The answer is yes
Answer is yes, a close friend of mine had LASIK procedure to correct his -3 myopia in 2011, the following year 2012 August, he went in CAA for a class 1 medical without notifying them in the application form about his surgery, second phase into the eye test after reading out numbers on the wall, optometrist tried to look into the back of his eye ball under the slitlamp, took her 2 seconds to spot scar on his cornea. she told him straight away that she saw scars and asked if he had refractive surgery, after he admitted it she continued the whole eye test, and later he had to do another test called the contrast test only for those who had refractive surgery. After completing the rest of the medical examination he was told by doctor that failing to declare medical history is an offense, CAA takes this very seriously and then he received a court summon a month later, was charged with making false representation and was fined £1000.
So before you make an appointment for your class 1, make sure you have got all paper works from the surgeon stating every aspect of your refractive surgery, its totally not worth to risk it for a biscuit.