Other refractive procedures
For those that are not candidates for standard laser vision correction there are alternative vision correction options that may be more suitable.
With developments in modern ophthalmic technology and techniques, there are other excellent refractive correction options often providing an excellent solution that will be suitable for your individual visual health and goals.
To learn more about these alternative options, please scroll down or alternatively hit the links below to visit the section you wish to read.
Take our Laser Vision Suitability TestABOUT refractive lense exchange (RLE)
One promising alternative is Refractive Lens Exchange (RLE), also known as Clear Lensectomy (CLE). This procedure involves replacing the eye’s natural lens, located behind the coloured part of the eye (the iris), with an artificial intraocular lens (IOL). This approach can address a wide range of vision issues, including:
- Myopia (Near-sightedness)
- Hypermetropia (Farsightedness)
- Astigmatism
- Presbyopia
- Combination of above
RLE can correct these conditions across a much broader range than laser vision correction, making it an excellent option for individuals with significant refractive errors.
educational video
About the lens extraction and intraocular lens (IOL) implant procedure
This video provides a simple and visual explanation of where and how IOL’s are used for Refractive Lens Exchange or clear lensectomy.
UNDERSTANDING IOL’s & how they correct vision
Once the natural lens is removed an intraocular lens (IOL) must be used to replace it. IOL’s have revolutionised the treatment of cataracts and other vision problems. These artificial lenses replace the eye’s natural lens when the lens becomes cloudy, restoring clear vision. With advancements in technology, and safety, the procedure is now also performed for patients who do not have cataracts but for those who want to reduce reliance on glasses or contact lenses. The IOL can be expected to remain clear and in position for life.
A variety of IOL’s are available to cater to different visual needs and lifestyles.This is determined after a detailed pre-operative assessment, in particular after testing the dimensions of the eye with a device such as the IOL Master. The power and style of the intraocular lens to replace the natural lens requires detailed discussion of the needs of each individual patient. The types of lenses available are listed below.
- Monofocal
- Multifocal
- Toric
- Extended Depth of Focus (EDOF)
- Accommodative
Scroll down for more detail and to find out more about RLE and the power of IOL’s read this blog.
TYPES OF INTRAOCULAR LENSES (IOLs)
Monofocal IOL’s are the most commonly used lenses and provide a single focal point. They are designed to offer clear vision at one specific distance – either near, intermediate, or far.
Advantages:
- Cost-Effective: Often less expensive than other IOL’s
- Excellent Distance Vision: Often chosen to correct distance vision, ideal for activities like driving/ watching TV
- Simplicity: Fewer visual disturbances compared to multifocal
Considerations:
- Corrects one distance only. Patients may still need glasses for reading/close-up work if set for distance vision and vice versa glasses may be required for distance if the lens is set for reading or close work.
Multifocal IOL’s are designed to provide multiple focal points, allowing for clear vision at various distances – near, intermediate, and far.
Advantages:
- Reduced Dependence on Glasses: Many patients can perform daily activities without the need for glasses.
- Versatile Vision: Suitable for a range of activities, from reading to driving.
Considerations:
- Some patients may experience halos or glare around lights, especially at night.
- Vision may not be ‘sharp’ at each distance
Toric IOL’s are designed to correct astigmatism in addition to cataracts. They have different powers in different meridians of the lens to compensate for the uneven curvature of the cornea.
Advantages:
- Astigmatism Correction: Provides clear vision by addressing simultaneously cataracts & astigmatism.
- Improved Visual Quality: Reduces or eliminates the need for glasses or contact lenses for distance vision.
Extended Depth of Focus (EDOF) IOL’s provide a continuous range of vision, improving intermediate and distance vision, and offering better near vision.
Advantages:
- Intermediate Vision: Particularly beneficial for activities such as computer work or cooking.
- Reduced Glare and Halos: Lower incidence of visual disturbances compared to multifocal IOL’s.
Considerations:
- Near vision might not be as sharp as with multifocal lenses, some patients may need reading glasses.
Read this blog on how EDOF lenses enhance your vision.
Accommodative IOLs are in experimental stage and remains elusive, the holy grail of IOL’s. They are aimed and designed to move or change shape within the eye, mimicking the natural focusing ability of the eye’s lens to provide clear vision at multiple distances.
CONSULTATION AND CHOICE
The choice of intraocular lenses depends on individual visual needs, lifestyle, and the specific characteristics of the eye.
Consultation with an ophthalmologist is crucial to determine the most suitable IOL type. Advances in IOL technology continue to improve visual outcomes and quality of life for millions of people worldwide, ensuring that the journey to clearer vision is both accessible and personalised.
