News

• 30/Aug2021

  Reasons For The Measurement Error Of The Tonometer

  Patients. Nervousness, inability to relax the eyelids, inability to fixate in one eye, small eyelids, changes in corneal curvature, leukoplakia and other corneal surfaces are not smooth.

• 29/Aug2021

  Classification Of Tonometers

  Flattening type: flattening the convex surface of the cornea with a certain force without sinking, the eyeball volume changes very little, so it is less affected by the hardness of the eyeball wall.

• 28/Aug2021

  The Basic Structure Of A Tonometer

  A tonometer is an instrument that measures the intraocular pressure of a person. It can assist in the diagnosis of cataracts, glaucoma and other eye diseases.

• 27/Aug2021

  Principles Of Computer Refractometer

  It uses infrared light source and automatic fog vision device to relax the eyeball adjustment, and uses photoelectric technology and automatic control technology to check the diopter.

• 26/Aug2021

  Introduction To Refractometer

  ​The optometry instrument checks the convergence of light after it enters the eyeball. It uses the state of the emmetropia as the standard to measure the difference in vergence and dispersion betwe...

• 25/Aug2021

  Features Of Automatic Refractometer

  The digital refractometer has a touch LCD screen to display the refractive index, sugar content, and concentration. Built-in automatic constant temperature control, lightweight appearance, easy ope...

• 24/Aug2021

  The Principle Of Automatic Refractometer

  ​When light enters another transparent medium from one transparent medium, the phenomenon of refraction occurs. This phenomenon is caused by the different speeds of the light in various media.

• 23/Aug2021

  Keratometer Measurement Method

  The keratometer uses the reflective properties of the cornea to measure the radius of curvature of the cornea. Place an object of a specific size at a specific position in front of the cornea, and ...

• 22/Aug2021

  The Role Of Optical Keratometer

  During the fitting process of contact lenses, the base curve of the lens can be selected according to the radius of curvature of the principal meridian of the anterior surface of the cornea of the ...