Biomedical subjects

G W Rozakis

Publications and source records attributed to G W Rozakis.

3 recordsLinked to original sources

PubMed1998

Very high frequency ultrasound analysis of a new phakic posterior chamber intraocular lens in situ.

PURPOSE: To use very high frequency ultrasound scanning for in situ analysis of a new phakic posterior chamber intraocular lens (No-Touch; International Visions Inc, Cincinnati, Ohio). METHODS: In this pilot study, very high frequency ultrasound (50 MHz) wide-angle (15 mm) full anterior segment scans were obtained in two patients who had undergone phakic posterior chamber intraocular lens implantation into legally blind eyes with normal anterior segment anatomy. RESULTS: Very high frequency ultrasound B-scan images delineated the phakic posterior chamber intraocular lens within the posterior chamber. The relations to the sulci were clearly imaged. Anatomic relations of the phakic posterior chamber intraocular lens optic and haptics were visualized in both static (light/dark) and kinetic (distance/accommodative) states. CONCLUSION: Very high frequency ultrasound wide-angle scanning provides a unique tool to noninvasively evaluate the eye preoperatively and the static and kinetic relations of this new refractive device within the posterior chamber.

Adult↗

PubMed1982

Cryotherapy for retinoblastoma.

Cryotherapy was applied to 138 intraocular retinoblastoma tumors from 113 patients who were followed up for a mean of 40 months (four to 144 months). Overall, 70% of tumors were cured with cryotherapy and 93% of patients treated with cryotherapy survived. Twenty-one tumors were treated initially with cryotherapy alone, and 20 such tumors were cured. Twenty-seven new tumors appeared in eyes after radiation therapy and of these, 23 were cured with cryotherapy. Thirty-nine tumors were treated with cryotherapy after unsuccessful treatment with external beam irradiation, and 35 were cured with cryotherapy. Twenty-eight patients developed implantation seeds at the vitreous base after external beam irradiation but cryotherapy failed in each of these cases. There were few long-term ocular complications from cryotherapy despite intensive, heavy, and repeated cryotherapy. The limiting factor that determines success of cryotherapy is the size, elevation, and location of the tumor.

Child, Preschool↗

PubMedDate not supplied

Halos after PRK.

Explore the source record for details and available documents.

Cornea↗