Ultrasonography in Ophthalmology Proceedings of the 8th SIDUO Congress Documenta Ophthalmologica Proceedings Series, Vol. 29

Forty-eight eyes with massive periretinal proliferation were examined with ultrasonography. In addition to the triangular retinal detachment T-sign was indicative of severe MPP. And irregular thickening and bending of the retina were observed on ultrasonography in eyes with MPP. The detached retina was immobile in all eyes. Preoperative ultrasonographic findings did not prove the value on the assessment of operative prognosis. REFERENCES Bronson, N.R. & Turner, F.T. A simple B-scan uitrasonoscope. Arch. Ophthalmol. 90: 237 (1973). Coleman, D.J., Koning, W.F. & Katz L.: A Hand-Operated ultrasound scan system for ophthalmic evaluation, Am. J. Ophthalmol. 68: 258 (1969). Fuller. D.G., Laqua, H. & Machemer, R. Ultrasonographic diagnosis of massive periretinal proliferation in eyes with opaque media (triangular retinal detachment). Am. J. Ophthalmol. 83: 460 (1977). Laqua, H. & Machemer, R. Glial cell proliferation in retinal detachment (massive periretinal proliferation). Am. 1. Ophthalmol. 80: 1 (1975). Laqua, H. & Machemer R. Oinical-pathological correlation in Massive periretinal proliferation. Am. J. Ophthalmol. 80: 912 (1975). Machemer, R. & Laqua, H. Pigment epithelial proliferation in retinal detachment (massive periretinal proliferation). Am. J. Ophthalmol. 80: 1 (1975). Machemer, R. & Laqua, H. A logical approach to the treatment of massive periretinal proliferation. Ophthalmology 85: 584 (1978). Machemer, R. Van Horn, D. & Aaberg, T.M. Pigment epithelial proliferation in human retinal detachment with massive periretinal proliferation, Machemer, R. Pathogenesis and classification of massive periretinal proliferation. Br. J. Ophthalmol. 62: 737 (1978).

One: The Eye.- 1. Vitreous pathology.- Echography and vitreous surgery.- Ultrasonographic characteristics of operable massive periretinal proliferation.- Ultrasonic diagnosis of massive periretinal proliferation.- Rapid B-scanning in diabetic eye disease.- Preoperative evaluation of vitreous surgery by ultrasonography.- Diagnostic ultrasound in cases of experimental vitreous hemorrhage.- A long-term ultrasonographic follow-up of injected blood into the vitreous.- Ultrasonic examination of the vitreous.- Prophylaxis of retinal detachment in endovitreous hemorrhages experimentally driven.- Echographic diagnosis after intraocular silicone oil injection.- Round table discussion on vitreous pathology.- 2. Intraocular tumours.- The relation between histopathology and ultrasonography in intraocular tumours.- The Role of ultrasound in the investigation and management of suspected ocular melanoma.- Differential diagnostic results of clinical echography in intraocular tumors.- Absolute absorption and reflectance constants of ocular tissue. Abstract only.- A-mode ultrasonography in cases of leukokoria.- Echographic results in the diagnosis of retinoblastoma.- Considerations of two cases of medullo-epitheliomas.- The role of echography in the conservative treatment of endobulbar tumours.- Computer analysis of A-mode echograms from choroidal melanoma.- A choroidal oat-cell carcinoma metastasis mimicking a choroidal melanoma.- 3. Oculometry, lensimplantation.- Ocular biometry.- Determination of sound velocity in different forms of cataracts.- Ultrasonographic study of the ocular parameters after glaucoma surgery.- Ocular echometry in the diagnosis of congenital glaucoma.- Ocular dimensions of eyes with Fuchs’ spot provided by ultrasonic biometry.- Ultrasonic study of axial length changes after encircling operation.- An idea for measurement of the axial length of the eye with laser as visual target.- The growth of the eye from the age of 10 to 18 years.- Myopia of prematurity — Changes during adolescence.- Intraocular lens insertion made to ultrasonic measure. Abstract only.- Sources of error in the calculation of intraocular lens power.- Determination of intraocular lenses by ultrasound.- Predictive value of calculated dioptric power of prepupillary implant lenses.- A computerized method to analyse echograms for the calculation of intraocular lenses.- 4. Miscellaneous.- Noonan’s syndrome, echographic study.- Five years ultrasonographic eye examination in children.- Computer assisted acoustic measurements of the posterior ocular coats. Abstract only.- A comparative echographic and biochemical study of the subretinal fluid (S.R.F.) in idiopathic retinal detachment.- A characteristic echographic sign of choroidal detachment — The appearance of the angle of junction with the ocular wall.- A-scan echography of the eye and orbit — A training film for medical students and doctors. Abstract only.- Retinal tear on B-scanning.- Two: The Orbit.- 1. Orbital tumours.- The role of ultrasound in the investigation and management of orbital disease.- Differential diagnostic results of clinical echography in orbital tumors.- Echographic differentiation of vascular tumors in the orbit.- Comparison of echographic and computertomographic examinations in orbital diseases.- Echography in orbital rhabdomyosarcoma. Abstract only.- Combination of echography with coronal CT in the diagnosis of orbital disorders.- Echography in unusual orbital complications of parasinusal diseases.- Eight years of A- and B-scan ultrasonography in tumoural diagnostics of the globe and orbit.- Echographic differential diagnosis of optic-nerve lesions.- 2. Optic nerve, muscles.- Echographic follow-up of dysthyroid eye disease.- Swollen extraocular muscles — Ultrasonographic findings and clinical appearance.- Echography in orbital myositis.- B-scan ultrasonography in optic neuropathy.- Ultrasonography of the optic nerve.- Motility disorders in high myopia.- 3. Miscellaneous.- Echographic findings in 34 patients with choroidal folds.- Ultrasonography and percutaneous orbital aspiration.- A comparison of ultrasound and C.T. scanning in blow out fracture of the orbit.- A proposed orbital wall orient point for topographic and quantitative echography.- Some less important use of ultrasound in ophthalmology.- Three: New Techniques.- 1. Tissue characterization.- Digital processing and imaging modes for clinical ultrasound.- In vivo characterization of intraocular membranes.- The recognition of detached retina and vitreous membranes by means of radio frequency signal analysis.- Measurement of ultrasound attenuation in tissues from scattered reflections: In vitro assessment of applicability.- Acoustic measurements of vitreous membrane and retina thickness reflectives.- 2. Equipment.- The significance of the S-shaped amplifier characteristics in echographic tissue diagnosis.- Comparative measurements on different pulse-echo systems using test reflectors.- Reliability and accuracy of TM (tissue model) for calibration of standardized A-scan instrumentation.- Comparative measurements on ultrasonic pulse-echo equipment with the Echosimulator.- A new device for ocular biometry.- Influence of equipment parameters on results in ophthalmic ultrasonography. I. Sensitivity and echo detection capability.- Influence of equipment parameters on results in ophthalmic ultrasonography. II. Frequency and frequency spectrum.- A new ophthalmic ultrasonoscope.- Image freezing and grey scale in ophthalmic echography.- A new contact B-scan ultrasonic apparatus for the ophthalmological diagnosis.- Functional realization of a SAB-scanner.- Digitalized echo oculometry.- Electronic tissue model (E.T.M.).- Round table discussion on tissue characterization.- Closing remarks.- List of Contributors.