ALL-IN-ONE AUTOREFRACTOR, KERATOMETER AND NON-CONTACT TONOMETER (TOPCON TRK-1P)
The All-in-One AutoRefractor, Keratometer and Non-Contact Tonometer is an instrument used to quickly estimate a person’s refractive error. The numbers are used as a starting point to determine eyeglass and contact lens prescriptions.
This measurement is achieved by measuring how light is changed as it bounces off the back of a person’s eye. The automated refraction technique is quick, simple and painless. No feedback is required from the patient during this process.
The auto-keratometer-tonometer is used to determine the shape of the cornea. It does this by looking at the reflection of light off of the cornea at different points. These measurements are used to diagnose conditions such as astigmatism, keratoconus, corneal scarring and corneal distortion. A keratometer is also used to fit contact lenses as well. The combined measurements become a starting point in determining your spectacle and contact lens prescription.
Most patients remember the air puff from previous eye exams. The non-contact tonometer is used during your eye exams to measure your intraocular pressure. This testing is important in detecting glaucoma. The air puff test is much less invasive than other methods of measuring eye pressure. Other clinics use contact tonometers. Contact tonometers are probes that make contact with the cornea. This method requires the use of anesthetics. The air puff test is much quicker and more pleasant than alternate methods. It is the best way to ensure this very important test is performed.