High-frequency ultrasound measurements of the normal ciliary body and iris.

Background And Objective: To determine the normal ultrasonographic thickness of the iris and ciliary body.

Patients And Methods: This prospective 35-MHz ultrasonographic study included 80 normal eyes of 40 healthy volunteers. The images were obtained at the 12-, 3-, 6-, and 9-o'clock radial meridians, measured at three locations along the radial length of the iris and at the thickest section of the ciliary body.

Evaluation of the stability of Boston type I keratoprosthesis-donor cornea interface using anterior segment optical coherence tomography.

Purpose: To evaluate the anatomic stability of an implanted Boston type I keratoprosthesis (KPro)-donor cornea interface and assess the presence or absence of a potential space (gap) between the KPro front plate and donor cornea using anterior segment optical coherence tomography (AS-OCT). The presence of a gap would raise concerns of a possible pathway for the exchange of extraocular fluid with the anterior chamber.

Methods: Fifteen eyes implanted with a Boston type I KPro were studied by the noncontact technique of AS-OCT (AC Cornea OCT prototype; OTI, Canada).

Acquired senile retinoschisis of the peripheral retina imaged by spectral domain optical coherence tomography: a case report.

Purpose: We report spectral domain optical coherence tomography findings of the peripheral retina in a patient with senile (acquired) retinoschisis.

Methods: This is an observational case report. Spectral domain optical coherence tomography was performed to image the peripheral retina at the area of retinoschisis in a 70-year-old man with bilateral inferonasal elevated peripheral retinal lesions.

Time Domain Optical Coherence Tomography in Familial Vitreous Amyloidosis Associated Transthyretin Met30 Mutation.

Vitreous amyloidosis is characterized by progressive loss of vision from amyloid accumulation of deposits on the retina and in the vitreous. Time domain optical coherence tomography (TD-OCT) was used in a case of familial transthyretin vitreous amyloidosis Met30 mutation to image the anterior vitreous deposits, which showed high reflectivity of very different from vitreous found in unaffected individuals. TD-OCT may be a useful adjunctive test to diagnose vitreous amyloidosis when masquerade syndromes are suspected.

Anterior segment imaging: optical coherence tomography versus ultrasound biomicroscopy.

Background And Objective: To determine the clinical indications of anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy in anterior segment imaging.

Patients And Methods: Eighty patients were evaluated using AS-OCT and ultrasound biomicroscopy.

Results: AS-OCT was ideal for detailed imaging of structures from the surface of the eye to the iris plane.

Imaging implanted keratoprostheses with anterior-segment optical coherence tomography and ultrasound biomicroscopy.

Purpose: To describe the anterior ocular segment findings of eyes with implanted Boston type 1 keratoprostheses (KPro) in vivo by using anterior-segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM).

Methods: A retrospective, comparative study was made of patients with implanted KPros who were examined with AS-OCT (AC Cornea OCT) and UBM (OTI Scan 35-50 MHz Ultrasound).

Results: One pseudophakic and 1 aphakic eye were included in the study.

Imaging through opaque corneas using anterior segment optical coherence tomography.

Background And Objective: To investigate the capability of the prototype AC Cornea OCT (Ophthalmic Technologies Inc., Toronto, Ontario, Canada) for imaging eyes with opaque corneas.

Patients And Methods: More than 50 eyes of patients were included in the study.

Surface rendering of 3D ultrasound images in ophthalmology.

Surface rendering of three-dimensional ultrasound images is a novel way of imaging ophthalmic pathologies in vivo. The authors have evaluated surface rendering of three-dimensional ultrasound images in selected cases of opthalmic disease.

Peribulbar oncocytoma: high-frequency ultrasound with histopathologic correlation.

The clinical, ultrasonographic, and histopathologic characteristics of an oncocytoma of the conjunctiva are described. A 49-year-old woman presented with a red-orange lesion adjacent to the caruncle in her left eye. A clinical examination including high-frequency ultrasound was performed prior to excisional biopsy of her tumor.

Optic nerve measurements by 3D ultrasound-based coronal "C-scan" imaging.

Twenty-three normal eyes were examined with the Intensity Profiling technique of 3D I-Scan and 52 normal eyes with the Automated technique of OTI-Scan 1000 ultrasound systems (Ophthalmic Technologies Inc., Toronto, Ontario, Canada). With the eye looking straight, the probe was applied on the temporal sclera.

Wide-field handheld high frequency ultrasonography using a variable high frequency ultrasound system.

Wide-field handheld high frequency ultrasonography using a variable high frequency ultrasound system is an imaging modality in the frequency range of 35 to 50 MHz. Using a water bath immersion technique, high-resolution digital movies obtained from a variety of anterior segment ocular conditions were particularly helpful in establishing the diagnosis in each case. Images taken with the wide-field limbus-to-limbus mode provided a comprehensive picture of large and extensive lesions, whereas the focal mode was for small to medium lesions or specific areas of interest.

A 3-dimensional ultrasound C-scan imaging technique for optic nerve measurements.

Purpose: To evaluate the use of 3-dimensional ultrasound C-scan imaging for optic nerve diameter measurements.

Design: Prospective observational case series.

Participants: Thirty-eight normal eyes of 32 healthy adults.

Retinal blood flow in the normal human eye using the canon laser blood flowmeter.

Purpose: To establish a retinal blood flow database in normal human eyes using the Canon Laser Blood Flowmeter (CLBF).

Method: Fourteen healthy subjects (7 males, 7 females) between the ages of 24 and 33 underwent birectional laser Doppler velocimetry (BLDV) in one eye using the CLBF. Measurements consisting of blood vessel diameter (D) in micrometers, velocity (V) in millimeters per second, and flow (F) in microliters per minute were recorded at sites along the major retinal veins.