PubMed Health⌕ Search

Biomedical subjects

H L Freedman

Publications and source records attributed to H L Freedman.

13 recordsLinked to original sources
PubMed1992

Polaroid photoscreening for amblyogenic factors. An improved methodology.

BACKGROUND: The authors describe a new photoscreening camera designed to detect amblyogenic factors, including strabismus, asymmetric and abnormal refractive errors, and media opacities. The photoscreener uses eccentric photorefraction principles and provides two meridian photographs of the retinal reflex. METHODS: Pass/fail screening data from the photographs of 202 nondilated children as determined by two masked observers were compared with data from complete ophthalmologic examinations. RESULTS: The photoscreener had a sensitivity rate of 87%, a specificity rate of 89%, a positive predictive value of 93%, a negative predictive value of 80%, and an overall agreement rate of 88%. The prescreening probability for amblyogenic factors was 63%. Constant strabismus was detected in all cases. Five intermittent strabismus cases were missed. Two patients with myopia, three patients with hyperopia, and five patients with astigmatism were missed. All media opacities were detected. CONCLUSION: This new two-flash photoscreening camera, which uses high-speed Polaroid film, is an accurate, reliable method of detecting amblyogenic factors in undilated children. The camera offers promise as a useful mass screening tool.

Adolescent↗
PubMed1989

Heat retention in varieties of warm compresses: a comparison between warm soaks, hard-boiled eggs and the re-heater.

Warm compresses are the most common form of treatment for chalazia and other inflammatory conditions of the eyelids. We compared the heat retention characteristics of warm washcloths, hard-boiled eggs, and a heat-generating product called the Re-Heater when used for delivering heat to the eyelids. Skin temperature was measured during 20-minute applications of each "device." The Re-Heater had the best total heat delivery, followed closely by the hard-boiled egg. Both of these methods are reusable, easy, and cause no discomfort. We recommend that physicians instruct their patients in the use of either of these techniques when heat application to the eyelids is desired.

Bandages↗
PubMed1978

Cytomegalovirus in juvenile iridocyclitis.

We cultured cytomegalovirus from lens material aspirated from the eye of a 4-year-old boy who had a severe bilateral iridocyclitis and secondary cataracts. There were neither systemic manifestations of congenital disease nor chorioretinitis.

Child, Preschool↗
PubMedDate not supplied

Preservation of anterior ciliary vessels during strabismus surgery: a nonmicroscopic technique.

Preservation of anterior ciliary vessels (ACVs) during strabismus surgery using microscopic dissection techniques and the operating microscope has been previously described. We describe a technique using standard loupe magnification for vessel preservation, in 77 patients, ages 7 months to 69 years, who had surgery between January 1989 and September 1990. ACVs, with a small sheath of connective tissue, were dissected off the surface of the muscles and tendons using blunt and sharp dissection with Knapp iris hooks and Vannas scissors. Key elements of the dissection were sufficient separation of the vessel complex from the anterior tendon insertion and the use of blunt rather than sharp dissection. We successfully preserved 125 ACVs in 97 muscles. Ninety-five vessels were saved with 71 recessions, 14 with 13 resections, and 16 with adjustable sutures. The success rate of surgery was 85% in surgeries done either with or without anterior ciliary preservation. Vessel dissection time averaged 5 to 10 minutes per muscle. ACV preservation can be easily and successfully performed in routine strabismus cases. The procedure does not require the operating microscope and can be done under standard loupe (1.5 to 3.0 x) magnification. This procedure theoretically reduces the risk of anterior segment ischemia in situations where the patient is thought to be at significant risk for this complication.

Adolescent↗