Altogether, our
seven clinics serve a diverse population of over 40,000 patients
a year. TERTC also has the ability to reach special patient populations
within the Texas Medical Center (TMC) and the University of Texas
Medical Branch (UTMB) in Galveston, Texas. In
the clinical setting, we have access to the latest clinical techniques
and most advanced clinical technology. We have the latest corneal
topography equipment, endothelial camera, video, and biomicroscopy
camera instruments.

In addition to the
equipment and facilities, our large international patient base has
provided TERTC with a unique opportunity to conduct studies within a
broad spectrum of ethnic groups, ages, and refractive errors.

The TERTC Clinical Research Facility
has recently moved into a dedicated space adjacent to the Cornea and
Contact Lens Service area of the UHCO University Eye Institute. The
new refurbished space will allow TERTC the opportunity to expand its
clinical research services. The space includes the TERTC
administrative office and five exam rooms. Each room has the latest
clinical equipment and were specially designed with
consultation from TERTC
personnel.
Anatomy and pathology
laboratory
Since 1976, UHCO
h
as
maintained a state-of-the-art histology laboratory housing an electron microscope
laboratory with highly trained
staff. In 2005, UHCO upgraded the JEOL 100C
Transmission Electron Microscope with a new, state of
the art instrument (FEI). The laboratory
maintains comprehensive and up-to-date auxiliary instrumentation for
histological work.
Moreover, UHCO has invested in
sophisticated computer
hardware and
software that
allows for high-resolution image capture and
manipulation in morphometric analysis of tissues.
The UHCO Anatomy
and Pathology
Laboratory, with its research
and full-time staff, is recognized globally for the high quality of
its work and the research techniques it has developed. The TERTC
research in these laboratories
covers a broad spectrum of interests ranging from Anatomy, Pathology,
and Toxicology.
Currently underway is an ambitious effort involving
animal experiments on corneal wound healing and ultraviolet effects on
the eye and surrounding tissues. The corneas from these experiments
are evaluated histopathologically and quantified morphometrically.
Human corneal buttons are also assessed histopathologically on a
regular basis for purposes of diagnosis, research, and teaching. TERTC
also conducts research in cytotoxicology studies
in collaboration with industry. In addition, TERTC has ongoing studies
on the ocular adnexa and dermatology.
Confocal microscopy laboratory
The ability to analyze the cornea in
vivo has been enhanced with the recent acquisition of
a ConfoScan3 (Nidek) confocal
microscope. Under the guidance of Dr. William L. Miller, a valuable
member of TERTC, this instrument allows advanced imaging capabilities
not previously available at the College. This improved quality of
corneal imaging, in micron resolution, allows investigations
associated with corneal disorders, effects of surgical alterations and
to enhance and develop potential treatments. This instrument is
currently only one of two in the Houston area.
The ConfoScan3 is a confocal imaging
microscope that can view, magnify, measure, and photograph separate
layers of the cornea. The parameters of the examination, such as the
number of passes and the depth of the scan can be precisely defined.
This instrument uses the Distance
Immersion Principle (DIP), allowing the patients to be evaluated in a
non-invasive manner. This allows imaging without direct contact
with the cornea. The space between the front lens of the
ConfoScan3 and the patient’s cornea is filled with an immersion gel.
This allows the maintenance of the refractive index, shape of the
tissue, and patient comfort during an exam. Upon completion of an
exam, this system provides
up to 350 different images to be evaluated. Integrated cell analysis
software within the ConfoScan3 can automatically count the cells of the
endothelium providing a measure of cell density, polymegethism and other
significant statistical data.

This new technological addition will
enable clinicians to further evaluate patients who are suspected of
having corneal dystrophies, keratoconus, keratitis, and trauma. It serves as a
useful research tool to follow the effects of contact lenses and corneal
surgery. Specifically, it can assess the effect of ophthalmic solutions
and/or toxicity on specific corneal entities such as epithelial cells
and keratocytes.
Environmental research
TERTC has a long-standing record in
research on ultraviolet radiation (UVR) effects on the ocular and
related tissues. Regular measurements of ambient UVR intensities from
the roof of the J. Davis Armistead Building provide data from which the
protective efficacy of UVR blocking and other contact and ophthalmic
lenses can be evaluated. In addition, ocular tissues are examined
following UVR exposure in animal experiments.
Recently, studies concerning skin cancer
and their relationship to UVR exposure have been undertaken as well.
These studies examine human biopsies while also estimating lifetime UVR
dosages of individuals. We are also using new technologies to determine
the vulnerability of ocular and adjacent facial tissues and their
subsequent requirements for UVR protection.
TERTC
is fortunate to be joined by two eminent Irish researchers, Dr. James
Walsh
,
Dublin Institute of Technology, and Dr. Judy Harmey, Department of
Surgery, Royal College of Surgeons. Dr. Walsh is a physicist and
he is the designer of the novel instrumentation we use in our
experiments. Dr. Harmey is a cancer researcher, who is collaborating
with us in determining the origin of pterygium formations, which may
affect as many as 10% of the population.
Industry has provided generous support
to TERTC and its commitment to research on the important health issue of
biological effect of UVR. We were the first research team that showed
that UVR incident tangentially is focused nasally, where pterygia most
commonly appear. Previously, this was only a theory. Our next step will
be to understand the disease process and corneal invasion with the
ultimate goal to stop its progress.
Our research has shown that soft contact
lenses uniquely and effectively blocks tangentially incident, and
therefore, pterygia stimulating UVR. UVR blocking contact lenses may,
therefore, be used prophilactively to prevent pterygium growth
Tear film and dry eye
laboratory
Under construction.