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Dr. Neeta Vyawahare MBBS DO (Opth) Regd. No 070595 Dr. Pravin Vyawahare MBBS MS (Opth) Regd. No 65374

Photorefractive Keratectomy (PRK)

In giving my permission for PRK, I understand the following:

The Long term risks and effects Of PRK Surgery are unknown .The Goal of PRK with the eximer laser is to reduce dependence upon or need for the contact lenses and or eye glasses however I understand that with all forms of treatment, the result in my case cannot be guaranteed. for example

1. I understand that an overcorrection or undercorrection could occour,causing me to become farsighted or nearsighted or increase my astigmatism and that this could be either permanent or treatable. I understand an overcorrection is more likely in people over the age of 40 years and may require the use of glasses for reading or for distance vision some or all of time.
2. If I currently need reading glasses, I will likely still need reading glasses after this treatment. Is possible that dependence on reading glasses may increase or that reading glasses may be required at an earlier age if I have PRK surgery
3. 3) Further treatment may be necessary, including a variety of eye drops, the wearing of eyeglasses or contact lenses (hard or soft), additional PRK or other refractive surgery
4. 4) My best vision, even with glasses or contacts, become worse.
5. 5) There may be a difference in spectacle correction between eyes, making the wearing of glasses difficult or impossible. Fitting and wearing contact lenses may be more difficult
6. 6) I have been informed, and I understand, that certain complications and side effects have been reported in the post-treatment period by patients who have jad PRK, including the following:

B) Possible long- term complications of PRK surgery: Haze : Loss of perfect clarity of the cornea, usually not affecting vision, which usually resolves over time.
Starbursting : After refractive surgery, a certain number of patients experience glare, a “starbursting” or halo effect around lights, or other low-light vision problems that may interfere with the ability to drive at night or see well in dim light. Although there are several possible causes for these difficulties, the risk may be increased in patients with large pupils or high degrees of correction. For most patients, this is a temporary condition that diminishes with time or is correction. For most patients, this is a temporary condition that diminishes with time or is correctable by wearing glasses at night or talking eye drops. For some patients, however, these visual problems are permanent. I understand that my vision may not seem as sharp at night as during the day and that I may need to wear glasses at night or take eye drops. I understand that it is not possible to predict whether I will experience these night vision or low light problems, and that I may permanently lose the ability to drive at night or function in dim light because of them. I understand that I should not drive unless my vision is adequate. These risks in relation to my particular pupil size and amount of correction have discussed with me.

Loss of Best Vision : A decrease in my best vision even with glasses or contacts. IOP Elevation: An increase in the inner eye pressure due to post-treatment medications, which is usually resolved by drug therapy or discontinuation of post-treatment medications.

Mild or serve infection: Mild infection can usually be treated with antibiotics and usually does not lead to permanent visual loss. Severe infection, even if successfully treated with antibiotics, could lead to permanent scarring and loss of vision that may require corrective laser surgery or, if very severe, corneal transplantation

Keratocnus: Some patients develop keratoconus, a degenerative corneal disease affecting vision that occurs in approximately 1/2000 in the general population. While there are several tests that suggest which patients might be at risk, this condition can develop in patients who have normal preoperative topography (a map of the cornea obtained before surgery) and pachymetry (corneal thickness measurement). Since keratoconus may occur on its own, there is no absolute test that will ensure a patient will not develop keratoconus following laser vision correction. Severe keratoconus may need to be treated with a corneal transplant while mild keratoconus can be corrected by glasses or contact lenses

Infrequent complications. The following complications have been reported infrequently by those who have had PRK surgery: itching, dryness of the eye, or foreign body feeling in the eye; double or ghost images; patients discomfort; inflammation of the cornea or iris; persistent corneal surface defeat; persistent corneal scarring severe enough to affect vision; ulceration/ infection; irregular astigmatism (warped corneal surface which cause distorted images); cataract; drooping of the eyelid; loss of bandage contact lens with increased pain (usually corrected by replacing with another contact lens); and a slight increase of possible infection due to use of a bandage contact lens in the immediate post-operative period.

I understand there is a remote chance of patients or complete loss of vision in the eye that has had PRK surgery.

I understand that it is not possible to state every complication that may occur as a result of PRK surgery. I also understand that complications or a poor outcome may manifest weeks, months, or even years after PRK surgery

I understand this is an elective procedure and that PRK surgery is not reversible

For women only: I am not pregnant or nursing. I understand that pregnancy could adversely affect my treatment result.

I have spoken with my physician, who has explained PRK, its risks and alternatives, and answered my questions about PRK surgery. I therefore consent to having PRK surgery on:

The advantages and disadvantages, risks, and possible complications of the present surgery and alternative treatments have been explained to me by my ophthalmologist. There may arise unwanted emergency situation during surgery. In that situation I give my full authority to my treating doctor to take any necessary decision for me / my Patient`s wellbeing. Although it is impossible for the doctor to inform me about every possible complication that may occur, the doctor has answered all my questions to my satisfaction. In signing this information valid consent for operation. I am stating that I have been offered a copy of this consent

Further, I consent to the observing, using medical record, Photographing or televising of the procedure to be performed for medical, scientific, research, education purpose and publication in scientific journals provided my identity is not revealed by the picture of by descriptive text accompanying them

I hereby give permission to release / publish medical data and / or video / audio record / photograph the medical current procedure and the procedures performed in subsequent / follow up visits for the advancement of medical knowledge

I have read and understood this consent form, all my queries have been answered, and I authorize my surgeon to proceed with the operation on my __________________________ (indicate "Right" or "Left" eye).