What Every Doctor
Wants To Know

Helpful General Information
  1. CPT Code 92140 – Test description: Provocative tests for glaucoma w/interpretation & report
  2. ICD-9 Code example 365.00 (pre-glaucoma unspecified)
  3. Does not require a modifier
  4. Normal eye pressure should be between 8 – 20
  5. Results over 21 should be referred to a specialist
Key Benefits
  • Takes 2-3 minutes to complete
  • Test is administered over the eyelid
  • Can be administer by Medical Staff
  • No Contact with the cornea
  • No anesthesia drops
  • No risk of infecting
  • No Consumables
  • No need to take out contacts
  • No sterilization needed
  • No need to adjust with pachymetry
Patient Criteria
  • Anyone over 50 years of age
  • Anyone with a history (or family history) of glaucoma or diabetes
  • African American over 40 years of age

The ONLY Over the Eyelid Tonometer for testing Glaucoma

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Diaton tonometer is the only one device for intraocular pressure measuring through the upper eyelid. It completely meets modern diagnostic equipment requirements.

Fields of diaton tonometer application

  • ophthalmology (including children’s)
  • general medical practice
  • optometry
  • neurology

Method for measuring the intraocular pressure through the eyelid and device for realizing the same are protected with the Patent of Russia No 2123798, United States Patent No US 6,394,954 ?1 and Patent of Japan No3593314.

Currently, transpalpebral scleral tonometry has no alternative and is the most optimum method when carrying out prophylactic medical examination of the population and in complicated clinical cases when the use of classical tonometry methods is impossible.

Innovative approach to IOP measurement opens up wide clinical possibilities and unquestionable advantages to the doctor and to the patient:

for the doctor:

  • accurate tonometry result,
  • wide clinical possibilities,
  • image of modern doctor and health center,
  • quickness and efficiency (no disposables, IOP measurement takes several seconds),
  • spectrum service spreading.

for the patient:

  • safety,
  • quickness,
  • comfort,
  • painless,
  • no necessity to take off contact lenses

Transpalpebral “diaton” tonometer is effective and irreplaceable in various situations:

  • screening examinations of the patients
  • IOP control during selection of adequate medicines
  • IOP measuring in the presence in a patient of chronical conjunctivitis, erosions, edema and cornea dimness
  • IOP measuring in patients after corneal surgeries
  • ophthalmotone day monitoring
  • IOP measuring in immobilized patients and in children
  • IOP measuring during contact correction (lenses are not taken out).
Features diaton Goldmann
Air-jet ?onopen i-care
No contact with the cornea +
Portability + + + +
Displays independence from cornea’s crookedness. +
Digital IOP indication + + + +
Measurement in sitting position + + + + +
Measurement in reclining position + + +
Short-time measurement + + +
Sterilization is not required + +
Anesthesia is not required + +

Comparison tests of diaton tonometer and Goldman tonometer are the evidence of high reliability of diaton tonometer displays.


Measurement range, mm Hg 5-60
Measurement error Limit of the admissible measurement error in the range, not more:
from 5 to 20 mm Hg – ±2 mm Hg;
from 20 to 60 mm Hg – ±10%
The time of a single measurement, s, not more 3
Supply voltage, V 3
Number of measurements using one battery set, not less 1500
Service life, not less 5
Weight, g 89
Dimensions, mm, not more 174 ? 26 ? 20