You can book your theory test online through myCDC mobile app or website booking portal upon successful registration, with a valid eyesight test record.
For foreign licence conversion, eyesight test is not required unless you are holding a Work Permit or S-Pass.
You may register as a private candidate via online enrolment for the e-trial package or make an e-appointment to register the account in-person without any e-Trial tests. You are required to register for an account in order to book your Traffic Police Test(s).
To take the theory test as a school candidate, please read the following article - How to Book for Theory Test as a School Candidate?