4.2 Charting Conventions, Scribing & the Electronic Medical Record

Key Takeaways

  • An entry that is not documented did not happen; every test needs a value, the method used and the conditions.
  • Visual acuity must be recorded with the distance, the correction state and whether a pinhole was used.
  • Corrections to a paper record use a single line through the error, the correct entry, initials and the date — never obliteration.
  • A scribe documents what the provider says and does, must identify themself in the note, and the provider must review and attest to it.
  • Copy-forward and templated text in an electronic record propagate stale findings and are a recognised documentation hazard.
Last updated: September 2026

What a complete entry contains

A measurement in an ophthalmic chart is incomplete without three things: the value, the method, and the conditions. "IOP 24" is nearly useless; "IOP 24 mmHg OD, 18 mmHg OS by Goldmann applanation at 10:40, CCT 610/608 µm" is actionable.

TestMust also record
Visual acuityDistance, correction state (cc/sc), pinhole result, eye
Low vision acuityTest distance for counting fingers, direction for hand motion, projection quadrants for light perception
Intraocular pressureMethod, time of day, central corneal thickness if known
PupilsSize in light and dark, shape, direct and consensual reaction, presence and log-unit size of an RAPD
MotilityDistance and near, with and without correction, prism dioptres and direction
RefractionWhether manifest or cycloplegic, agent and time if cycloplegic, vertex distance if over ±4.00 D
Visual fieldInstrument, strategy, stimulus size, reliability indices
Drops instilledDrug, concentration, eye, time, and who instilled it

Acuity notation

Record the smallest line read and the number of letters missed or gained, for example 20/40 −2 (two letters missed on the 20/40 line) or 20/30 +1. Where the patient cannot read the largest optotype, move in order: counting fingers with the distance stated ("CF at 2 ft"), hand motion ("HM at 1 ft"), light perception with projection ("LP with projection in all four quadrants"), light perception without projection, and no light perception (NLP). NLP is a medico-legally significant finding and should be confirmed carefully with the fellow eye fully occluded in a darkened room.

Always note the correction state: sc (without correction), cc (with correction), and whether the correction was the patient's habitual spectacles or a trial frame. A pinhole acuity that improves suggests uncorrected refractive error or media irregularity; one that does not improve points to pathology.

Legal conventions for corrections and late entries

The medical record is a legal document.

  1. Never obliterate. On paper, draw a single line through the error so the original remains legible, write the correction, and add your initials and the date. Do not use correction fluid, do not scribble out, do not erase.
  2. Late entries are labelled as such, with the date and time the entry is made as well as the date and time of the event.
  3. No blank space — draw a line through unused areas so nothing can be inserted later.
  4. Sign every entry with your name and credential (for example "J. Alvarez, COMT").
  5. Electronic records keep an audit trail; amendments must be made through the amendment function, never by altering the original.
  6. Document refusals and no-shows, including that the risk was explained.

Scribing

Scribing appears explicitly in the Medical Ethics, Legal and Regulatory Issues content area. A scribe documents, in real time, what the provider says, sees and does. The essential boundaries:

  • The scribe records; the scribe does not decide. A scribe may not independently interpret findings, select diagnoses or generate orders.
  • The scribe must be identifiable in the note: the entry is signed by the scribe with their name and role, and states that the note was recorded on behalf of the named provider.
  • The provider must review and attest, typically with a statement that they reviewed the documentation and it accurately reflects the encounter, followed by their signature.
  • Findings the technologist personally performed (acuity, pressure, motility) are documented and signed as the technologist's own work, not as scribed content.
  • Patients should be told a scribe is present and may decline.

A COMT scribing for a busy clinic is a quality control point: if the dictated finding contradicts the measured data on the sheet in front of you, raise it at the time rather than recording a contradiction into the chart.

Electronic medical record hazards

Electronic records solve legibility and create four new failure modes the blueprint expects you to recognise:

  1. Copy-forward. Carrying yesterday's examination into today propagates findings that are no longer true. A patient can accumulate a documented cataract in an eye that has been pseudophakic for three years.
  2. Templated defaults. A template that pre-populates "pupils equal, round, reactive to light and accommodation" documents a test nobody performed. Never leave PERRLA as a default; record what was actually assessed.
  3. Wrong-patient and wrong-eye entry. Two charts open at once is the classic setup. Confirm two patient identifiers before entering data, and confirm laterality against the patient rather than the schedule.
  4. Alert fatigue. Dismissing drug-interaction and allergy warnings by reflex defeats the safeguard.

Confidentiality in daily practice

Protected health information includes the appointment list on the front desk monitor, the name called out in the waiting room, and the chart left open on a workstation. Practical rules: log off or lock every workstation when you step away, angle screens away from public view, do not discuss patients in corridors, lifts or the staff cafeteria, release records only with written authorisation or an established treatment relationship, and access only the records you need for your role. Curiosity access to a colleague's or a public figure's chart is a firing and reporting offence even if nothing is disclosed.

Test Your Knowledge

A technologist writes an intraocular pressure in the wrong patient's paper chart. What is the correct way to fix it?

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Test Your Knowledge

Which acuity entry is complete?

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Test Your Knowledge

Which action falls outside a scribe's role?

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Test Your Knowledge

Why is the copy-forward function in an electronic record considered a documentation hazard?

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Test Your Knowledge

A patient cannot read the largest optotype at 20 feet. What is the correct next step in recording acuity?

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