PRK Expert in Perumbakkam
Your Trusted Partner in PRK
Our healthcare providers utilize PRK/LASIK surgery to correct refractive errors and improve visual acuity by reshaping the cornea. We are committed to providing comprehensive care and guidance throughout the PRK/LASIK surgery process, ensuring optimal outcomes and improved vision for our patients.
Understanding PRK
What is PRK?
PRK, or Photorefractive Keratectomy, is a type of refractive surgery used to correct vision problems such as nearsightedness, farsightedness, and astigmatism. During PRK surgery, the outer layer of the cornea (epithelium) is gently removed. A laser is then used to reshape the underlying corneal tissue, correcting the refractive error. The epithelium regenerates naturally over several days after surgery. PRK is known for its effectiveness in improving vision and may be recommended for patients with thinner corneas or those who are not suitable candidates for LASIK surgery.
How is PRK different from Lasik?
PRK (Photorefractive Keratectomy) and LASIK (Laser-Assisted In Situ Keratomileusis) are both refractive surgeries aimed at correcting vision, but they differ primarily in their surgical techniques. In PRK, the outer layer of the cornea (epithelium) is gently removed before the laser treatment, allowing direct reshaping of the cornea. The epithelium naturally regenerates over several days after surgery. In contrast, LASIK involves creating a thin flap in the outer layer of the cornea, which is lifted to expose the underlying corneal tissue for laser treatment. The flap is then repositioned. LASIK typically offers quicker visual recovery and less discomfort postoperatively compared to PRK, but PRK may be preferred for patients with thinner corneas or those at higher risk of flap-related complications. Overall, the choice between PRK and LASIK depends on individual factors such as corneal thickness, ocular health, and surgeon recommendation.
What happens before this procedure?
Before undergoing a PRK (Photorefractive Keratectomy) procedure, several preparatory steps are typically taken to ensure optimal outcomes. First, the patient undergoes a comprehensive eye examination to assess their overall eye health, measure visual acuity, and determine the extent of refractive error. This examination helps the eye surgeon determine the suitability of PRK surgery for the patient. If PRK is deemed appropriate, further tests, such as corneal topography and pachymetry, may be performed to evaluate corneal shape and thickness. The patient receives detailed instructions on preoperative preparations, including discontinuation of contact lens wear for a specified period before surgery and any necessary adjustments to medications. Additionally, the patient has a discussion with the surgeon to address any questions or concerns about the procedure, potential risks, and expected outcomes. By completing these preparatory steps, patients can feel confident and well-prepared for their PRK surgery, ensuring a smoother treatment experience and better postoperative results.
What happens during this surgery?
During a PRK (Photorefractive Keratectomy) surgery, the following steps typically occur:
Anesthesia: The eye is numbed using topical anesthesia (eye drops) to ensure the patient’s comfort throughout the procedure.
Epithelial Removal: The outer layer of the cornea, called the epithelium, is gently removed using a special solution or a surgical instrument. This step exposes the underlying corneal tissue for laser treatment.
Laser Reshaping: A computer-controlled excimer laser is used to reshape the cornea by removing tiny amounts of tissue. The laser precisely targets and corrects the refractive error, such as nearsightedness, farsightedness, or astigmatism, based on the patient’s individual prescription.
Ablation: The laser ablates (vaporizes) microscopic layers of corneal tissue according to the predetermined treatment plan, reshaping the cornea to improve its focusing ability.
Postoperative Care: After the laser treatment is completed, a temporary protective contact lens may be placed on the eye to facilitate epithelial healing and provide comfort. The eye is then shielded with a protective eye patch or bandage.
Recovery Room: The patient is usually moved to a recovery area where they are monitored for a short period to ensure stability before being discharged home.
What happens after PRK?
After PRK (Photorefractive Keratectomy) surgery, patients enter a postoperative care phase to promote healing and ensure optimal visual outcomes. Patients are typically prescribed antibiotic and anti-inflammatory eye drops to prevent infection and reduce inflammation, which they use according to the surgeon’s instructions. The eye may be shielded with a protective contact lens and eye patch immediately after surgery to aid in epithelial healing and provide comfort. Patients are advised to rest and avoid strenuous activities for the first few days following surgery. While vision may be blurry initially, it gradually improves over the coming days and weeks as the epithelium regenerates and the cornea heals. Follow-up appointments with the eye surgeon are scheduled to monitor progress, assess visual acuity, and address any concerns or complications that may arise. By following postoperative care instructions diligently, patients can promote optimal healing and achieve the best possible visual outcomes after PRK surgery.
What are the risks or complications of PRK?
PRK (Photorefractive Keratectomy) is generally considered a safe and effective procedure, but like any surgical intervention, it carries some risks and potential complications. These may include:
Infection: Although rare, there is a risk of postoperative infection, which may require treatment with antibiotics and can potentially affect vision if left untreated.
Corneal Haze: Some patients may develop corneal haze, a clouding of the cornea, during the healing process. This typically resolves over time but may temporarily affect vision.
Delayed Epithelial Healing: The removal of the epithelium during PRK can result in delayed epithelial healing, leading to prolonged discomfort, blurred vision, and increased risk of infection.
Undercorrection or Overcorrection: While PRK aims to correct refractive errors, there is a possibility of undercorrection or overcorrection of vision, requiring additional treatment or enhancement procedures.
Corneal Irregularities: PRK may occasionally result in corneal irregularities, such as uneven tissue removal or surface irregularities, which can affect visual quality.
Dry Eye Syndrome: Some patients may experience dry eye symptoms following PRK surgery, including irritation, burning, and fluctuating vision.
Glare and Halos: Visual disturbances such as glare, halos, or starbursts around lights may occur, particularly at night, although these symptoms usually improve with time.
Regression: In some cases, the initial correction achieved with PRK may regress over time, leading to a gradual return of refractive error.
Corneal Ectasia: This rare but serious complication involves progressive thinning and bulging of the cornea, leading to changes in vision and potentially requiring corneal transplantation to correct.
Other Rare Complications: Other rare complications of PRK surgery may include corneal scarring, infection of the corneal flap, or persistent pain or discomfort in the eyes
Is PRK worth it?
Whether PRK (Photorefractive Keratectomy) is worth it depends on various factors, including your individual eye health, refractive error, lifestyle, and expectations. PRK can offer significant benefits, such as reduced dependence on glasses or contact lenses and improved quality of life through clearer vision. It is a safe and effective procedure for correcting nearsightedness, farsightedness, and astigmatism. However, it’s essential to consider potential risks and complications, as well as the possibility of needing enhancements or experiencing temporary discomfort during the healing process. Consulting with an experienced eye surgeon can help you weigh the pros and cons and make an informed decision about whether PRK is the right option for your vision correction needs.
How long does it take to recover from PRK?
The recovery time after PRK (Photorefractive Keratectomy) varies from person to person, but most patients can expect a gradual improvement in vision over the course of several days to weeks. Immediately after surgery, patients may experience blurry vision, discomfort, and sensitivity to light, which typically subsides within the first few days. The outer layer of the cornea (epithelium) regenerates over the following days, leading to clearer vision. While some patients may achieve stable vision within a week or two, others may experience ongoing improvements over several weeks as the eyes continue to heal. It’s important to follow postoperative care instructions provided by your surgeon, including using prescribed eye drops and attending follow-up appointments, to ensure optimal healing and long-term visual outcomes. Overall, most patients can expect to return to their normal activities, including driving and working, within a few weeks after PRK surgery.
Frequently Asked Questions on PRK
PRK is a type of refractive surgery used to correct vision problems such as nearsightedness, farsightedness, and astigmatism by reshaping the cornea.
Most individuals with stable vision and healthy eyes are candidates for PRK surgery, but a comprehensive eye examination is needed to determine suitability.
PRK surgery is typically not painful due to the use of topical anesthesia (eye drops) to numb the eye during the procedure.
PRK surgery usually takes about 15 to 30 minutes per eye and is performed on an outpatient basis.
Many patients notice improved vision within a few days after PRK surgery, with further enhancements occurring over several weeks as the eyes heal.
While PRK can significantly improve vision, some individuals may still require glasses for certain activities or under specific conditions, depending on their individual prescription and visual needs.
PRK surgery provides long-term vision correction for the majority of patients, with stable vision achieved over time. Regular eye exams are recommended to monitor vision and address any changes that may occur.