don't fixate on the results of the visual field test - most small optometrists are not set up with ideal lighting and noise reduction - very easy to get distracted. it's definitely worth getting it done, but if they opto says you have some anomalies and wants to send you for full test (basic test has you just doing test, full test dialates your pupils with drops etc for the test), just go with it. i had bad results for first VFT - i had no idea what it was going in, and appeared to have massive blind spots which i couldn't tell myself. went to an opthamologist down in Melbourne, had eyes dialated and did the test again, all fine.