Enhancing Night Vision: The Impact of PRK and LASIK Eye Surgery

Many people who have undergone PRK (Photorefractive Keratectomy) or LASIK (Laser-Assisted In Situ Keratomileusis) eye surgery often wonder about the impact of these procedures on their night vision. Both PRK and LASIK are refractive surgeries designed to correct vision problems like myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. However, the potential changes to night vision following these procedures are a common concern. This article aims to provide a comprehensive understanding of how PRK and LASIK can affect night vision.

Understanding PRK and LASIK

PRK and LASIK are both laser eye surgeries that reshape the cornea to correct vision. PRK was the first type of laser eye surgery for vision correction and is the predecessor to LASIK. The main difference between the two is how the eye is prepared for the procedure. In PRK, the top layer of the cornea is completely removed, while in LASIK, a thin flap is created on the cornea’s surface.

Impact on Night Vision

Both PRK and LASIK can potentially affect night vision, at least temporarily. Some patients may experience glare, halos, or starbursts around lights at night following the surgery. These side effects are usually temporary and improve over time as the eye heals. However, in rare cases, they can be permanent.

Why Does Night Vision Change After Surgery?

The changes in night vision after PRK or LASIK are primarily due to the way these procedures reshape the cornea. The laser used in these surgeries removes tissue from the cornea to correct vision, which can sometimes cause irregularities in the cornea’s shape. These irregularities can scatter light as it enters the eye, leading to visual disturbances like glare and halos at night.

Improving Night Vision After Surgery

Most patients find that their night vision disturbances improve significantly within the first few months after surgery. However, there are steps that can be taken to help improve night vision further:

• Regular follow-up appointments with the eye doctor to monitor healing and address any issues promptly.
• Use of prescription eye drops to help reduce inflammation and promote healing.
• Wearing sunglasses during the day to protect the eyes from UV light, which can slow healing.
• Using artificial tears to help keep the eyes moist and comfortable.

In conclusion, while PRK and LASIK can temporarily affect night vision, the majority of patients find that these effects diminish over time. Regular follow-ups with the eye doctor and proper post-operative care can help ensure the best possible outcome for night vision after surgery.