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ZEISS – Vision Correction Technology

PRESBYOND® LBV
Presbyopia Correction

LBV
PRESBYOND®
Laser Blend Vision

  • Takes only about 4-5 minutes
  • Customized treatment plan
  • Achieve excellent vision at all distances
  • Suits most presbyopia patients
  • Safe and without any discomfort

Combination of ZEISS CRS-Master®, MEL® 90 excimer laser and VisuMax® femtosecond laser system

What is Presbyopia

  • Illustration of a presbyopia eye

    Illustration of a presbyopia eye

    As we grow older, bodily functions like our eyesight start to decline. Presbyopia is a common eye condition that affects many people over the age of 40. Thereby, the eye starts to lose its ability to shift focus, causing difficulty when focusing on close objects and blurriness when reading.

  • Illustration of a normal eye

    Illustration of a normal eye

    The ability of the ciliary muscle to change the shape of the crystalline lens of normal young people is good. When the looking at object that is far away, the lens will be flattened and maximizes the focal length; when the object is near, the lens will be rounded and minimizes the focal length. Allowing objects to be clearly focused on the retina.

Traditional presbyopia treatment methods

  • 01 Traditional reading glasses correction

    Reading glasses are usually one of the first options patients with presbyopia consider, and it is also the most common treatment. They are especially suited for people with normal vision who never had to wear glasses or contact lenses before. Reading glasses can help correct close-up vision problems and are typically worn only during activities such as reading, sewing and other tasks that require near vision. You will need to put on and take off repeatedly for adjusting your focus on different distant objects, which is very inconvenient.

  • 02 Multifocal intraocular lens correction

    Multifocal intraocular lens replacement is the treatment of cataracts and presbyopia, but it may cause hazy or shadowy vision after surgery. It feels like having astigmatism, the visual quality is less stable, and it is less suitable for people who are younger or have no cataracts. Non-cataract intraocular lens correction is more suitable for elderly people, and there is no data to prove the safety of surgery. In some cases, 7~31% intraocular lens may become cloudy after I year of surgery, 2.2% have retinal detachment, and some have intraocular lens shifts.

  • 03 Using traditional laser treatment to correct presbyopia

    The traditional presbyopic multifocal laser is a multifocal diffraction cut in the cornea, which is used to change the shape of the cornea to cause multifocal effect. It is easy to have overlapping images after surgery, feels like having astigmatism. The visual quality is relatively unstable, the middle distance vision is blurred and may cause nighttime glare after surgery.

  • 04 Monovision laser correction

    Monovision laser correction is to use the laser to make the dominant eye to have 0.0 D for distance vision and leaving the non-dominant eye for about 0.5D-2.0D of myopia for near vision. The brain must adapt to seeing two images corrected for different. In the postoperative visual, for some people, the the ability of their brain to adjust is poorer, the middle distance is easy to be blurred, the stereo-acuity is greatly reduced, and the visual quality is not good.

01Traditional reading glasses correction

Reading glasses are usually one of the first options patients with presbyopia consider, and it is also the most common treatment. They are especially suited for people with normal vision who never had to wear glasses or contact lenses before. Reading glasses can help correct close-up vision problems and are typically worn only during activities such as reading, sewing and other tasks that require near vision. You will need to put on and take off repeatedly for adjusting your focus on different distant objects, which is very inconvenient.

02Multifocal intraocular lens correction

Multifocal intraocular lens replacement is the treatment of cataracts and presbyopia, but it may cause hazy or shadowy vision after surgery. It feels like having astigmatism, the visual quality is less stable, and it is less suitable for people who are younger or have no cataracts. Non-cataract intraocular lens correction is more suitable for elderly people, and there is no data to prove the safety of surgery. In some cases, 7~31% intraocular lens may become cloudy after I year of surgery, 2.2% have retinal detachment, and some have intraocular lens shifts.

03Using traditional laser treatment to correct presbyopia

The traditional presbyopic multifocal laser is a multifocal diffraction cut in the cornea, which is used to change the shape of the cornea to cause multifocal effect. It is easy to have overlapping images after surgery, feels like having astigmatism. The visual quality is relatively unstable, the middle distance vision is blurred and may cause nighttime glare after surgery.

04Monovision laser correction

Monovision laser correction is to use the laser to make the dominant eye to have 0.0 D for distance vision and leaving the non-dominant eye for about 0.5D-2.0D of myopia for near vision. The brain must adapt to seeing two images corrected for different. In the postoperative visual, for some people, the the ability of their brain to adjust is poorer, the middle distance is easy to be blurred, the stereo-acuity is greatly reduced, and the visual quality is not good.

PRESBYOND® LBV Presbyopia

  • Conventional Monovision

    According to scientific studies, only about 59 – 67 % of them can successfully merge the two images. Patients frequently experience an area of compromised vision in the intermediate range – the Blur Zone. In addition to blurred images, it can also cause other side effects, such as reduced contrast sensitivity, chromatic aberration, stereoscopic perception, and partial dizziness. Those patients that are able to tolerate the procedure often require some time to adjust to their new eyesight.

  • PRESBYOND®LBV

    PRESBYOND® LBV corrects the distance vision of the dominant eye to almost flat, while the non-dominant eye is corrected to slightly biased myopia, approximately -1.5 D (150 degrees). This micro-monocular strategy is progressively enhanced by decisive differences: the wavefront-optimized cutting profile increases the depth of field of each eye, creating a continuous refractive power gradient for the entire corneal optic zone. It uses your binocular vision by fine-tuning the depth of field of each eye individually, creating a customized fusion of the two images in the intermediate zone – the Blend Zone.

Simulation of the experience after conducting PRESBYOND® LBV by fine-tuning the depth of field of each eye individually, creating a customized Blend Zone

A significant advantage over conventional monovision. In addition to excellent near vision and distance vision, patients can experience very good intermediate vision and contrast sensitivity through PRESBYOND® LBV. Patients will be able to adapt faster and be happy no need of wearing glasses.

PRESBYOND®LBV
presbyopia treatment

Special features
Excellent in intermediate vision
Sharply focused vision at all distances
Able to adapt faster to their new eyesight
Maintainscontrast sensitivityandpreserves stereo-acuity very well
Can correct up to 300 degrees of presbyopia, 800 degrees of myopia, 200 degrees of hyperopia and 200 degrees of astigmatism at the same time

  • MonoVision
    單眼視覺

    Suitable for 40-65 years old; without cataracts
    Laser treatment
    - Retain -1.5-2.5D myopia
    • - Unclear intermediate distance vision
    • - Unable to perform depth of field
    • - Have chromatic aberration
    • - Weak to maintain stereo-acuity
    • - Only 59-67% customer satisfactory

  • PRESBYOND LBV
    老花矯視

    Suitable for 40-65 years old; without cataracts
    Laser treatment
    - Retain -1.5D myopia
    - Increase in the depth of field of each eye
    • - Excellent visual acuity at all distances
    • - Well-performed depth of field
    • - No chromatic aberration
    • - Maintains stereo-acuity very well
    • - Virtually no loss of contrast sensitivity
    • - Up to 97% customer satisfactory

  • Multifocal IOL
    多焦點人工晶體手術

    Suitable for 65 years old or above; with cataracts
    Excision of the original crystalline lens and implantation of multifocal intraocular lens
    • - Improves in vision at all distances
    • - Have chromatic aberration
    • - May have glare
    • - May appear overlapping images
    • - May have complications
    •   e.g.
      - Retinal detachment
      - Endophthalmitis
    • - Strenuous exercise may cause shifting of crystalline lens

MonoVision
單眼視覺

Suitable for 40-65 years old; without cataracts

Laser treatment
- Retain -1.5-2.5D myopia
- Unclear intermediate distance vision
- Unable to perform depth of field
- Have chromatic aberration
- Weak to maintain stereo-acuity
- Only 59-67% customer satisfactory

PRESBYOND LBV
老花矯視

Suitable for 40-65 years old; without cataracts

Laser treatment
- Retain -1.5D myopia
- Increase in the depth of field of each eye
- Excellent visual acuity at all distances
- Well-performed depth of field
- No chromatic aberration
- Maintains stereo-acuity very well
- Virtually no loss of contrast sensitivity
- Up to 97% customer satisfactory

Multifocal IOL
多焦點人工晶體手術

Suitable for 65 years old or above; with cataracts

Excision of the original crystalline lens and implantation of multifocal intraocular lens
- Improves in vision at all distances
- Have chromatic aberration
- May have glare
- May appear overlapping images
- May have complications
e.g.
- Retinal detachment, Endophthalmitis
- Strenuous exercise may cause shifting of crystalline lens

  • Individualized ablations

    It incorporates preoperative wavefront data to fine-tune the depth of field for each eye individually. The functional age of the eye is also factored in. In result, a personalized ablation profile is created for optimized target refraction.

  • Fast and comfortable experience

    MEL® 90 excimer laser system has integrated plume removal system (CCA+) into the device, which can stabilize the laser excitation during surgery without causing burnt smell, making the treatment speed fast and safe.

  • Outstanding visual acuity at all distance

    ZEISS PRESBYOND® LBV has more than 10 years of clinical experience in more than 300 locations worldwide. It provides excellent visual acuity for near, intermediate and distance vision by customizing each eye individually. According to clinical studies, there is virtually no loss of contrast sensitivity and stereo-acuity is maintained.

PRESBYOND®LBV treatment steps

Combination of ZEISS CRS-Master®, MEL® 90 excimer laser and VisuMax® femtosecond laser system

  • 01: Creating the flap

  • 02: Relocating the patient

  • 03: Folding back the flap

  • 04: Correcting the vision
    An excimer laser shapes the corneal tissue, correcting the dominant eye for distant vision and the non-dominant eye for near vision.

  • 05: Repositioning the flap
    （the flap is returned to its original position）
    Refractive error is corrected

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