Q: What are the chances of LASIK Eye Surgery creating 20/40 vision percentage or better on both eyes, for a patient over the age of 35 with a Myopic or Hyperopic disease? A: Over 90, up to 99, depending on multiple details. Andrew Caster, MD

Q: My wife had the lasik proceedure costom vue/mono (one eye) 3 days ago her vision continues to be double vision. the doctor says this is normal and will improve with time. is this normal? I'm a bit concerned. A: It is normal. Andrew Caster, MD

Q:  I am nearsighted. I currently use monovision contact lens correction. When I do not wear any contacts or glasses, my close vision (for reading) is 20-20. Will the correction of my nearsightedness (about 20-175 I think) make me have to wear reading glasses? A: Yes. If you have monovision Lasik, it will be similar to wearing the contact lenses. Andrew Caster, MD

Q: I am myopic with a power of -3.0/-3.25. I also suffer from problem of retinal holes and have had cryo and laser treatment done 4 times in the past. would you recommend LASIK for me to get rid of my specs/ lenses ? A: I would recommend a thorough evaluation by a reintal specialist. As long as there are no other retinal spots that need treatment, then Lasik is fine for you. Andrew Caster, MD

Q:  I have around 1000 short-sight, I know that if I take the LASIK operation, my night-vision will be very likely to degrade. However, I can't image how will the picture I will be seen. Is it possible to give a picture about this? A: Unfortunately, it is not possible to simulate the results. Andrew Caster, MD

Q: I had LASIK surgery in 1997, with a "touch-up surgery one year later. I was exremely nearsighted, with a -14 in one eye and -15 in the other, so this surgery was truly a miracle for me. My vision aferwards was about 20/25, with night vision somewhat worse, but I was very happy with the outcome. Now, my vision has worsened to the point where I have to wear glasses much of the time , even to read words on a TV screen not far away. Do I need surgery again? Is this normal for someone who started out so nearsighted? I am 43 and am also having the beginnings of presbyopia. Thank you very much. A: You may have gotten a little more nearsighted, so you may need a touch-up. Andrew Caster, MD

Q: May i know what is the advantage of having a lASIK comparing to PRK A: The main advantage is speed of visual recovery. Andrew Caster, MD

Q: Almost 4 years ago I had lasik done (one eye for reading and one for distance) in Camarillo, as was close to 20/20 afterwards. I am 50 years old now. Lately, I have noticed that my vision appears to be weaker/blurier at night. My question is: does lasik "wear out" or weaken over time? Is it possible that another procedure would be required? Thanks you A: Another porcedure may be required. Lasik does not "wear out", but you are certainly getting older. Andrew Caster, MD

Q: I had Lasik surgery 4 years ago to correct nearsightness and astegmatism. I ended up with 20/40 vision and had a second surgery on both eyes after 3 months. Now I have had to start wearing glasses to drive and over the last couple of months my vision appears worse. What is the percntage of this happening after 4 years? A: It is very rare, but does happen in some cases. Andrew Caster, MD

Q: What are the pro's and con's of LASIK vs. PRK (LASEK?)? Specifically, for myself with myopia in the 6 diopter range (plus astigmatism), and normal cornea thickness which procedure would you tend to favor and why? A: I would tend to favor Lasik due to its faster healing time. Risks are slightly different but similar in degree and frequency. Andrew Caster, MD