Eye Exam Tools and Equipment
Glossary of eye examination tools and equipment terms.
GDx
The GDx is a tool that uses laser to determine the thickness of the nerve fiber layer.
The GDx is a tool that uses laser to determine the thickness of the nerve fiber layer.
Exophthalmometer
An exophthalmometer is a tool used to measure reference points of the eye. Learn about this eye measurement tool.
An exophthalmometer is a tool used to measure reference points of the eye. Learn about this eye measurement tool.
Tonometer
A tonometer is used to measure the pressure inside the eye.
A tonometer is used to measure the pressure inside the eye.
Infrared Pupillometer
An infrared pupillometer is used to measure pupils.
An infrared pupillometer is used to measure pupils.
Dilation
Why do eye doctors dilate the eyes?
Why do eye doctors dilate the eyes?
Gonioscope
A gonioscope is used to view the front part of the eye between the cornea and the iris.
A gonioscope is used to view the front part of the eye between the cornea and the iris.
Ophthalmoscope
An instrument used in examining the interior of the eye.
An instrument used in examining the interior of the eye.
Corneal topographer
A corneal topographer projects a series of illuminated rings onto the corneal surface, which are reflected back into the instrument.
A corneal topographer projects a series of illuminated rings onto the corneal surface, which are reflected back into the instrument.
Manual keratometer
A keratometer is a medical instrument that uses corneal reflections to measure the curvature of the cornea to determine how flat or steep the cornea is compared to average or normal.
A keratometer is a medical instrument that uses corneal reflections to measure the curvature of the cornea to determine how flat or steep the cornea is compared to average or normal.
Amsler grid
The amsler grid is an easy screening test that can be performed at home.
The amsler grid is an easy screening test that can be performed at home.
Wavefront aberrometer
Scanning diagnostic instrument which uses wavefront technology to measure the wavefront errors (aberrations) of the eye.
Scanning diagnostic instrument which uses wavefront technology to measure the wavefront errors (aberrations) of the eye.
Slit Lamp
A slit lamp is a microscope with a light attached that allows the doctor to closely examine the eye.
A slit lamp is a microscope with a light attached that allows the doctor to closely examine the eye.
Snellen Eye Chart
A Snellen eye chart is the eye chart used by your eye doctor to check vision acuity.
A Snellen eye chart is the eye chart used by your eye doctor to check vision acuity.