Ophthalmic medical device, namely, glaucoma tube shunt; surgical apparatus and instruments for use in ophthalmic surgery; medical device for non-laser glaucoma surgery; ocular implants and devices; ocular implants and devices for use in treating glaucoma; ocular implants and devices, namely, shunts, stents, ophthalmic cutting instruments, shunt and stent applicators, and vision screening instruments, for use in treating glaucoma