Cornea Imaging and Testing
Cornea Service
Corneal Topography
Capture and analysis of the corneal shape is available through the Corneal
Service. Images are generated and analyzed on the TMS-1 system (Tomey
Corp.). These images can be used for preoperative screening of cataract,
corneal and refractive surgery patients and for postoperative analysis
of astigmatism. Analysis can determine early keratoconus, pellucid degeneration,
irregular astigmatism, and other unusual corneal topographies. The images
can also be used to assist in difficult contact lens fittings.
Confocal Microscopy.
Tandem Scanning Confocal Microscopy (TSCM) is available through the
Corneal Service. TSCM is useful for detecting and managing Keratitis
(infections and inflammations of the cornea), especially those caused
by acanthamoeba, filamentous fungi, and infectious crystalline keratopathy.
TSCM provides a noninvasive method of following resolution of these
infections and separating medication side effects from persistent or
worsening infections. TSCM is also useful in analyzing corneal dystrophies,
tear film abnormalities and nonspecific keratitis.
Acanthamoeba
Crystalline Keratopathy
Ocular evaporation, infrared meibography and tear flow analysis.
Multiple methods of analyzing the ocular surface and tear film for abnormalities
are available through the Corneal Service. Ocular evaporation is useful
in defining the cause for symptoms of dry eye. Infrared meibography
provides detailed analysis of the meibomian gland architecture without
the delay of infrared photography. Meibomian glands may be abnormal
in occlusive meibomitis, ocular rosacea or seborrhic blepharitis. Tear
flow analysis is a specific measure of tear volume and manufacture without
the stimulation of test strips (Shirmer's test). All of these methods
are used to define the causes of dry eyes and blepharitis to improve
both detection and treatment.
Infrared Meibography - Normal Meibomian Glands
Abnormal and missing Meibomian Glands
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