Guild of Oculists

The Guild of Oculists is a chartered examining body responsible for the certification, calibration, and periodic re-verification of sight within the Tower. It is not a guild of physicians. Its members do not treat the eye and are forbidden by their own charter from touching one; they inspect what the eye reports, and they issue certificates as to the reliability of that report. The distinction is set out plainly in the Guild's founding instrument, the Ordinance of the Examined Gaze, clause 2: "The Oculist shall regard the eye as an aperture and not as an organ, and shall concern himself with what passes through it."

The Guild maintains no register of persons with good sight or poor. It maintains a register of sightings — individual acts of seeing, each one numbered, witnessed, and filed. A citizen who wishes to rely on something they have observed in a dispute must first have that observation certified, and the certificate names the floor, the hour, the light, and the Oculist on duty. The system is cumbersome and is defended as such.

Structure and the Examining Benches

The Guild operates through Examining Benches, each attached to a landing or a reading room rather than to a building of its own. There are said to be forty-one Benches, though the Guild's own return for the year 14,209 lists thirty-nine, and the two missing Benches — the Seventh Landing Bench and the Bench of the Long Gallery — have not submitted accounts since the winter of 13,988, when the Long Gallery was reclassified as an aperture.

Seniority is by tenure at a Bench, not by rank. An Oculist who transfers loses all seniority and begins again at the lowest grade, a rule instituted after the Margin Commentators Guild successfully argued before the Concordance of Transfers that movement between Benches ought not to be penalised. The Reflector Guild, a sub-guild of the Theoretical Jurisprudence Guild, has twice petitioned for the rule's repeal on the grounds that it discourages exactly the movement the Tower requires; both petitions were answered with a note of receipt.

The Calibration of Lamps

Because sight is examined rather than corrected, the standard of comparison is not another eye but a flame. Each Bench maintains a calibrated lamp, its wick trimmed to a specification held at the Glasswrights' Guild and its oil drawn from a single reserve administered through the Inter-Guild Logistical Network Guild. An Oculist asks the subject to read a graded column of text at a stated distance from the lamp, then repeats the reading at half the distance, then reports both figures.

The lamps are recalibrated quarterly. In practice this means a great deal of the Guild's time is spent on wicks. A maintenance note appended to the Bench ledger of the Ninth Landing reads, in full: "Lamp 4 draws badly in damp. Do not use Lamp 4 for certification. Do not extinguish Lamp 4; it does not relight."

Dispute over the Standard of the Unlit Floor

The Guild's principal scholarly quarrel concerns the floors on which no lamp will burn, of which the Tower has an unknown number. The Third Concordance, Annex 9, holds that no sighting may be certified in the absence of a calibrated flame, and that observations made in unlit conditions are therefore inadmissible before any body that cites the Concordance. The Fourth Concordance, Annex 2, contradicts this directly, providing that an Oculist of not less than twelve years' tenure may certify a sighting in darkness "upon his own assurance, which shall be recorded and shall stand."

The contradiction has never been reconciled, and the Guild has adopted the practice of certifying in darkness under the Fourth and stamping the certificate with a note that it will not survive a challenge under the Third. Two Oculists of the Bench of the Lower Stacks were disciplined in 14,102 for certifying a sighting without the note; the sighting itself, a claim concerning a door that was not there in the morning, was subsequently upheld by the Guild of Stonemasons on independent grounds, and the Oculists were reinstated without comment.

Relations with Other Bodies

The Guild's certificates are accepted by the Guild of Formal Cartographers as evidence of a floor's appearance, and by the Constructivist Guild as evidence that a thing was seen before it was built. It works closely with the Guild of Oneirology, whose subjects see without a lamp and are therefore examined under the Fourth Concordance as a matter of course; the joint protocol between the two bodies, the Agreed Form for Nocturnal Sightings, is revised roughly every nine years and has never been ratified by the same two officers.

The Guild of Harmonic Theorists holds an unresolved grudge against the Guild of Oculists dating from 13,946, when an Oculist at the Bench of the Bell Landing certified that a Theorist had heard rather than seen a resonance, and thereby excluded her testimony from a hearing. The Theorists maintain that the certificate was procured in advance of the examination; the Oculists maintain that it was not; neither side has produced the Bench ledger for that quarter. It was, the Guild notes, a damp quarter.

Register and Recensions

The Register of Sightings is kept in the Scribes' Guild of the Middle Floors archive and is not open to consultation by the persons whose sightings it records. Copies may be requested, sealed, and forwarded; the request must be made in person, by a party who has already been certified as having seen the Register's door. The requirement is circular and the Guild is aware of it. A recension of 14,207 proposes a workaround by which the door may be certified by an Oculist who has seen it on a previous occasion, but the recension has not been carried.