Miranda HI, Gutiérrez CM, de Almeida Y, Barroso LR, Ramos PY, Sibila GME

Language: Spanish
References: 21
Page: 1-11
PDF size: 395.84 Kb.

ABSTRACT

Objective: Evaluate the application of a correction factor for intraocular lens power calculation in patients with a narrow anterior chamber and augmented crystalline lens thickness.
Methods: An experimental study was conducted in which a correction factor was applied and compared with two control groups.
Results: Female sex prevailed with 71 % of the cases. Age was 70 years and over. 48.4 % of the patients had a postoperative sphere between ± 0.50 diopters; 19.4 % were below - 0.50 diopters and 32.3% were above + 0.50 diopters. Group 3 (crystalline lens thickness above 4.60 mm without correction factor) had the highest postoperative sphere percentage of ± 0.50 diopters (58.3 %). Group 2 had the highest percentage of patients with an achieved sphere above 0.50 diopters (38.2 %).
Conclusions: Patients to whom the correction factor was applied achieved a postoperative sphere close to emmetropia, despite the fact that the sample was not homogeneous and spheres above 1 diopter were not obtained.

REFERENCES

1. Blázquez Sánchez V. Díaz Castillo E. Innovaciones en la cirugía de catarata. Gac Optometr Ópt Oftálm. 2013;481:62-9.

2. Díaz TC, Almaguer MG, López IH, Izquierdo DC, Díaz EM, Silva RH. Principios para el cálculo de la lente intraocular tras cirugía refractiva corneal. Rev Cubana Oftalmol. 2015 [citado 17 de junio de 2018];29(1). Disponible en: http://www.scielo.sld.cu/scielo.php?script=sci_abstract&pid=S086421762016000100010

3. Hoffer KJ, Mortensen J. An update on IOL Power Calculation Formulas. En: Garg A, Lin JT, Latkany R, Bovet J, Haigis W, editores. Mastering in the Techniques of IOL Power Calculations. New Delhi: Jaypee Brothers Medical Publishers; 2009. p. 51-6.

4. Hoffer KJ, Aramberri J, Haigis W, Olsen T, Savini G, Shammas HJ, Bentow S. Protocols for studies of intraocular lens formula accuracy. Am J Ophthalmol. 2015;160:403-5.

5. Arambarri J. Intraocular lens power calculation after corneal refractive surgery: double-K method. J Cataract Refract Surg. 2003;29:2063-8.

6. Hernández Silva JR, Río Torres M, Ramos López M. Personalización de las fórmulas de cálculo de la lente intraocular. Rev Cubana Oftalmol. 2004 [citado 17 de junio de 2018];17(2). Disponible en: http://www.scielo.sld.cu/scielo.php?script=sci_arttext&pid=S086421762004000200007

7. Mendicute J, Aramberri J. Ojo corto. In: Mendicute J, Aramberri J, Cadarso L, Ruiz M, eds. Biometría, fórmulas y manejo de la sorpresa refractiva en la cirugía de catarata. Madrid: Editorial Tecnimedida; 2000.

8. Holladay JT, Gills JP, Leidlein J, Cherchio M. Achieving emmetropia in extremely short eyes with two piggyback posterior chamber intraocular lenses. Ophthalmology. 1996;103:1118-23.

9. Olsen T. Prediction of the effective postoperative (intraocular Lens) anterior chamber depth. J Cataract Refract Surg. 2006;32(3):419-24.

10. Joo J, Whang WJ, Oh TH, Kang KD, Kim HS, Moon JL. Accuracy of intraocular lens power calculation formulas in primary angle closure glaucoma. Korean J Ophthalmol. 2011;25(6):375-9.

11. Kim KN, Lim HB, Lee JJ, Kim CS. Influence of biometric variables on refractive outcomes after cataract surgery in angle - closure glaucoma patients. Korean J Ophthalmol. 2016;30(4):280-8.

12. Lee Ac, Qazi MA, Pepose JS. Biometry and intraocular lens power calculation. Curr Opin Ophthalmol. 2008;19(1):13-7.

13. Terzi E, Wang L, Kohnen T. Accuracy of modern intraocular lens power calculation formulas in refractive lens exchange for high myopia and high hyperopia. J Cataract Refract Surg. 2009;35(7):1181-9.

14. Ucakhan OO, Ozkan M, Kanpolat A. Anterior chamber parameters measured by the pentacam CES after uneventful phacoemulsification in normotensive eyes. Acta Ophthalmol. 2009;87(5):544-8.

15. Hayashi K, Hayashi H, Nakao F, Hayashi F. Changes in anterior chamber angle width and depth after intraocular lens implantation in eyes with glaucoma. Ophthalmology. 2000;107(4):698-703.

16. Mendicute J, Aramberri J. Ojo corto. In: Mendicute J, Aramberri J, Cadarso L, Ruiz M, eds. Biometría, fórmulas y manejo de la sorpresa refractiva en la cirugía de catarata. Madrid: Editorial Tecnimedida; 2000.

17. Holladay JT, Gills JP, Leidlein J, Cherchio M. Achieving emmetropia in extremely short eyes with two piggyback posterior chamber intraocular lenses. Ophthalmology. 1996;103(7):1118-23.

18. Shao D, He S. Meta-analysis of clinical randomized controlled trials comparing refractive with diffractive multifocales intraocular lenses in cataract surgery. PubMed. 2014;50(2):109-20.

19. Marchini G, Pagliarusco A, Toscano A, et al. Ultrasound biomicroscopic and convencional ultrasonographic study of ocular dimensions in primary angle-closure glaucoma. Ophthalmology. 1998;105(11):2091-8.

20. Lowe RF. Causes of shallow anterior chamber in primary angle-closure glaucoma. Ultrasonic biometry of normal and angle-closure glaucoma eyes. Am J Ophthalmol. 1969;67(1):87-93.

21. Narváez J, Zimmerman G, Stulting RD, Chang DH. Accuracy of intraocular lens power prediction using the Hoffer Q, Holladay 1, Holladay 2, and SRK/T formulas. J Cat Refract Surg. 2006;32(12):2050-3.