So I went out for a night on the town, and I was a little bit buzzed but remember everything. I remember one guy almost hitting me in the face with a cigarette, but I am pretty positive nothing went ...
I don't think it's necessary but you may want to do it ever so often (not every time). I was told they can see the veins and any abnormalities that may indicate tumors. My doctor asked the first time I came in, but that was several years ago, I don't remember them asking every time.
They are looking to see if the insides of your eyes are healthy.
I always dilate my patients as it is standard of care. When I dilate I look for cataracts, nerve problems, retinal problems, or tumors. I found a tumor in a 9 year old one time so I always dilate kids or patients the 1st time I see them.
w/o a dilation pretty much all we can see of the inside of most people's eye is the "posterior pole". the central say 30%. thats fine to rule out macular degeneration and glaucoma and retinopathy USUALLY. but almost no retinal hole or tear or detachment occurs in that area of the eye. those are usually peripheral retinal problems.
so to answer the question...dilation is looking for PERIPHERAL retnal problems...like holes, tears, detachment, and yes, tumors. stuff that doesnt occur in the central 30%
Princeidoc is right (again). Dilation is important, especially for a new patient in an office. The thing about eyes, a lot of people aren't aware of, is that a few of the more serious conditions have absolutely ZERO symptoms. For example, high blood pressure, diabetes, clogged carotid arteries, small tissue tears/holes, tumors, etc. It's our responsibility as eye docs to fully examine you and catch these diseases if they're present. In order to do that, you need to be dilated.
I can't count the number of times a patient has come in and I've found bloody retinas or giant sausage-like blood vessels or retinal holes and the they think nothing is wrong. So, the take-home message here is.....get your eyes dilated at least every other year to check for these and other sneaky eye problems. It's $20 in prevention vs. thousands in surgery and possible loss of your sight.