NBEO PART II EXAMINATION LIST OF CLINICAL ABBREVIATIONS (sorted alphabetically) AC/A accommodative convergence/accommodation DS diopter sphere AC IOL anterior chamber intraocular lens DSAEK Descemet stripping automated endothelial keratoplasty ACE angiotensin-converting enzyme ED effective diameter ADD attention deficit disorder ELISA enzyme-linked immunosorbent assay ADHD attention deficit hyperactivity disorder EOM extraocular muscle ARMD age-related macular degeneration ER emergency room BD base down ERG electroretinography BI base in ESR erythrocyte sedimentation rate b.i.d. twice a day F Fahrenheit BO base out FA fluorescein angiography BP blood pressure FDT frequency-doubling technology bpm beats per minute FT flat top BU base up FTA-Abs fluorescent treponemal antibody absorption test BVA best or best-corrected visual acuity FTFC full to finger counting CBC complete blood count GP CL gas permeable contact lens C/D cup-to-disc ratio GERD gastroesophageal reflux disease CF counting fingers gm gram cm centimeter gt. drop (gutta) CL contact lens gtt. drops (guttae) CN cranial nerve h hour COPD chronic obstructive pulmonary disease h.s. at bedtime CPAP continuous positive airway pressure H horizontal cpm cycles per minute HA headache CSF cerebrospinal fluid HgbA1c hemoglobin A1c or glycosylated hemoglobin CT computed tomography HIV human immunodeficiency virus d day HLA-B27 human leukocyte antigen B27 D diopter HM hand motion DBL distance between lenses HRR Hardy, Rand and Rittler DC diopter cylinder HRT Heidelberg retinal tomograph Dk permeability coefficient IM intramuscular NBEO PART II EXAMINATION LIST OF CLINICAL ABBREVIATIONS (sorted alphabetically) IOL intraocular lens PAL progressive addition lenses IOP intraocular pressure PC IOL posterior chamber intraocular lens IU international units PD pupillary distance IV intravenous PERRL pupils equal, round and reactive to light K keratometry reading PET positron emission tomography LASEK laser-assisted subepithelial keratomileusis PH pinhole LASIK laser-assisted in-situ keratomileusis PHNI pinhole no improvement MEM monocular estimation method PMMA polymethyl methacrylate mg milligram p.o. by mouth (per os) ml milliliter ∆ prism diopter mm millimeter PRA positive relative accommodation mmHg millimeters of mercury PRK photorefractive keratectomy MRA magnetic resonance angiography PRN as needed (pro re nata) MRI magnetic resonance imaging PVD posterior vitreous detachment MRSA methicillin-resistant Staphylococcus aureus q each, every (quaque) NaCl sodium chloride q.i.d. four times a day NaFl fluorescein sodium RAPD relative afferent pupillary disorder NKDA no known drug allergies RK radial keratotomy NKMA no known medical allergies RPE retinal pigment epithelium NPC near point of convergence RPR rapid plasma reagin NLP no light perception Rx prescription NRA negative relative accommodation SCL soft contact lens NS nuclear sclerosis STAT immediately NSAID non-steroidal anti-inflammatory drug TBUT tear break-up time OCT optical coherence tomography t.i.d. three times a day OTC over the counter ung ointment OD right eye (oculus dexter) UV ultraviolet ONH optic nerve head V vertical OS left eye (oculus sinister) VA visual acuity OU both eyes (oculi uniter) VEGF vascular endothelial growth factor NBEO PART II EXAMINATION LIST OF CLINICAL ABBREVIATIONS (sorted alphabetically) VF visual field YAG yttrium aluminum garnet