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Biomedical subjects

D S Friendly

Publications and source records attributed to D S Friendly.

10 recordsLinked to original sources
PubMed1990

A comparative study of grating and recognition visual acuity testing in children with anisometropic amblyopia without strabismus.

Bailey-Lovie-Ferris visual acuity charts and Teller visual acuity cards were used to compare recognition and grating visual acuity at near testing distances in 32 children with anisometropic amblyopia without strabismus. Appropriate optical corrections were worn. Test-retest intraobserver reliability was higher for letters (r =.95) than for gratings (r = .68). Using 20/30 visual acuity or better as the criterion for normal visual acuity, eight eyes with letter visual acuities ranging from 20/42 to 20/138 would have been inaccurately found to be normal by using the Teller visual acuity cards alone. Grating visual acuity measurements tended to be better than letter visual acuity; and, in general, they did not worsen proportionately with poorer letter visual acuity.

Adolescent↗
PubMed1990

A Polaroid SX-70 camera system for external ocular photography.

An inexpensive Polaroid SX-70 camera system for external eye photography can be assembled from easily obtainable parts. The advantages of this system include a "what-you-see-is-what-you-get" capability, instantly available prints (which permit repeat photography while the patient is still present), and convenient storage of acceptable prints.

Eye↗
PubMed1978

Preschool visual acuity screening tests.

The purpose of the study was to evaluate the relative merits of two screening tests used for visual acuity assessment of preschool children. The tests that were compared were the Good-Lite Company versions of the E-Test and of the STYCAR (Screening Test for Young Children and Retardates). The former is the most popular method for evaluating central acuity in young children in this nation; the STYCAR is a relatively new letter-matching-test developed in England, where it is widely employed. The E-Test poses left-right orientation problems which are eliminated by the symmetrical letters H, T, O and V utilized in the Letter-Matching-Test. Both visual acuity tests were administered on two separate occasions by personnel from the Prevention of Blindness Society of Metropolitan Washington to 633 preschool children in Washington, D.C. By random selection, 150 of the children received the E-Test at both sessions, 162 children received the Letter-Matching-Test at both sessions, 160 chilt athe the second session, and 161 children received the Letter-Matching-Test at the first session and the E-Test at the second session. The author medically examined the eyes of 408 of the 633 children without knowledge of which test had been initially administered. Statistical analysis of the data obtained from the study indicated that the Letter-Matching-Test was significantly better in terms of testability rates, group and individual instruction time, and performance time. The E-Test was more reliable in terms of test-retest acuity scores and was also more valid in terms of agreement between pass-fail results obtained at the first screening session and two levels of pass-fail refraction criteria.

Amblyopia↗
PubMed1977

Orbital involvement in 'sinus' histiocytosis. A report of four cases.

Sinus histiocytosis is a newly recognized benign disease affecting mainly children and young adults and usually having a protracted clinical course that is relatively unaffected by therapy. This paper describes four additional patients who had orbital involvement initially and reviews the salient clinical and histopathologic features of this entity. The outstanding clinical feature is cervical lymphadenopathy. Associated findings include low-grade fever, anemia, leukocytosis, and elevated IgG levels. A small percentage of patients develop proptosis with palpable orbital tumors. Such patients may not have appreciable lymphadenopathy. Progressive proptosis may lead to exposure keratitis, corneal ulceration, endophthalmitis, and loss of the eye. Histopathologically, the lymph nodes and orbital mass show a proliferation of large histiocytes intermixed with a variable proportion of lymphocytes and plasma cells. Lymphocytes and occasionally other cells derived from the hematopoietic system are commonly seen within the cytoplasm of the histiocytes.

Child↗
PubMed1976

Cerebro-hepato-renal syndrome of Zellweger. Ocular histopathologic findings.

An infant who was the product of a full-term pregnancy was born with multiple congenital defects, including diffuse bilateral corneal opacification. He failed to thrive and died at the age of 4 days. Autopsy findings were consistent with those seen in the cerebro-hepato-renal syndrome. Histopathologic examination of both eyes, obtained at autopsy, demonstrated similar changes. The main pathologic findings in the anterior segment were bilateral, diffuse corneal edema associated with paracentral iridocorneal adhesions and focal attenuation of Descemet membrane. Both retinas disclosed a selective degeneration of the outer nuclear layers and photoreceptors, confined mainly to the macular region. Atrophy of the optic disc and nerve, with reactive gliosis and demyelination, were consistent with findings in the central nervous system described in this syndrome.

Abnormalities, Multiple↗
PubMedDate not supplied

Results of combined surgery on the superior oblique and horizontal rectus muscles for A-pattern horizontal strabismus.

Results obtained in 32 patients with A-pattern horizontal strabismus and overacting superior oblique muscles treated with combined bilateral superior oblique tenotomies and bilateral symmetric surgery on the horizontal rectus muscles were analyzed retrospectively. The magnitude of reduction of the A-pattern correlated positively (r = 0.69) with the size of the preoperative A-pattern. Overall, 27 of the 32 patients (84%) had a satisfactory reduction in their A-pattern. Esodeviated patients received less correction in the primary position than exodeviated patients. Postoperative complications were minimal if the superior oblique tendon was hooked under direct visualization, and minimal dissection was performed on the surrounding tissue prior to transecting it near the nasal side of the superior rectus muscle.

Child↗