NAH. You are so wrong. If we give patients the prescription that they are most Comfortable with then what for train optometrists?
Many Ah tiong Patients that i see always ask me to give them a lower prescription even when they are seeing 6/9 or worse. This is because of a wrong mindset. Their doctors over in Ah tiong land told them that if a full prescription was given to them, their prescription will increase as the year go by. This is a false perception of the public.
Similarly, If a patient prefers a OVER-corrected prescription, WE CANNOT GIVE IT TO THEM.

This is because an over corrected near sighted (myopia) prescription sets of the focusing muscles in the eye and strains it. Research studies have shown that this Strain caused on the muscles is one of the possible factors leading to the development of myopia. This is especially true in young children because of the very active muscle in the eye. This can potentially cause them to be severely myopic in the future. Thats why you must always trust your optometrist on your prescription.
However, human do make errors. That is why our patients response is very important when checking their prescription. you must voice out any discomfort and the optometrist will adjust accordingly. that is why frequent eye checks is required. Most commonly, once a year so potentially blinding diseases can also be detected early.