I’m glad your eyes are good, especially at your young prime-of-life age.
The reflectors should not be showing black. It sounds like you need new lighting modules. However, if the black showing is as in the modules in the attached link, it’s not on the reflectors and not a problem.
http://www.automotix.net/usedautoparts/1998-volvo-s70-headlight-inventory.html
Other things to check are the vlotage at the light sockets and the condition of the light sockets. The amount of light being produced is directly affected by the voltage. If theres some resistance in the circuit for some reason, like a bad connection or wire, that resistance will “drop” voltage, leaving less available for the lights. That condition would need to be diagnosed and corrected. It could be a simple connector. Corrosion in a connector equals resistance in a connector. It too will reduce the voltage to the bulb.