Cornea Services

CORNEA SERVICES
“vazhum kangal” eye bank associated with this department has a full team to collect donor eyes round the clock. The cornea department has facilities to process, evaluate and to preserve the cornea for transplant surgeries. So far we have operated more than 1000 corneal transplant surgeries with excellent results.

The Eye donation movement is still at a nascent stage in our country due to a lack of awareness, religious beliefs and taboos associated with organ donation. There is a growing backlog of patients who need eye transplant surgeries, and only if people are aware of this need, and consent to donate their eyes, can we begin to fight this crusade against corneal blindness.

Approximately 1.3 million people are blind due to corneal problems. There is a huge gap between the supply and demand of eyes. Donation of a pair of eyes from one donor can save the sight of up-to 4 people in the hands of expert corneal surgeons. Eye donation can be done by any person irrespective of their caste, religion or age.Spectacle wearers, Diabetic and Hypertensive patients or patients who have undergone simple eye surgeries (Cataract) can also donate.

After the death of the consenting donor, the eyes should be closed, the head kept raised and retrieval should be done within 6-8 hours by the doctor.

Let someone see through your eyes what you have seen your whole life, Let your eyes LIVE even after your DEATH.

Introduction

We are having the state of the art technology for Refractory correction by LASIK laser correction. High powers and astigmatism can be corrected. Implantable Contact lens for eyes not fit for laser correction can also be done.

Description

Normal rays of light entering the eyes are brought to precise focus on retina-the light sensitive layer lining the back of the eye. When such a focus is not achieved, a refractive error results and vision is not clear.

When light rays are focused in FRONT of the retina, the resulting condition is termed MYOPIA (Short-sightedness). In HYPEROPIA (Long-sightedness) the light rays come to focus BEHIND the retina. ASTIGMATISM (Cylindrical error) occurs when incoming light rays unable to reach a common focus within the eye.

Investigation

Corneal topography

Corneal topography is a non invasive imaging technique for mapping the surface of the cornea. It extends the measurement range from the four points a few millimeters apart that is offered by keratometry to a grid of thousands points covering the entire cornea in seconds and is completely painless.

OPD Scan

It is a 5 in 1 true refractive workstation combining wavefront aberrometer, Topographer, auto-refractometer, Auto-keratometer, pupillometer and pupillographer. It determines the best strategy for vision correction. All the wavefront details are connected to the Laser machine and Customized laser ablation is done Detection of earliest signs of abnormal cornea (Keratoconus) can be made out. It has 33Blue placedo mires, which provide a minimum of 11,880 data points.

Procedure

LASIK is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses.

The Nidek EC-5000 Excimer Laser System is approved for topography-assisted LASIK treatment using the Final Fit™ custom ablation treatment planning software, for the reduction or elimination of Refractive errors.

You would be a good candidate if you are 21 years of age or older and your vision is:

  1. From -0.50 to -10.0 diopters with astigmatic refractive errors more than -0.5 diopters up to -6.0 diopters .
  2. Stable refraction for a year is mandatory.
  3. The Procedure will take less than half an hour for both eyes together. It will be done under Topical anaesthetic drops ( NO Injections, NO Pain, NO Bandage).

Corneal Collagen Cross Linkage

Corneal Collagen Crosslinking with Riboflavin (CXL) is a well proven keratoconus treatment. Keratoconus is an ectatic corneal pathology weakening the corneal fibers. CXL works by increasing collagen crosslinks thereby strengthening the cornea and stabalising the cone.

During the corneal crosslinking treatment, custom-made riboflavin drops saturate the cornea, which is then activated by ultraviolet light. This tecnique arrest progression of keratoconus, and thereby prevent further deterioration in vision and the need for corneal transplantation. Glasses or contact lenses will still be needed following the cross-linking treatment (although a change in the prescription may be required) but it is hoped that it could limit further deterioration of vision.

IMPLANTABLE COLLAMAR LENS

Good candidates for the ICL :

  1. Are between the ages of 21 and 45.
  2. Nearsighted, including those with mild, moderate, and severe myopia (as low as -3D to as high as -20D prescription) with minor or no occurrence of astigmatism.
  3. Sufficient anterior chamber depth and acceptable endothelial cell density
  4. Stable refraction for a year.
  5. Have dry eyes, severe myopia, or a thin cornea (non-LASIK candidate).
  6. Better to avoid in pregnant and Lactating women ,Severe allergic disorders, and in mismatching parameters.

It involves a micro incision through which a foldable ICL is implanted under topical anaesthetic drops.

When LASIK should not be done?

Patients with recurrent corneal erosion.
Patients with advanced glaucoma.
Patients with collagen vascular, autoimmune or immunodeficiency diseases.
Pregnant or nursing women.
Patients with thin and cone-shaped bulging of the cornea (keratoconus).

Will my vision improve immediately?

You should be able to see reasonably well immediately the very next day after your procedure. If you have had a ASA, your eye will be patched for 24 hrs following which your vision will become clear . In either procedure the clarity of vision will improve as the healing takes place.

What are the possible side effects of the procedure?

Early effects MAY include Light sensitivity or glare.

When can I resume my normal activities?

If you had ASA, you can return in 4-5 days time and if you had LASIK done you can return to work from the next day. The eye medication should be applied as per schedule and there should be no trauma or water falling inside the eye for a week.

How often I should come for check up?

You will have to come on the 1st Post operative day and then after a week later and then after 1 month . After that you will have to visit once a year to examine your retina.