TonoCare - Wireless Non Contact Tonometer


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According to The WHO, Glaucoma is the second leading cause of blindness globally.

The WHO also reported that at present over 8 million people are bilaterally blind due to glaucoma, a figure that is set to rise to over 11 million by 2020 with the increasing prevalence, unless improved screening and effective treatment strategies are successful.

As a leader in the field of Tonometry and with a heritage of producing high quality tonometers, we at Keeler believe we play a pivotal role in the detection of Glaucoma by producing the highest quality products at affordable prices for all clinicians throughout the world.

Keeler’s latest Tonometer was designed to consider all the different environments clinicians face all over the world. The long-lasting battery, compact design and the portability of the device enables it to be used in a small practise room, domiciliary use or even large scale screening programs. However, our key targets which we believe will play a pivotal role in increasing detection rates of Glaucoma were: - 



The Tonocare has been through a rigorous testing protocol to compare closely to GAT. The heavy investment into the dynamic puff control enable the tonometer to produce accurate and consistent measurements which in turn will enable users to confidently monitor changes in IOP over time.


Our aim was to ensure all clinicians all over the world could afford to use the device with little burdening costs on either their practise or the patient, inherently this would ensure detection of the second leading cause blindness to increase.


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What’s in the Box




Power supply kit

USB cable

Instruction USB

Rubber eyepiece

Wall mount kit


• Usage cost
   The Tonocare makes use of no consumables which means no sterile consumables are required, keeping ongoing costs to a minimum.

• Accuracy
   The Tonocare was clinically compared to the GAT and testing showed that the Tonocare is comparable, consistent and repeatable.

• Ease of use
   The Tonocare makes use of an intuitive head up display which enables you to be in the right position during every measurement to ensure accurate measurements.

• Speed of use
   Tonocare is ready to use in less than 10 seconds after being switched on; readings for both eyes can be achieved in 30 seconds.

• Patient comfort
   Keeler’s most portable NCT allows measurements to be taken wherever the patient is most comfortable; whatever environment they are in.

Tonocare System  
Measurement Range 5mmHg to 50mmHg
Equipments Standard Tested to BS EN ISO 8612 (comparable to Goldman Style Tonometer)
Extra running costs None
Supine position functionality Yes
Domiciliary use Yes
Corneal Thickness correction Yes
Caliberation test capability Yes
Computer connection Yes (via USB)
Fixation target Yes
Consistency indicator Yes
Printer Yes
Wall mountable Yes
Input Voltage Range 100-240V (50/60Hz)
Hand unit dimensions  
Width 136mm
Height 220mm
Weight 1.0kg
Docking station dimensions  
Width 155mm
Depth 183mm
Height 153mm
Warranty 2 Years
  1. Does  the  Tonocare  measure  Central  Corneal  Thickness  (CCT)? 
    No,  the  Tonocare  does  not  measure  CCT  but  it  is  able  to  automatically  compensate  for  a  known  CCT.
  2. How  long  does  a  single  charge  last? 
    The  Tonocare  will  last  at  least  a  full  day  of  use.
  3. Can  the  Tonocare  be  used  for  domiciliary  use?   
    Yes,  the  Tonocare  is  Keeler's  most  portable  tonometer  ever  and  is  perfect  for  domiciliary  use.  We  often  find  users  take  the  Tonocare  from  visit  to  visit  or  from  room  to  room  without  the  need  of  the  dock  or  charging  kit.   
  4. How  does  the  Tonocare  compare  to  the  GAT? 
    The  Tonocare  was  clinically  compared  to  the  GAT  and  testing  showed  that  the  Tonocare  is  comparable,  consistent  and  repeatable.
  5. Can  you  mount  the  Tonocare  on  a  wall  and  how  much  space  does  the  device  take  up? 
    The  Tonocare  kit  comes  with  its  own  docking  station  which  can  be  mounted  on  a  wall  and  charges  the  device.  The  dock  and  Tonocare  have  a  small  footprint  and  perfect  for  a  small  clinical  environment,  160  x  180  x  150mm  (H  x  D  x  W).

  6. Does  the  Tonocare  require  any  ongoing  consumables?   
    No,  the  Tonocare  requires  no  consumables  to  operate.  However,  you  may  need  to buy  a  reel  of  paper  for  the  printer  every  so  often.
  7. Can  I  connect  the  Tonocare  to  my  PC? 
    Yes,  you  can  download  the  Tonocare  Connect  software  from  the  Tonocare  webpage  which  allows  you  to  download  IOP  readings  to  your  PC  and   then  generate  a  report  for  your  documentation.    
  8. How  often  will  I  need  to  calibrate  my  Tonocare? 
    We  recommend  a  yearly  service  from  your  local  distributor,  but  you  can  conduct  a  self-check  through  the  menu,  the  self-check  function  will  tell  you  if  your  Tonocare  is  performing  to  the  standard  we  expect. 
  9. How  does  the  Tonocare  puff  strength  compare  to  conventional  NCT's?
    A  significant  amount  of  engineering  effort  has  taken  place  to  ensure  a  consistently  soft  puff.  The  Tonocare  is  changing  the  way  we  screen  for  Glaucoma  with  soft  puff's  and  more  reliable  measurements.   

  10. Can  I  use  my  Keeler  power  supply  with  the  Tonocare? 
    Yes,  the  Tonocare  uses  the  same  power  supply  which  is  used  on  all  Keeler  products.  
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