Lasik Eye Surgery

Harsha Sai Eye Hospital is the first Center to introduce and perform Streamlight and Laser Treatments & Procedures

LASIK surgery is the correction of the eye’s cornea (some of the eye which is at the front most part, basically it is the wind shield of your eye which passes light through into different parts of the eye) by changing the cornea’s shape using laser.

The shape of the cornea plays an important role in sight, its shape should match with the shape of the eye (length) and if there is no match between shape of cornea and the shape of the eye there is a blur vision to your sight which is an “refractive error” in technical terms which basically distorts your vision. So, how to correct vision with corneal defects, it is where LASIK comes into play, LASIK basically uses laser to correct the shape of the corneal shape defects. During LASIK corneal flap is reshaped and adjusted to improve the vision so as to avoid your glasses.

In the Lasik surgery flap of cornea is created using laser and then using Excier Laser cornea is removed/corrected so as to align itself with the shape of the eye and thus produce a rectified vision which is clearer, sharper and crispier so no glasses or contact lenses after this procedure.

Latest Technologies Adopted at Harsha Sai

Streamlight Eye Surgery (Epi Contoura - Streamlight)

Epi Contoura Streamlight is the latest introduction for specs removal by laser procedures. Epi Contoura Streamlight is specially designed for patients with thin corneas, delivering extraordinary results with a completely pain-less touch-less, cut-less, blade-less, flap-less laser procedure.

Why Choose Us

  • Surgeries of the eye involving the cornea are as important as any of the other structure of the eye, these surgeries need to be performed under equipments and hands that are meant for these specific purpose and Harsha sai is equipped with these latest technology to perform these procedures.
  • Wavelight Ex500 Excimer System from Alcon for LASIK Vision Correction which Achieve outstanding visual outcomes with our integrated WaveLight®Technology.
  • Wavelight Topolyzer Vario Diagnostic Device this is a Precision measurements for personalized treatments
  • Oculyzer II – Wavelight - offering non-contact measurement and full analysis of the anterior eye segment. offering the best possible corneal imaging.
  • All these equipments are from a well reputed brand like Alcon which never miss a thing so that the outcome is the best.
  • Most importantly qualified and experienced surgeons with staff having served and handled successful cataract procedures for any number of times.
  • Leaders in cataract surgery as we are one of the early care providers in this field.
  • Latest technology adopted to ensure the best of the treatments.
  • Equipments with high-class feature.
  • Most importantly qualified and experienced surgeons with staff having served and handled successful cataract procedures for any number of times.
  • Diagnostics for supplementing and assisting the surgeons to arrive at the most relevant and best treatment for the patient.

Symptoms of Cataract

Refractive error can result in blurring of vision, glare in the eyes or halos with light that is bright, double vision, strained eyes or headaches. Glasses can correct this and even a contact lens can correct this problem of refractive errors.


As a first step laser is beamed into the cornea to create a flap to a predefined thickness, width, depth and different factors that are patient dependent are considered and small bubbles which are thousands by number are formed and this sets the architecture of intracorneal surface of the flap and a flap is formed. Step one completed.

The Excimer Laser part comes into play in the second step, Excimer Laser is a “cool” laser. The corneal tissue is removed by removing the intermolecular bonds to a shape where it alters the corneal contour and thus correcting the “refractive errors” that has resulted in the clarity of the vision and as the corneal tissue is removed in a elliptical fashion a flattened cornea occurs and myopia corrected.

Farsight, Nearsight and Astigmatism


Eye is nothing like a camera in functionality, because as in camera the light from the source passes through a film of the eye called cornea and then into the lens of the eye and the light is focused onto the retina (the inner most layer of the eye). If the eye does not focus this light exactly onto the retina then there is a refractive error. This is because the eye shape has changed either has become short or long or there is change in the physiology of the cornea or the lens to not focus the light onto the retina.

There are four types of refractive errors:


In Myopia the light is focused in front of the retina which means that the eye has become longer or the corneal or lens powers is more to focus the light on the front of the retina. In this case the near objects visible properly but the far objects are out of focus and there is blurred far vision. Glasses are required to correct this and it will be a minus glass.


In Hypermetropia the eye is too short so the light is focused behind the retina and this can occur even if the lens or cornea has less power than required to focus the light more on the retina but which is not possible. In this case the person sees the nearer objects are not able to be seen properly and but the farer objects are clearly visible. Glasses are required to correct this and plus powered glasses are recommended.


There is scattered focus of light on the retina with no clear focal point to light, thus distorting the vision, this is usually defect in the cornea of the eye being unevenly curved in direction more than the curve on the other side. Glasses are recommended to solve the problem and a cylinder lenses (with axis) are recommended.


There are electric impulses within the eye that make vision possible and if there is any deviation in the electric energy with any loss of the lens of the eye and it results in farsighted condition and it occurs generally middle and elderly patients so is referred to as ‘Aging Eye’ condition.

Diagnosing Eye Sight Issues

Painless vision tests are performed thus below tests are performed to assess the extent of error and accordingly the further course of action is recommended like the type of corrective glasses required and so on.
  • Visual Acuity Testing
  • Corneal Topography

Types of Laser Surgery to Correct Sight

  • LASIK procedure.
  • Contoura Visioin

What We Suggest

We at Harsha Sai Eye Hospital are well equipped for LASIK and other refractive error procedures, we suggest if there is any problem with your vision you should approach our specialized doctors and we certainly will give you an honest opinion that if any further testing need to be done and prescribe an appropriate treatment or surgical strategy, as this is the question of sight we recommend you to immediately consult if there are any signs of refractive errors at the earliest at Harsha Sai Eye Hospital.


LASIK is a laser assisted correction of the eye (refractive error) that lets you get rid of glasses and contact lenses permanently.

  • Yes If your above 18 years, as refraction in younger people less than 18 usually continues to change so No if less that 18 years.
  • You should not be pregnant or nursing as these conditions might change the measured refraction of the eye.
  • Your eyes must be healthy and your glass prescription stable.
  • Overall in health perspective if you are healthy in general you can have LASIK.
  • Have a common vision problem (e.g., astigmatism, farsightedness, nearsightedness)

Lasik is a pain free procedure since anesthetic drops are diligently which minimizes the pain drastically, but few of them can feel pressure like sensation for couple of minutes.

As in most of the patients both eyes are treated in same sitting, your procedure may last for 10 to 15 min.

You can resume your activities in 3-4 days time. Swimming and eye makeup should be avoided for one month.

One week for soft contact lenses and two weeks for RGP (Rigid Gas Permeable) contact lenses.

Yes, however you will need reading glasses once you reach presbyopic age.

Six month after surgery, the vast majority of patients treated achieved or reported extreme improvement in the quality of their vision - 98.8% of patients were satisfied or extremely satisfied and vision without glasses after surgery as good as, or even better than, with glasses before surgery.

Vision better than 20/20 without glasses: 99.4% of patients were corrected to 20/40 or better visual acuity, and 91.5% were corrected to 20/20 or better.

No significant incidences of dryness after surgery. No increase in unwanted glare, halos or night driving difficulty. Not one patient reported dissatisfaction with the results of their surgery. 98.2% of patients said they would have the surgery again.

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