| Term | Definition |
| AC | AIR CONDUCTION |
| ACC | ACCOMMODATION |
| ACCOMMODATION | ADJUSTMENT OF THE EYE |
| ACHROMATOPSIS | COLOR BLINDNESS |
| AMBLYOPIA | DULL VISION |
| APHAKIA | WITHOUT LENS |
| BLEPHARECTOMY | SURGICAL EXCISION OF THE EYELID |
| BLEPHAROPLASTY | SURGICAL REPAIR OF THE EYELID |
| BLEPHAROPTOSIS | PROLAPSE OF THE EYELID |
| BLEPHARORRHAPHY | SUTURING OF THE EYLID |
| ANACUSIS | WITHOUT HEARING |
| CARARACTS | OPACITIES THAT FORM ON THE LENS |
| CERUMEN | EAR WAX |
| CILIARY MUSCLES | MUSCLES WHICH RELAX OR CONTRACT AND ALTER THE SHAPE OF THE LENS |
| COCHLEA | INNER EAR STRUCTURE |
| CONJUNCTIVITIS | INFLAMMATION OF THE CONJUNCTIVA, PINK-EYE |
| CORECTASIS | DILATION OF THE PUPIL |
| CORNEA | THE CLEAR, TRANSPARENT ANTERIOR PORTION OF THE COAT OF THE EYE |
| CYCLOPLEGIC AGENTS | AGENTS WHICH PARALYZE THE CILIARY MUSCLES IN THE DILATION OF THE PUPILS |
| D | DIOPTER(LENS STRENGTH) |
| DACRYOADENECTOMY | EXCISION OF A TEAR GLAND |
| DACRYOCYSTORHINOSTOMY | CREATION OF AN OPENING INTO THE NOSE FOR DRAINAGE OF TEARS |
| DACRYORRHEA | FLOW OF TEARS |
| DIPLOPIA | DOUBLE VISION |
| EAR CANAL | SLENDER TUBE LINES WITH GLANDS THAT LEADS TO THE MIDDLE EAR |
| ENT | EAR, NOSE, THROAT |
| ENUCLEATION | SURGICAL REMOVAL OF THE EYEBALL |
| EQUILIBRIUM | BALANCE |
| EUSTACHIAN TUBE | THE TUBE WHICH CONNECTS THE NOSE AND THROAT |
| GLAUCOMA | EYEBALL DISEASE CHARACTERIZED BY INCREASE PRESSURE WITHIN THE EYEBALL |
| INCUS | ONE OF THE THREE BONES OF THE MIDDLE EAR SHAPED LIKE ANVIL |
| IOP | INTRAOCULAR PRESSURE |
| IRIDECTOMY | EXCISION OF THE IRIS |
| IRITIS | INFLAMMATION OF THE IRIS |
| LABYRINTHITIS | INFLAMMATION OF THE INNER EAR |
| LACRIMAL | PERTAINING TO THE TEAR |
| MALLEUS | ONE OF THE THREE BONES OF THE MIDDLE EAR SHAPED LIKE A HAMMER |
| MASTOID | MASTOID PROCESS |
| MASTOIDOTOMY | INCISION OF THE MASTOID |
| MYDRIATICS | DRUGS THAT CAUSE DILATION OF THE PUPILS |
| MYRINGOPLASTY | SURGICAL REPAIR OF THE EARDRUM |
| MYRINGOTOMY | INCISION OF THE EARDRUM |
| NYCTALOPIA | NIGHT BLINDNESS |
| OLFACTORY | PERTAINING TO SMELL |
| OPHTHALMOPLEGIA | PARALYSIS OF THE EYE |
| OPTOMETRIST | ONE WHO SPECIALIZES IN EYE MEASUREMENT |
| OSSICLES | THREE TINY BONES IN THE MIDDLE EAR |
| OTALGIA | EAR PAIN |