Yes. Contact lens check-ups are designed to check the condition of the front surface of the eye that’s in contact with the lens, and to check the quality of your vision with your lenses in. A contact lens check-up doesn’t measure the health of the inner and outer parts of your eye, so it’s important to go for an eye test as well. The back of your eyes can be affected by a number of eye conditions and though they’re uncommon, they might be picked up much earlier through a sight test rather than waiting for symptoms to occur.