Some people who are freed from glasses with laser surgery experience halos in the dark that are described as a circle of light around lights. Street lights and car headlights are surrounded by circles of light that can interfere with the normal operation of the car. In most cases, the perception of circles of light or rays of light either decreases or disappears completely over time...

Often the surgery for getting rid of glasses is not undertaken out of fear of dry eye. The need to use eye drops after laser surgery is caused by decreased eye surface sensitivity. Sensory nerve fibres are located largely in the superficial layers of...