To evaluate the effects of lubricating eye drops on the repeatability of keratometry (K) measurements in patients presenting for cataract surgery
Keywords:
artificial tears, lubricating eye drops, cataract surgery, dry eye, KeratometryAbstract
Purpose – To evaluate the effects of lubricating eye drops on the repeatability of keratometry (K) measurements in patients presenting for cataract surgery. Design – Prospective, Comparative, Hospital-based study. Method – K readings were taken using the automatic keratometer of an autorefractometer. At Study Visit 1, keratometry was performed twice consecutively before instilling any eye drops. After instilling artificial tears, K readings were taken at 30 seconds and 2 minutes. Tear Break-Up Time (TBUT) was measured, and patients were divided into two groups [normal and dry eye]. The next morning, a second set of readings was taken. At Study Visit 2, one week post-surgery, a third set of K1 and K2 readings was recorded. Result – This study investigates variations in keratometry readings (K1 and K2) across different time points and between normal and dry eye patients. At Study Visit 1, keratometry was measured before and after the instillation of artificial tears, with readings taken at multiple intervals. Post-hoc analysis reveals significant differences in the mean K1 values between various time points within the dry eye group, with p-values consistently below 0.0001. Additionally, significant differences were found between normal and dry eyes at 0.5 minutes and 2 minutes post-instillation.
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References
Chang, M., Kang, S. Y., & Kim, H. M. (2012). Which keratometer is most reliable for correcting astigmatism with toric intraocular lenses?. Korean journal of ophthalmology: KJO, 26(1), 10.
Epitropoulos, A. T., Matossian, C., Berdy, G. J., Malhotra, R. P., & Potvin, R. (2015). Effect of tear osmolarity on repeatability of keratometry for cataract surgery planning. Journal of Cataract & Refractive Surgery, 41(8), 1672-1677.
Goldberg, D. F. (2011). Preoperative evaluation of patients before cataract and refractive surgery. International ophthalmology clinics, 51(2), 97-107.
Goldberg, D. F. (2011). Preoperative evaluation of patients before cataract and refractive surgery. International ophthalmology clinics, 51(2), 97-107.
Hiraoka, T., Daito, M., Okamoto, F., Kiuchi, T., & Oshika, T. (2011). Time course of changes in ocular aberrations after instillation of carteolol long-acting solution and timolol gel-forming solution. Journal of ocular pharmacology and therapeutics, 27(2), 179-185.
Ishioka, M., Kato, N., Takano, Y., Shimazaki, J., & Tsubota, K. (2009). The quantitative detection of blurring of vision after eyedrop instillation using a functional visual acuity system. Acta ophthalmologica, 87(5), 574-575.
Kim, P., Plugfelder, S., & Slomovic, A. R. (2012). Top 5 pearls to consider when implanting advanced-technology IOLs in patients with ocular surface disease. International Ophthalmology Clinics, 52(2), 51-58.
Koh, S., Maeda, N., Ikeda, C., Asonuma, S., Mitamura, H., Oie, Y., ... & Nishida, K. (2014). Ocular forward light scattering and corneal backward light scattering in patients with dry eye. Investigative ophthalmology & visual science, 55(10), 6601-6606.
Lu, N., Lin, F., Huang, Z., He, Q., & Han, W. (2016). Changes of corneal wavefront aberrations in dry eye patients after treatment with artificial lubricant drops. Journal of ophthalmology, 2016(1), 1342056.
Magar, J. A. (2013). Comparison of the corneal curvatures obtained from three different keratometers. Nepalese Journal of Ophthalmology, 5(1), 9-15.
Manning, C. A., & Kloess, P. M. (1997). Comparison of portable automated keratometry and manual keratometry for IOL calculation. Journal of Cataract & Refractive Surgery, 23(8), 1213-1216. https://doi.org/10.1016/S0886-3350(97)80318-5
Montés-Micó, R., Cáliz, A., & Alió, J. L. (2004). Changes in ocular aberrations after instillation of artificial tears in dry-eye patients. Journal of Cataract & Refractive Surgery, 30(8), 1649-1652.
Morlet, N., Maloof, A., Wingate, N., & Lindsay, P. (1998). Reliable keratometry with a new hand held surgical keratometer: calibration of the keratoscopic astigmatic ruler. British journal of ophthalmology, 82(1), 35-38.
Moss, S. E., Klein, R., & Klein, B. E. (2000). Prevalence of and risk factors for dry eye syndrome. Archives of ophthalmology, 118(9), 1264-1268.
Moss, S. E., Klein, R., & Klein, B. E. (2000). Prevalence of and risk factors for dry eye syndrome. Archives of ophthalmology, 118(9), 1264-1268.
Pavlopoulos, G. P., Horn, J., & Feldman, S. T. (1995). The effect of artificial tears on computer-assisted corneal topography in normal eyes and after penetrating keratoplasty. American journal of ophthalmology, 119(6), 712-722. https://doi.org/10.1016/S0002-9394(14)72775-8
Salouti, R., Nowroozzadeh, M. H., Zamani, M., Ghoreyshi, M., & Salouti, R. (2011). Comparison of the ultrasonographic method with 2 partial coherence interferometry methods for intraocular lens power calculation. Optometry-Journal of the American Optometric Association, 82(3), 140-147. https://doi.org/10.1016/j.optm.2010.07.025
Schaumberg, D. A., Dana, R., Buring, J. E., & Sullivan, D. A. (2009). Prevalence of dry eye disease among US men: estimates from the Physicians' Health Studies. Archives of ophthalmology, 127(6), 763-768.
Shajari, M., Cremonese, C., Petermann, K., Singh, P., Müller, M., & Kohnen, T. (2017). Comparison of axial length, corneal curvature, and anterior chamber depth measurements of 2 recently introduced devices to a known biometer. American journal of ophthalmology, 178, 58-64. https://doi.org/10.1016/j.ajo.2017.02.027
Sheard, R. (2014). Optimising biometry for best outcomes in cataract surgery. Eye, 28(2), 118-125.
Stapleton, F., Alves, M., Bunya, V. Y., Jalbert, I., Lekhanont, K., Malet, F., ... & Jones, L. (2017). Tfos dews ii epidemiology report. The ocular surface, 15(3), 334-365. https://doi.org/10.1016/j.jtos.2017.05.003
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