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Can my vision be worse after LASIK treatment?


Yes. This is one of the risks associated with the surgery, and even an experienced LASIK surgeon in Singapore won’t be able to guarantee that it won’t happen. But fortunately, the likelihood of this happening is less than two per cent and there is a fair chance of further vision improvement with time.

This complication is also known as loss of best corrected visual acuity. It means that you are not able to see as well after surgery as you did before surgery, even with the best spectacles or contact lens correction given. It most commonly arises from cornea related problems such as corneal haze or scarring, decentered or uneven laser ablation and cornea flap complications. Loss of best corrected vision occurs is usually limited to difficulty in seeing clearly the bottom few lines of the visual acuity chart.

Other attributes of vision may become affected. Foremost of these is a decrease in contrast sensitivity. This means that even though you may have normal 6/6 vision, you have decreased ability to discriminate between shades of grey, especially under dim lighting. This may cause objects to appear fuzzy or greyish. There may also be complaints of excessive light sensitivity, glare, haloes or ghosting. Haloes are “rings” around lights. Ghosting is the phenomenon of seeing a second false image next to the real one. Most of these vision complaints will alleviate with time but in some cases, they may persist indefinitely and affect the overall quality of vision.

Keep in mind that LASIK is an elective procedure, this means that it is not a necessary treatment and always consider other safe and effective nonsurgical alternatives. Make sure that when you decide to undergo the LASIK surgery, it is your own decision and that you have been advised by a professional and understand all the risks that come with the surgery. We encourage all patients do read up on more information on the surgery from credible sources and consult with your eye doctor to learn about the procedure as much as possible. Two of the most important factors that should be taken seriously before making the decision is the visual outcomes and the potential LASIK complications. Make sure your doctor has your full medical records to fully assess your risks and see if you could be a suitable candidate for the LASIK surgery. Additionally, choosing a reputable, experienced surgeon could also lower the risks of complications.