Surgical Vision Correction Explained

This video provides a comprehensive overview of surgical vision correction.
It is the role of your cornea and lens to focus the incoming light onto your retina.
Myopia is also called near-sightedness. Without glasses, distant objects appear blurry but near objects are in focus.
Hyperopia is also called far-sightedness. Distant objects may be blurry, and objects are increasingly out of focus the closer they get.
Astigmatism is where the front part of your eye is curved like a rugby ball rather than a bowling ball. The image arriving on your retina will be stretched in one direction.
Presbyopia is the loss of elasticity and focusing power of your eye's lens. Presbyopia is the reason why people who previously saw perfectly will start to need reading glasses at around age 45.
There are three main approaches to surgically correcting the focus error of the human eye. This video explains the main advantages and disadvantages of the following procedures:
- Corneal laser vision correction (PRK, LASIK, and SMILE)
- Phakic intraocular lenses (ICL and Artiflex lenses)
- Refractive lensectomy (permanent lens exchange)
The advantages of laser vision correction include:
- Short surgical time
- Fast recovery (except for surface ablation)
- Long track record
- No intraocular risks
- Lower cost than other techniques
The advantages of phakic intraocular lenses include:
- Reversible
- Suitable for high focus errors and patients not suitable for laser vision correction
- No long-term exacerbation of dry eye symptoms
- The corneal curvature is not disturbed
The advantages of refractive lensectomy include:
- Permanent correction of vision
- Able to restore range of vision to a presbyopic eye (i.e. patients over 45 years of age)
About Dr Nick Andrew:
Dr Nick Andrew MBBS FRANZCO PhD is an Australian eye surgeon with specific expertise in state-of-the-art cataract surgery, vision correction, micro-invasive glaucoma surgery, and complex surgery of the iris and lens. He has published over 45 scientific articles in international ophthalmic journals and is co-host of a leading podcast for eye surgeons. His office, Sight Specialists, is located in Southport, Gold Coast. You can learn more at www.sightspecialists.com.au.
Disclaimer:
Please note that this video is intended as general educational material only. The content is not medical advice. Surgical vision correction carries risks and individual results do vary. Before proceding with any medical procedure you should always seek a second opinion from an appropriately qualified health practitioner.

[@djalalch4544]

Thanks for the explanation !