The TCP-4042 is an automated chart projector for effective refraction examinations and visual acuity assessment. It features 42 examination charts covering all the basic needs of modern ophthalmic and optical examination. Beyond classic visual acuity optotypes, it includes specialised tests for astigmatism, binocular balance, fixation disparity, fusion and stereoscopic vision. Can operate independently with the Trial Frame 10 and Trial Lens Set 266, and is fully compatible with the TAP-2000.