|
Shell design, power change from center to edge ,
UV420 Blue block function, protect eyes from Ipad, TV, computer and Phone.
Super Hydrophobic coating, help Children to clean the lens more easy every day.
Anti-virus coating can order for RX prescription lens, help your child to use eyes in healthy way.
A large portion of what children learn and experience occurs through their eyes.1 If a young child's visual system does not perform optimally, this can negatively affect their development.
It is essential that myopic children in particular get the best optical support.
Indeed, the prevalence of myopia progression is becoming a serious problem, especially in Asia: almost 90% of young people develop myopia before the age of 20.
Moreover, this is a global trend. In 2050, nearly 50% of the world’s population may be myopic.
To address this problem Hongchen has developed the most comprehensive myopia management spectacle lens portfolio, specially designed for children aged 6 to 12.
Myopia control eyeglasses lenses. It is an innovative spectacle lens for myopia control, and designed for teenagers under 18. It uses three core technologies to control myopia progression, and provides clear vision and myopic defocus simultaneously at all viewing distances.
Myopia defocus control technology is the answer.
Well from the pictures above you can find -- it can change the way light focuses on the retina between the central and peripheral retinal areas. Peripheral defocus theory suggests that this designs work at controlling myopia because they create that all important peripheral myopic defocus, interrupting the feedback loop for the eye to continue lengthening that is our bane in glasses and single vision lens wear.
Without adjustment when parallel rays enter the eye, the focus falls
in front of the retina.
●Myopia is when the eye adjusts to
a resting state down, after parallel rays are
refracted by the eye The resulting focal point is in front of
the retina. through Studies have shown that more than
80% of children with myopia are Caused by elongation of the eye axis.
●Axial myopia: The axial length of the eye grows, causing the retina
The membrane is moved backward,
after being refracted by the
refractive system of the human eye
light can only fall in front of the
retina and cannot see Clear things in the distance.
Our sales tools
Can show customers how to see the lens design.
the Left one is Shell design for Myopia lens
the right one is normal single vision lens.
Easy to show customers the difference for customers.
1. Suitable for children and teenagers under 14 years old
2. Children's glasses must undergo mydriatic optometry, and the diopter of
the mydriatic optometry shall prevail
3. During the optometry process, the eye position and adjustment function
must be checked, and the prescription should be adjusted according to the
adjustment function and eye position
4. Children with excessive accommodation and esotropia should not wear
defocus lenses (only 7% of patients with esotropia and myopia)
5. Defocus lenses must be fitted under proper correction, not undercorrection and over-correction
6. When fitting defocus lenses, you should choose a suitable frame
(preferably S-shaped adjustable nose pads), and process and assemble
according to the pupil height.
7. Frame width ≥ 45mm, frame height ≥ 30mm, and the amount of
displacement as much as possible ≤ 4mm
8. The lens must remain 12 mm in front of the eyes, with an 8-10 degree
forward tilt angle
9. Defocus lenses must be worn for a long time, regardless of any luminosity,
far or near
1. Diopter detection and distinguishing
between left and right eyes.
2. During processing, the optical center is
mainly based on measured optics.
3. Wear it after processing. If there is a
deviation between the optical center and
the pupil reflection point, the frame
should be adjusted.
4. After the frame is adjusted, the
processing of the mark is carried out.
How Blue Light Reducing Lenses Can Help
Blue light reducing lenses are created using a patented pigment that is added directly to the lens before the casting process. That means the blue light reducing material is part of the entire lens material, not just a tint or coating. This patented process allows blue light reducing lenses to filter a higher amount of both blue light and UV light.
1.56 hmc lens packing:
envelops packing (For choice):
1)standard white envelops
2)OEM with customer's LOGO, have MOQ requirement
cartons: standard cartons:50CM*45CM*33CM(Every carton can include around 500 pairs lens,21KG/CARTON)