NO LINE BIFOCALS LENS (PROGRESSIVE MULTIFOCAL LENS) IS A LENS THAT

Upper part is used to look far
The middle is used for medium distance
The bottom is used to look at the near

Computer glasses blue light protective is really matter?

What is blue light?

Blue light is a short-wave high-energy light having a wavelength between 400 nm and 480 nm.

The blue light in this wavelength will increase the amount of toxin in the macular area of the eye, which seriously threatens the health of our fundus.

Blu-ray-induced blind eye disease, the current effective solution is to film screens or lenses.

The anti-blue film technology is very mature and low in cost, which can effectively prevent blue light from penetrating.

Not all blue lights are harmful, what is really harmful is blue light having a wavelength within 400 to 440.
Actually, blue light between 480 and 500 nanometers has a function of adjusting biological rhythm, sleep, mood, memory, etc

Do Blue light Filter Glasses Really Work?

Possible major hazard for blue light 

What exactly is blue light? 

What Are Blue Light Blocking Glasses And Do They really Work?

How do Blue light filter glasses works

How Do Blue light Blocking Glasses Work?

What is blue light?

8 hazards of blue light

1)  Cause the damage of retinal pigment epithelial cells:

2)  visual fatigue: due to the short wavelength of blue light, the focus point does not fall in the center of the retina, but a position closer to the front of the retina.

3) The blue light cause sleep disorder

4)  Causing glare

5)  Since short-wavelength light has a relatively high energy, the incidence of fine particles in the air is high, which is the main cause of glare.

6)  Visual fatigue

7)  The blurring of vision.

8)  Blu-ray is the main cause of digital visual fatigue (DEF).

Do we really need blue light blocking glasses?

Light has a profound effect on our sleep and waking

Humans are diurnal, which means we evolved to sleep at night. 

Light exposure can have profound effects on sleep even circadian rhythm disorders. 

When the body’s internal biological comes out of synch with the external environment, it can develop into a circadian rhythm sleep disorder.

The Art of Selecting Frames for Strong Prescriptions

“Fashion is an instant language” Miuccia Prada

Understanding High Prescriptions

Selecting the small size, high index lenses and anti-reflective coatings

Choosing the Right Frames Materials

Frame Styles for Face Shape

Who does not fit for progressive glasses?

1. Any Older Patients who have the probability to fall down
2. Individuals with abnormal body posture or eye positions who cannot move their freely
3. Special occupations with visual demands that don't align with the design of progressive lenses
4. Anisometropia in the eyes
5. High refractive errors
6. History of difficulty adapting to glasses
7. Insufficient corrected vision

Having one pair of glasses with progressive lenses is generally considered the more convenient option, as it allows you to see clearly at all distances (near, intermediate, and far) without constantly switching between multiple pairs of glasses.

Progressive lenses may not be suitable for everyone, especially in cases where individuals have certain visual conditions or preferences. Some specific scenarios where progressive lenses might not be recommended.