scope:

This Standard, together with JIS T 15004-1, specifies minimum requirements and the design compliance procedure for tonometers intended for routine clinical use in the estimation of intraocular pressure (IOP) (hereafter referred to as "tonometers") and the single-use prisms for applanation tonometers which are single-use sterilized apparatus used in combination with applanation tonometers to evaluate a cornea contact surface.( hereafter referred to as "single-use prisms for applanation tonometers")

This Standard takes precedence over JIS T 15004-1, if differences exist.

NOTE 1 The true intraocular pressure is seldom directly measured since it would require invasion of the eye. Since the true lOP cannot be known, the instrument (Annex A) and method (Annex B) for determining a reference lOP are instead specified.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 8612: 2009 Ophthalmic instruments-Tonometers (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEC Guide 21-1.

Moreover, JIS T 7312: 2005 may be applied until March 31, 2018.