Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

A Review of the Sonometrics DBR Unit and the Binkhorst Formula-Reply

A Review of the Sonometrics DBR Unit and the Binkhorst Formula-Reply Abstract In Reply. —I was pleased to see that my review of the literature on lens power calculation accuracy was actively read. It is interesting that the only responses were from the president of Sonometrics Systems Inc and two of their major consultants. After being given the opportunity to respond to these letters, I was tempted to allow the reader to draw his own conclusions. This would not be in the reader's best interest, however, since many questions have been raised that should be answered point by point.The major flaw in the comments of Binkhorst is that, to my knowledge, he has not taken the opportunity to evaluate and report on other ultrasound units or formulas. He has never reported on the use of the Kretz 7200 MA or Ossoinig's immersion method.This tends to limit his perspective and could easily bias his opinions of other studies. On the other References 1. Binkhorst RD: The accuracy of ultrasonic measurement of the axial length of the eye . Ophthalmic Surg 1981;12:363-365. 2. Colenbrander MD: Calculation of the power of an iris clip lens for distance vision . Br J Ophthalmol 1973;57:735-740.Crossref 3. Binkhorst RD: Results of intraocular lens power calculation , in Emery JM and Jacobson AC (eds): Current Concepts in Cataract Surgery: Selected Proceedings of the Seventh Biennial Cataract Surgical Congress . New York, Appleton-Century-Crofts, 1982, p 53. 4. Hoffer KJ: Intraocular lens calculation: The problem of the short eye . Ophthalmic Surg 1981;12:269-272. 5. Kraff MC, Sanders DR, Lieberman HL: Monitoring for continuing endothelial cell loss with cataract extraction and intraocular lens implantation . Ophthalmology 1982;89:30-34.Crossref 6. Jaffe NS: A-scan calculation of exact desired intraocular lens , in Emery JM (ed): Current Concepts in Cataract Surgery . St Louis, CV Mosby Co, 1978, p 83. 7. Clevenger C: Clinical prediction versus ultrasound measurement of IOL power . Am Intra-Ocular Implant Soc J 1978;4:222-224.Crossref 8. Kraff MC, Sanders DR, Lieberman HL: Determination of intraocular lens power: A comparison with and without ultrasound . Ophthalmic Surg 1978;9:81-84. 9. Maloney WF, Kratz RP, Mazzocco TR, et al: Posterior chamber intraocular lens power calculation in 441 cases . Am Intra-Ocular Implant Soc J 1979;5:349-350.Crossref 10. Sanders DR, Kraff MC: Improvement of intraocular lens power calculation using empirical data . Am Intra-Ocular Implant Soc J 1980;6:263-267.Crossref 11. Banfiel RA, Pallin SL, Walman GB: A-scan/keratometry post-op refraction . Am Intra-Ocular Implant Soc J 1981;7:272.Crossref 12. Hoffer KJ: Pre-operative cataract evaluation: Intraocular lens power calculation . Int Ophthalmol Clin 1982;22:37-75.Crossref 13. Retzlaff J: A new intraocular lens calculation formula . Am Intra-Ocular Implant Soc J 1980;6:148-152.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

A Review of the Sonometrics DBR Unit and the Binkhorst Formula-Reply

Archives of Ophthalmology , Volume 100 (10) – Oct 1, 1982

Loading next page...
 
/lp/american-medical-association/a-review-of-the-sonometrics-dbr-unit-and-the-binkhorst-formula-reply-mxvFQqFmuS
Publisher
American Medical Association
Copyright
Copyright © 1982 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1982.01030040654025
Publisher site
See Article on Publisher Site

Abstract

Abstract In Reply. —I was pleased to see that my review of the literature on lens power calculation accuracy was actively read. It is interesting that the only responses were from the president of Sonometrics Systems Inc and two of their major consultants. After being given the opportunity to respond to these letters, I was tempted to allow the reader to draw his own conclusions. This would not be in the reader's best interest, however, since many questions have been raised that should be answered point by point.The major flaw in the comments of Binkhorst is that, to my knowledge, he has not taken the opportunity to evaluate and report on other ultrasound units or formulas. He has never reported on the use of the Kretz 7200 MA or Ossoinig's immersion method.This tends to limit his perspective and could easily bias his opinions of other studies. On the other References 1. Binkhorst RD: The accuracy of ultrasonic measurement of the axial length of the eye . Ophthalmic Surg 1981;12:363-365. 2. Colenbrander MD: Calculation of the power of an iris clip lens for distance vision . Br J Ophthalmol 1973;57:735-740.Crossref 3. Binkhorst RD: Results of intraocular lens power calculation , in Emery JM and Jacobson AC (eds): Current Concepts in Cataract Surgery: Selected Proceedings of the Seventh Biennial Cataract Surgical Congress . New York, Appleton-Century-Crofts, 1982, p 53. 4. Hoffer KJ: Intraocular lens calculation: The problem of the short eye . Ophthalmic Surg 1981;12:269-272. 5. Kraff MC, Sanders DR, Lieberman HL: Monitoring for continuing endothelial cell loss with cataract extraction and intraocular lens implantation . Ophthalmology 1982;89:30-34.Crossref 6. Jaffe NS: A-scan calculation of exact desired intraocular lens , in Emery JM (ed): Current Concepts in Cataract Surgery . St Louis, CV Mosby Co, 1978, p 83. 7. Clevenger C: Clinical prediction versus ultrasound measurement of IOL power . Am Intra-Ocular Implant Soc J 1978;4:222-224.Crossref 8. Kraff MC, Sanders DR, Lieberman HL: Determination of intraocular lens power: A comparison with and without ultrasound . Ophthalmic Surg 1978;9:81-84. 9. Maloney WF, Kratz RP, Mazzocco TR, et al: Posterior chamber intraocular lens power calculation in 441 cases . Am Intra-Ocular Implant Soc J 1979;5:349-350.Crossref 10. Sanders DR, Kraff MC: Improvement of intraocular lens power calculation using empirical data . Am Intra-Ocular Implant Soc J 1980;6:263-267.Crossref 11. Banfiel RA, Pallin SL, Walman GB: A-scan/keratometry post-op refraction . Am Intra-Ocular Implant Soc J 1981;7:272.Crossref 12. Hoffer KJ: Pre-operative cataract evaluation: Intraocular lens power calculation . Int Ophthalmol Clin 1982;22:37-75.Crossref 13. Retzlaff J: A new intraocular lens calculation formula . Am Intra-Ocular Implant Soc J 1980;6:148-152.Crossref

Journal

Archives of OphthalmologyAmerican Medical Association

Published: Oct 1, 1982

References