State-of-the-Art Instrumentation

Centre for Eye Health provides access to the latest diagnostic instrumentation for assessing the structural and functional integrity of the eye and visual pathways.

Below is a list and brief description of the instrumentation currently available for use upon referral by registered eye-health practitioners. It is envisaged that additional equipment will be purchased during the future operation of the Centre.

CFEH Instrument list

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Canon Fundus Photography

Specific Instrument: CF-1 mydriatic and CR-1 non-mydriatic fundus cameras

Measures/Output: En face colour fundus images

Sample clinical use: Stereoscopic viewing of the optic nerve head, imaging of retinal and choroidal pathology

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Confoscan Corneal Assessment

Specific Instrument: Nidek Confoscan 4

Measures/Output: En face confocal microscopy of the cornea with up to 500x magnification

Sample clinical use: Epithelial/total corneal thickness, corneal substructure and morphology, endothelial cell count

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Diagnosys Electrophysiology Suite

Specific Instrument: Diagnosys

Measures/Output: Electrophysiological assessment of the retina (ERG) and visual pathways (VEP) using full-field and multifocal stimulation

Sample clinical use: Retinal dystrophies, visual pathway lesions

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GDx Scanning Laser Polarimetry

Specific Instrument: GDx Pro

Measures/Output: Peripapillary retinal nerve fibre layer thickness with ECC and VCC options

Sample clinical use: Glaucoma, optic neuropathies

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Haag-Streit Digital Goldmann Tonometry

Specific Instrument: AT 900D

Measures/Output: Goldmann tonometry to 0.5mmHg with digital output

Sample clinical use: Intraocular pressure measurement

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Haag-Streit Optical Biometry Using Partial Coherence Interferometry

Specific Instrument: Lensstar

Measures/Output: Axial length, corneal thickness, anterior chamber depth, crystalline lens thickness, vitreous chamber depth, retinal thickness, IOL power

Sample clinical use: Assessment for cataract surgery, glaucoma, myopia progression

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Haag-Streit Pachymeter

Specific Instrument: Haag-Streit OLCR pachymeter

Measures/Output: Corneal thickness to one micrometer accuracy using an interferometry technique

Sample clinical use: Central corneal thickness

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Haag-Streit Video Slit Lamp Imaging

Specific Instrument: Haag-Streit BQ 900 video slit lamps and Haag-Streit BX photographic slit lamp

Measures/Output: Video and still digital imaging of the anterior segment

Sample clinical use: Imaging pathology of the anterior segment of the eye

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Heidelberg HRT3 Corneal Assessment

Specific Instrument: HRT III with Rostock Cornea Module

Measures/Output: En face confocal microscopy of the cornea

Sample clinical use: Epithelial/total corneal thickness, corneal substructure and morphology, endothelial cell count

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Heidelberg HRT3 Glaucoma Assessment

Specific Instrument: HRT III with glaucoma module

Measures/Output: Confocal microscopy of the optic nerve head, optic nerve head morphology, peripapillary retinal nerve fibre layer thickness

Sample clinical use: Glaucoma, optic neuropathies

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Heidelberg Optical Coherence Tomography

Specific Instrument: Spectralis OCT

Measures/Output: Retinal/macula/optic nerve head cross-section and morphology, macular thickness, peripapillary retinal nerve fibre layer thickness, fundus auto-fluorescence

Sample clinical use: Age-related macular degeneration, diabetic retinopathy, glaucoma, retinal dystrophies

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Humphrey Visual Field Analysis

Specific Instrument: HFA Model 750

Measures/Output: Sensitivity of the visual field using white-on-white or blue/yellow stimuli plus GPA analysis

Sample clinical use: Glaucoma assessment, pathology of the anterior and posterior visual pathways

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Humphrey Matrix Perimetry

Specific Instrument: Matrix

Measures/Output: Sensitivity of the visual field using frequency-doubling stimuli

Sample clinical use: Glaucoma assessment, pathology of the anterior and posterior visual pathways

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iCare Tonometer

Specific Instrument: iCare rebound tonometer

Measures/Output: Intraocular pressure measurement without corneal anaesthesia

Sample clinical use: Glaucoma assessment

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ImagineEyes Wavefront Aberrometry

Specific Instrument: IRX3

Measures/Output: Total eye refractive aberrations expressed in Zernike coefficients, modulation transfer and point spread function, Strehl ratio

Sample clinical use: Assessment for, and post-operative management of, refractive/cataract surgery, keratoconus

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Keeler Wireless Binocular Indirect Ophthalmoscopy

Specific Instrument: Keeler Vantage wireless and video LED binocular indirect ophthalmoscopes

Measures/Output: Imaging of the posterior eye and ability to record results using video technology

Sample clinical use: Assessment of the retina

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Medmont Corneal Topography

Specific Instrument: E300

Measures/Output: Corneal topography and curvature variations across the corneal surface

Sample clinical use: Keratoconus, corneal graft, pterygium

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Oculus Pentacam Scheimpflug Photography

Specific Instrument: Pentacam HR

Measures/Output: Anterior chamber cross section and volumetric assessment, total corneal pachymetry, corneal aberration analysis, crystalline lens densitometry

Sample clinical use: Keratoconus, corneal dystrophies, glaucoma assessment, cataract surgery assessment

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Optomap Wide-Field Fundus Photography

Specific Instrument: Optomap P20MA

Measures/Output: Wide-field fundus photography

Sample clinical use: Diabetic retinopathy, peripheral retinal disorders, choroidal nevi/melanoma

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Optovue Optical Coherence Tomography

Specific Instrument: Optovue

Measures/Output: Anterior segment/retinal/macula/optic nerve head cross-section and morphology, macular thickness, peripapillary retinal nerve fibre layer thickness

Sample clinical use: Lasik, keratoconus, age-related macular degeneration, diabetic retinopathy, glaucoma, retinal dystrophies

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Pascal Tonometer

Specific Instrument: Pascal dynamic contour tonometer

Measures/Output: Measures intraocular pressure by a method which reduces the effect of corneal properties on the measurement

Sample clinical use: Glaucoma

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Pachmate Ultrasonic Pachymetry

Specific Instrument: DGH pachmate

Measures/Output: Total corneal thickness

Sample clinical use: Glaucoma assessment, corneal disorders

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Tomey A-Scan and B-Scan Ultrasonography

Specific Instrument: UD-6000a

Measures/Output: A-Scan biometry and B-Scan eye cross-section/morphology

Sample clinical use: Assessment for cataract surgery, posterior eye tumours, optic disc drusen