If you have any refractive errors and want to get rid of it, then laser treatment for eyes is for you! Laser treatment eliminates the need for spectacles or contact lenses from your life.
An imperfectly shaped cornea or eyeball causes refractive errors. The cornea is a transparent, clear front part of the eye which is responsible for bending and focusing light.
Vision correction surgeries like laser surgery work by reshaping the cornea so that the light focuses on the retina.
Types of refractive errors
There are primarily four types of refractive errors:
Nearsightedness (myopia): A person suffering from nearsightedness can see things closer to him/her clearly, but distant objects look blurry to them.
Farsightedness (hyperopia): A person who has farsightedness can see distant objects clearly but faces trouble seeing things up close clearly.
Astigmatism: In astigmatism, things look blurred at any distance. This happens when the cornea flattens or curves unevenly, distorting both the near and distant vision.
Presbyopia: Presbyopia is also known as ‘ageing eye’. This is a refractive error in which the eyes loses its ability to focus because of the natural ageing of the person.
Laser surgery risk factors and eligibility
Laser eye surgery is not for everyone. You might be unsuitable for the following factors:
Excessively thin or irregularly shaped corneas
Have eye conditions like severe dry eyes
Age limitations (minimum age should be 18)
Factors such as pregnancy
Take certain medication
If you have health issues like diabetes, rheumatoid arthritis, etc.
If you have faced significant changes to your vision prescription
Why go for Lasik eye surgery?
Lasik stands for laser in-situ keratomileusis; it is the most popular and recommended laser eye surgery.
Lasik eye surgery has been around for 25 years now. Majority of people reach their vision goal after the surgery.
It is a painless procedure that gets done in 20 minutes for both the eyes.
Lasik involves no stitches or bandages.
Freedom from glasses or contacts
Possible complications after laser eye surgery
Although laser surgery is usually a successful one, there are some possible complications and side-effects that have been reported, like:
Regression of correction
Trouble fitting contact lenses for additional correction
Loss of visual acuity
Laser treatment for eyes: What to expect
Before Lasik laser eye surgery
Your eyes need to be carefully evaluated before Lasik laser eye surgery. During a comprehensive evaluation, your doctor will do a series of eye tests. He/She will measure your cornea, looking out for any irregularity in its shape, colour, and thickness.
Your ophthalmologist will look for signs for
Inflammation in the eyes
Intraocular pressure (IOP)
You can also be advised to stop wearing contact lenses, usually two weeks before the surgery. This becomes essential because contacts can alter the natural shape of your cornea, potentially affecting Lasik laser surgery outcomes.
Pre-procedure instructions before Lasik eye surgery
You will be asked to take antibiotic drops in eyes as prescribed by the doctor.
You can also be asked to take combiflam an hour before the procedure to avoid allergy to the drug.
You will be asked to take light food two hours before Lasik eye procedure.
Please wash your hair and scrub your face with soap and water on the day of surgery.
Do not use any perfume, deodorant, or sprays on the day of surgery.
Make sure to get a pair of dark glasses on the day of surgery.
Discontinue contact lenses for a few days before the procedure.
Inform the doctor about your history of eye diseases, allergies, or medications you had.
During Lasik laser eye surgery
Just before the surgery starts, numbing eye drops are applied to your eye so that you do not feel any pain or discomfort.
Your eyes will then be positioned under the laser. An instrument called a lid speculum would be used to keep your eyelids open during the surgery.
A suction ring is also placed to the front of your eye before cutting the corneal flap to prevent eye movement and sensation of pressure.
Then the surgeon will use a cutting laser to create a flap from the front part of your eye. The corneal flap is folded a bit so that the surgeon can get access to your cornea to be reshaped.
Then, an excimer laser is used according to your needs. You will be asked to focus on the point of light for a short time. The laser then reshapes the cornea. You might feel a bit of pressure and hear a clicking sound during the procedure.