Vol 2, No 2 (2017)
Review paper
Published online: 2017-06-28
Calculation of IOL power after refractive surgery
DOI: 10.5603/OJ.2017.0011
Ophthalmol J 2017;2(2):44-48.
Abstract
The purpose of this article is to identify and describe the methods used nowadays to calculate intraocular lens (IOL) power in post refractive surgery patients. All the reasons why the standard way of calculating IOL power do not work in post refractive surgery patients are analysed. Moreover, other formulas that can calculate the IOL power are described. The importance for the surgeon to understand the advantages and limitations of each method is stressed. The necessity of new, even more accurate methods to exist is also pointed out.
Keywords: intraocular lens calculationIOL powerpost refractive surgery cataract surgeryIOL calculation formulas
References
- Hamilton DR, Hardten DR. Cataract surgery in patients with prior refractive surgery. Curr Opin Ophthalmol. 2003; 14(1): 44–53.
- Seitz B, Langenbucher A. Intraocular lens power calculation in eyes after corneal refractive surgery. J Refract Surg. 2000; 16: 349–361.
- Savini G, Hoffer KJ, Zanini M. IOL power calculations after LASIK and PRK. Cataract Refract Surg Today Europe 2007; April:37–44. http://crstodayeurope.com/articles/2007-apr/0407_09-php/?single=true.
- Feiz V, Mannis MJ. Intraocular lens power calculation after corneal refractive surgery. Curr Opin Ophthalmol. 2004; 15(4): 342–349.
- Koch DD, Wang Li. Calculating IOL power in eyes that have had refractive surgery. J Cataract Refract Surg. 2003; 29(11): 2039–2042.
- Patel S, Alió JL, Pérez-Santonja JJ. Refractive index change in bovine and human corneal stroma before and after lasik: a study of untreated and re-treated corneas implicating stromal hydration. Invest Ophthalmol Vis Sci. 2004; 45(10): 3523–3530.
- Holladay JT. Cataract surgery in patients with previous keratorefractive surgery (RK, PRK, and LASIK). Ophthalmol Pract. 1997; 15: 238–244.
- Koch DD. Cataract surgery following refractive surgery. Am Acad Ophthalmol Focal Points. 2001; 19: 1–7.
- Feiz V, Mannis MJ, Garcia-Ferrer F, et al. Intraocular lens power calculation after laser in situ keratomileusis for myopia and hyperopia: a standardized approach. Cornea. 2001; 20(8): 792–797.
- Feiz V, Moshirfar M, Mannis MJ, et al. Nomogram-based intraocular lens power adjustment after myopic photorefractive keratectomy and LASIK: a new approach. Ophthalmology. 2005; 112(8): 1381–1387.
- Wang Li, Jackson DW, Koch DD. Methods of estimating corneal refractive power after hyperopic laser in situ keratomileusis. J Cataract Refract Surg. 2002; 28(6): 954–961.
- Wang Li, Booth MA, Koch DD. Comparison of intraocular lens power calculation methods in eyes that have undergone laser-assisted in-situ keratomileusis. Trans Am Ophthalmol Soc. 2004; 102: 189–96; discussion 196.
- Wang Li, Booth MA, Koch DD. Comparison of intraocular lens power calculation methods in eyes that have undergone LASIK. Ophthalmology. 2004; 111(10): 1825–1831.
- Aramberri J. Intraocular lens power calculation after corneal refractive surgery: double-K method. J Cataract Refract Surg. 2003; 29(11): 2063–2068.
- Chokshi AR, Latkany RA, Speaker MG, et al. Intraocular lens calculations after hyperopic refractive surgery. Ophthalmology. 2007; 114(11): 2044–2049.
- Holladay JT. IOL calculations following RK. Refract Corneal Surg. 1989; 5: 203.
- Chokshi AR, Latkany RA, Speaker MG, et al. Intraocular lens calculations after refractive surgery. J Cataract Refract Surg. 2005; 31(3): 562–570.
- Argento C, Cosentino MJ, Badoza D. Intraocular lens power calculation after refractive surgery. J Cataract Refract Surg. 2003; 29(7): 1346–1351.
- Haigis W. Corneal power after refractive surgery for myopia: contact lens method. J Cataract Refract Surg. 2003; 29(7): 1397–1411.
- Shammas HJ, Shammas MC. No-history method of intraocular lens power calculation for cataract surgery after myopic laser in situ keratomileusis. J Cataract Refract Surg. 2007; 33(1): 31–36.
- Shammas HJ, Shammas MC, Garabet A, et al. Correcting the corneal power measurements for intraocular lens power calculations after myopic laser in situ keratomileusis. Am J Ophthalmol. 2003; 136(3): 426–432.
- Qazi MA, Cua IY, Roberts CJ, et al. Determining corneal power using Orbscan II videokeratography for intraocular lens calculation after excimer laser surgery for myopia. J Cataract Refract Surg. 2007; 33(1): 21–30.
- Holladay JT, Hill WE, Steinmueller A. Corneal power measurements using scheimpflug imaging in eyes with prior corneal refractive surgery. J Refract Surg. 2009; 25(10): 862–868.
- Tang M, Li Y, Avila M, et al. Measuring total corneal power before and after laser in situ keratomileusis with high-speed optical coherence tomography. J Cataract Refract Surg. 2006; 32(11): 1843–1850.
- Tang M, Li Y, Huang D. An intraocular lens power calculation formula based on optical coherence tomography: a pilot study. J Refract Surg. 2010; 26(6): 430–437.
- Tang M. Intraocular lens power calculation based on fourier-domain optical coherence tomography. Invest. Ophthalmol. Vis. Sci. 2010; 51: p. E-Abstract 5692.
- Ladas JG, Stark WJ. Calculating IOL power after refractive surgery. J Cataract Refract Surg. 2004; 30(12): 2458; author reply 2458–9.
- Walter KA, Gagnon MR, Hoopes PC, et al. Accurate intraocular lens power calculation after myopic laser in situ keratomileusis, bypassing corneal power. J Cataract Refract Surg. 2006; 32(3): 425–429.
- Masket S, Masket SE. Simple regression formula for intraocular lens power adjustment in eyes requiring cataract surgery after excimer laser photoablation. J Cataract Refract Surg. 2006; 32(3): 430–434.
- Holladay JT. Corneal topography using the Holladay Diagnostic Summary. J Cataract Refract Surg. 1997; 23(2): 209–221.
- Ianchulev T, Salz J, Hoffer K, et al. Intraoperative optical refractive biometry for intraocular lens power estimation without axial length and keratometry measurements. J Cataract Refract Surg. 2005; 31(8): 1530–1536.
- Mackool RJ, Ko W, Mackool R. Intraocular lens power calculation after laser in situ keratomileusis: Aphakic refraction technique. J Cataract Refract Surg. 2006; 32(3): 435–437.
- Hodge C, McAlinden C, Lawless M, et al. Intraocular lens power calculation following laser refractive surgery. Eye Vis (Lond). 2015; 2: 7.