| Abbreviation
|
Term
|
Description (notes)
|
| AC
|
Anterior chamber
|
fluid-filled space between the iris and the endothelium
|
| AC 4/4
|
Grade 4 anterior chamber angle
|
open angle between cornea and iris
|
| AC 3/4
|
Grade 3 anterior chamber angle
|
|
| AC 2/4
|
Grade 2 anterior chamber angle
|
|
| AC 1/4
|
Grade 1 anterior chamber angle
|
|
| AC 0/4
|
Grade 0 anterior chamber angle
|
closed angle between cornea and iris
|
| AC/A
|
Accommodative convergence / Accommodation ratio
|
the portion of the range of convergence that occurs in response to accommodation
|
| Acc
|
Accommodation
|
process of changing optical power to maintain focus as distance changes
|
| Ad
|
Advised
|
|
| Add
|
Addition
|
|
| AIT
|
After-image transfer
|
|
| ALT
|
Alternating
|
|
| ALT ET/SOT
|
Alternating esotropia
|
|
| ALT XT/XOT
|
Alternating exotropia
|
|
| ARC
|
Anomalous retinal correspondence
|
|
| A/V
|
Arteriole–venue ratio
|
|
| BIO
|
Binocular indirect ophthalmoscopy
|
|
| BSV
|
Binocular single vision
|
|
| BV
|
Binocular vision
|
|
| BVD
|
Back vertex distance
|
|
| BVP
|
Back vertex power
|
|
| CD
|
Centration distance
|
|
| C/D
|
Cup–disc ratio
|
|
| CF
|
Count fingers vision – state distance
|
|
| c/o or c.o.
|
Complains of
|
|
| CT
|
Cover test
|
|
| c/u
|
Check up
|
|
| CW
|
Close work
|
|
| Δ
|
Prism dioptre
|
|
| D
|
Dioptres
|
|
| DC
|
Dioptres cylinder
|
|
| DNA
|
Did not attend
|
|
| DOB
|
Date of birth
|
|
| DS
|
Dioptres sphere
|
|
| DV
|
Distance vision
|
|
| DVD
|
Dissociated vertical deviation
|
|
| EF
|
Eccentric fixation
|
|
| FB
|
Foreign body
|
|
| FD
|
Fixation disparity
|
|
| FF
|
Foveal fixation
|
|
| FHG
|
Family history of glaucoma
|
|
| FMH
|
Family medical history
|
|
| FOH
|
Family ocular history
|
|
| F/U
|
Follow up appointment
|
|
| GH
|
General health
|
|
| G(M)P
|
General (medical) practitioner
|
|
| HA
|
Headaches
|
|
| HARC
|
Harmonious abnormal retinal correspondence
|
|
| HM
|
Hand motion vision – state distance
|
|
| Hx
|
History
|
|
| IOL
|
Intra-ocular lens
|
|
| IOP
|
Intra-ocular pressure
|
|
| ISNT
|
Inferior, Superior, Nasal, Temporal
|
rule used to assess optic disc appearance
|
| K
|
Keratometry
|
|
| OS
|
oculus sinister (left eye)
|
|
| LHyperT or LHT
|
Left hypertropia
|
|
| LHypoT
|
Left hypotropia
|
|
| LO
|
Lenticular opacity
|
|
| L/R FD
|
L/R fixation disparity
|
|
| L/R
|
L hyperphoria
|
|
| Left ET
|
Left esotropia
|
|
| LVA
|
Low vision aid
|
|
| MDU
|
Mallett distance unit
|
|
| MNU
|
Mallett near unit
|
|
| M.Wing
|
Maddox Wing
|
|
| MR
|
Maddox rod
|
|
| NB: NAD
|
No abnormality detected
|
(is frequently used but is not recommended)
|
| NCT
|
Non-contact tonometer
|
|
| ND
|
Neutral density filter
|
|
| NLP
|
No light perception
|
No light perception is considered total visual impairment, or total blindness; see Visual impairment#Classification
|
| NPC
|
Near point of convergence or no previous correction
|
|
| NRC
|
Normal retinal correspondence
|
|
| NV
|
Near vision
|
|
| NWT
|
Normal wearing time
|
|
| o symptoms
|
Zero symptoms
|
|
| ϕ
|
Horizontal orthophoria
|
|
| θ
|
Vertical orthophoria
|
|
| ⊕
|
Horizontal and vertical orthophoria
|
|
| OC's
|
Optical centres
|
|
| Occ.
|
Occupation
|
|
| OD
|
oculus dexter (right eye)
|
|
| OH
|
Ocular history
|
|
| OMB
|
Oculo motor balance
|
|
| ONH
|
Optic nerve head
|
|
| Oph
|
Ophthalmoscopy
|
|
| OS
|
oculus sinister (left eye)
|
|
| OU
|
oculus uterque (both eyes)
|
|
| PD
|
Pupillary distance
|
|
| PERRLA
|
Pupils equal, round, reactive to light and accommodation
|
|
| PH
|
Pinhole
|
see Pinhole occluder and Visual_acuity#Legal_definitions
|
| PHNI
|
Pinhole No Improvement
|
see Pinhole occluder and Visual_acuity#Legal_definitions
|
| PHVA
|
Pinhole Visual Acuity
|
|
| PL
|
Perception of light
|
|
| POH / PrOH
|
Previous ocular history
|
|
| PPA
|
Peri-papillary atrophy
|
|
| Pt
|
Patient
|
|
| RAPD
|
Relative afferent pupillary defect
|
|
| OD
|
Right eye (oculus dexter)
|
|
| Ret.
|
Retinoscopy
|
|
| RHyperT
|
Right hypertropia
|
|
| RHypoT or RHT
|
Right hypotropia
|
|
| RNFL
|
Retinal nerve fibre layer
|
|
| RPE
|
Retinal pigment epithelium
|
|
| RSOT
|
Right esotropia
|
|
| Rx
|
Prescription
|
|
| SE
|
Spherical Equivalent
|
|
| SLE
|
Slit lamp examination
|
|
| SLM
|
Slit lamp microscope
|
|
| EP
|
Esophoria
|
|
| ET
|
Esotropia
|
|
| Supp.
|
Suppression
|
|
| V
|
Vision (unaided)
|
|
| VA
|
Visual acuity
|
|
| VA Dcc - VA Dsc
|
Visual acuity with Distant chart with correctors
|
Visual acuity with eye chart at Distant 20 feet (6 m) and with (cc: Latin cum correctore) correctors (spectacles); Dsc is without (sc: Latin sine correctore) correctors. See Visual_acuity#Legal_definitions
|
| VA Nsc - VA Ncc
|
Visual acuity with Near chart without correctors
|
Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions
|
| VA OS
|
Left visual acuity
|
|
| VA OD
|
Right visual acuity
|
|
| VDU
|
Visual display unit
|
|
| VF
|
Visual field
|
|
| VPS
|
Variable prism stereoscope
|
|
| WD
|
Working distance
|
|
| X/12
|
X months
|
|
| X/52
|
X weeks
|
|
| X/7
|
X days
|
|
| XP
|
Exophoria
|
|
| XT
|
Exotropia
|
|