Is there any evidence to show that LASIK can worsen presbyopia?
Hi Jun Wei
LASIK will not worsen presbyopia ('Lao Hua'), nor will it accelerate its development.
In other words, presbyopia develops at the same rate and becomes manifest at a particular age (around 40 years of age or so) whether you had LASIK done or not.
LASIK purely alters the shape of the cornea (the clear window at the front of your eye). Presbyopia on the other hand involves the loss of autofocusing capability of the lens of your eye. This lens is inside your eye, completely separate from the cornea and not affected at all by LASIK or any other laser refractive procedure.
Presbyopia is a much misunderstood condition, and there are endless myths about it.
But it is very simple. It is like your autofocus camera got stuck and cannot autofocus...
Hi Jun Wei,
To my knowledge there is no data to show that LASIK can worsen presbyopia.
What you need to understand that when LASIK is performed to treat any eye degree, it does not stop the eye from aging. And presbyopia is basically an issue with the aging eye. At about 40 years old, human eyes start to lose its full ability to focus for near. This is compensated for by being short-sighted.
Whether you are not myopic by virtue of being simply "lucky" or not myopic because you had LASIK done to treat your myopia are the same when you get to around 40. You will start to be affected by presbyopia then.
Similarly, if you are myopic and did not bother to have LASIK before and are wearing contact lenses, you will still feel the effect...
Dear Jun Wei
To begin, I would like to explain the concept of LASIK and presbyopia.
Presbyopia is caused by the loss of elasticity of our crystalline lens, resulting in the inability to focus well at near. This is part and parcel of ageing. Most people generally experience this onset in their 40s.
LASIK is a type of laser vision correction procedure that is performed by an ophthalmologist using laser to reshape the front part of the eye called the cornea.
LASIK does not alter your focusing ability. Hence, it does not worsen presbyopia or cause earlier onset of presbyopia. Patients with healthy eyes will not lose their focusing ability after LASIK. However, as they approach or enter their 40s, focusing ability will be reduced and a pair of reading glasses may be required.
Hope I have addressed...
Hi Jun Wei,
This is a frequently asked question. There is no evidence nor reason to suggest that Lasik can worsen presbyopia as presbyopia is a condition that occurs in middle age due to stiffening of the native lens, whilst Lasik is corneal-refractive surgery.
The most common reason why people believe that Lasik worsens presbyppia is that the patients pre-existing short-sightedness means that NO accommodation is required to see near objects. Hence once presbyopia sets in for everyone after the age of 40 years old, myopic patients are still able to see by removing their spectacles.
Patients who have undergone vision correction for distance, and subsequently develop presbyopia will not be able to see near objects simply by removing their spectacles (since they don't have any residual short-sightedness, and hence do not wear spectacles)
This is most likely the...