.: ORİJİNAL ARAŞTIRMA
Lenstar Biyometri ve Sirius Topografi Cihazları ile Sağlıklı Bireylerden Ölçülen Ön Segment Parametrelerinin ve Pupil Ofsetin Karşılaştırılması
Comparison of the Anterior Segment Parameters and the Pupil Offset Measured with the Lenstar Biometrics and the Sirius Topography in Healthy Individuals
Turkiye Klinikleri J Ophthalmol. 2019;28(1):29-36
doi: 10.5336/ophthal.2018-60707
Makale Dili: TR
Tam Metin
ÖZET
Amaç: Lenstar biyometri ve Sirius topografi cihazları ile ölçülen ön segment parametrelerinin ve pupil ofsetin karşılaştırılmasıdır. Gereç ve Yöntemler: Refraksiyon kusuru dışında oküler patolojisi olmayan 73 sağlıklı bireyin her iki gözünden Lenstar biyometri ve Sirius topografi cihazları ile üç kez ölçüm alındı. Her iki cihazdan elde edilen keratometri değerleri (düz [K1], dik [K2]), korneal astigmatizma, santral kornea kalınlığı (SKK), ön kamara derinliği (ÖKD), limbustan limbusa ölçüm (LLÖ), pupil ofset x, y ve toplam pupil ofset değerleri karşılaştırıldı. Bulgular: Bireylerin yaş ortalaması 38,84±12,21 (18-60) yıl, kadın erkek oranı 40 (%54,8)/33 (%45,2) idi. Sırasıyla Lenstar biyometri ve Sirius topografisi ile elde edilen ortalama K1 değerleri 43,07±1,31, 42,97±1,28, ortalama K2 değerleri 44,12±1,47, 43,96±1,43 D, ortalama korneal astigmatizma değerleri 1,05±0,72, 0,97±0,69 D, ortalama SKK değerleri 536±28, 539±27 μm, ortalama ÖKD değerleri 3,01±0,37, 2,95±0,41 mm ve ortalama LLÖ değerleri 12,06±0,37, 12,01±0,37 mm idi. Lenstar biyometri ve Sirius topografisi ile ölçülen ortalama pupil x ofset değerleri sırasıyla 0,22±0,12, 0,20±0,16 mm; ortalama pupil y ofset değerleri sırasıyla 0,11±0,08, 0,12±0,10 mm, ortalama toplam pupil ofset değerleri sırasıyla 0,25±0,15, 0,27±0,12 mm idi. Sonuç: Lenstar biyometri ve Sirius topografi cihazlarının pupil ofset ölçümleri arasında istatistiksel olarak anlamlı bir farklılık yoktu. Diğer ön segment parametlerinde ise klinik önemi olmayan, fakat istatistiksel olarak anlamlı olan farklılıklar bulunmuştur.
Anahtar Kelimeler: Lenstar biyometri; sirius topografi; ön segment parametreler
Amaç: Lenstar biyometri ve Sirius topografi cihazları ile ölçülen ön segment parametrelerinin ve pupil ofsetin karşılaştırılmasıdır. Gereç ve Yöntemler: Refraksiyon kusuru dışında oküler patolojisi olmayan 73 sağlıklı bireyin her iki gözünden Lenstar biyometri ve Sirius topografi cihazları ile üç kez ölçüm alındı. Her iki cihazdan elde edilen keratometri değerleri (düz [K1], dik [K2]), korneal astigmatizma, santral kornea kalınlığı (SKK), ön kamara derinliği (ÖKD), limbustan limbusa ölçüm (LLÖ), pupil ofset x, y ve toplam pupil ofset değerleri karşılaştırıldı. Bulgular: Bireylerin yaş ortalaması 38,84±12,21 (18-60) yıl, kadın erkek oranı 40 (%54,8)/33 (%45,2) idi. Sırasıyla Lenstar biyometri ve Sirius topografisi ile elde edilen ortalama K1 değerleri 43,07±1,31, 42,97±1,28, ortalama K2 değerleri 44,12±1,47, 43,96±1,43 D, ortalama korneal astigmatizma değerleri 1,05±0,72, 0,97±0,69 D, ortalama SKK değerleri 536±28, 539±27 μm, ortalama ÖKD değerleri 3,01±0,37, 2,95±0,41 mm ve ortalama LLÖ değerleri 12,06±0,37, 12,01±0,37 mm idi. Lenstar biyometri ve Sirius topografisi ile ölçülen ortalama pupil x ofset değerleri sırasıyla 0,22±0,12, 0,20±0,16 mm; ortalama pupil y ofset değerleri sırasıyla 0,11±0,08, 0,12±0,10 mm, ortalama toplam pupil ofset değerleri sırasıyla 0,25±0,15, 0,27±0,12 mm idi. Sonuç: Lenstar biyometri ve Sirius topografi cihazlarının pupil ofset ölçümleri arasında istatistiksel olarak anlamlı bir farklılık yoktu. Diğer ön segment parametlerinde ise klinik önemi olmayan, fakat istatistiksel olarak anlamlı olan farklılıklar bulunmuştur.
Anahtar Kelimeler: Lenstar biyometri; sirius topografi; ön segment parametreler
ABSTRACT
Objective: In this study, we aimed to compare the anterior segment parameters and the pupil offset obtained with Lenstar biometry and Sirius topography devices. Material and Methods: Three measurements were taken with Lenstar biometry and Sirius topography devices in each eyes of 73 patients without ocular pathology except refractive error. The mean keratometric values (flat [K1], steep [K2], corneal astigmatism, central corneal thickness (CCT), anterior chamber depth (ACD), white-to-white (WTW) distance , pupil offset x, y, and the total pupil offset values were compared. Results: The mean age of the patients was 38.84±12.21 (18-60) years and the female to male ratio was 40 (54.8%)/33 (45.2%). The mean K1 values were 43.07±1.31, 42.97±1.28 D; mean K2 values were 44.12±1.47, 43.96±1.43 D; mean corneal astigmatism values were 1.05±0.72, 0.97±0.69 D; mean CCT values were 536±28, 539±27 μm; mean ACD values were 3.01±0.37, 2.95±0.41 mm and the mean WTW values were 12.06±0.37, 12.01±0.37 mm obtained with Lenstar biometry and Sirius topography, respectively. The mean pupil x offset values were 0.22±0.12, 0.20±0.16 mm; mean pupil y offset values were 0.11±0.08, 0.12±0.10 mm, and the mean total pupil offset values were 0.25±0.15, 0.27±0.12 mm respectively, measured with Lenstar biometry and Sirius topography. Conclusion: In conclusion, there was no statistically significant difference between the pupil offset measurements of Lenstar biometry and Sirius topography devices. In other anterior segment parameters, there were statistically significant differences without any clinical significance.
Keywords: Lenstar biometry; sirius topography; anterior segment parameters
Objective: In this study, we aimed to compare the anterior segment parameters and the pupil offset obtained with Lenstar biometry and Sirius topography devices. Material and Methods: Three measurements were taken with Lenstar biometry and Sirius topography devices in each eyes of 73 patients without ocular pathology except refractive error. The mean keratometric values (flat [K1], steep [K2], corneal astigmatism, central corneal thickness (CCT), anterior chamber depth (ACD), white-to-white (WTW) distance , pupil offset x, y, and the total pupil offset values were compared. Results: The mean age of the patients was 38.84±12.21 (18-60) years and the female to male ratio was 40 (54.8%)/33 (45.2%). The mean K1 values were 43.07±1.31, 42.97±1.28 D; mean K2 values were 44.12±1.47, 43.96±1.43 D; mean corneal astigmatism values were 1.05±0.72, 0.97±0.69 D; mean CCT values were 536±28, 539±27 μm; mean ACD values were 3.01±0.37, 2.95±0.41 mm and the mean WTW values were 12.06±0.37, 12.01±0.37 mm obtained with Lenstar biometry and Sirius topography, respectively. The mean pupil x offset values were 0.22±0.12, 0.20±0.16 mm; mean pupil y offset values were 0.11±0.08, 0.12±0.10 mm, and the mean total pupil offset values were 0.25±0.15, 0.27±0.12 mm respectively, measured with Lenstar biometry and Sirius topography. Conclusion: In conclusion, there was no statistically significant difference between the pupil offset measurements of Lenstar biometry and Sirius topography devices. In other anterior segment parameters, there were statistically significant differences without any clinical significance.
Keywords: Lenstar biometry; sirius topography; anterior segment parameters
REFERANSLAR:
- Olsen T. Sources of error in intraocular lens power calculation. J Cataract Refract Surg. 1992;18(2):125-9. [Crossref]
- Doğanay S, Borazan M. [Intraocular lens power calculation problems in patient with prior keratorefractive surgery and optic coherence biometry]. Turkiye Klinikleri J Ophthalmol. 2004;13(2):94-103.
- Hoffer KJ, Shammas HJ, Savini G. Comparison of 2 laser instruments for measuring axial length. J Cataract Refract Surg. 2010;36(4):644-8. [Crossref] [PubMed]
- Savini G, Barboni P, Carbonelli M, Hoffer KJ. Repeatability of automatic measurements by a new Scheimpflug camera combined with Placido topography. J Cataract Refract Surg. 2011;37(10):1809-16. [Crossref] [PubMed]
- Arbelaez MC, Vidal C, Arba-Mosquera S. Clinical outcomes of corneal vertex versus central pupil references with aberration-free ablation strategies and LASIK. Invest Ophthalmol Vis Sci. 2008;49(12):5287-94. [Crossref] [PubMed]
- Randleman JB, Woodward M, Lynn MJ, Stulting RD. Risk assessment for ectasia after corneal refractive surgery. Ophthalmology. 2008;115(1):37-50. [Crossref] [PubMed]
- Coskunseven E, Jankov MR 2nd, Hafezi F. Contralateral eye study of corneal collagen cross-linking with riboflavin and UVA irradiation in patients with keratoconus. J Refract Surg. 2009;25(4):371-6. [Crossref] [PubMed]
- Polat O, Baysal Z, Özcan S, İnan S, İnan ÜÜ. Comparison of anterior segment measurements obtained by Aladdin optical biometer and sirius corneal topography. Turk J Ophthalmol. 2016;46(6):259-63. [Crossref] [PubMed] [PMC]
- Wallace DK, Plager DA. Corneal diameter in childhood aphakic glaucoma. J Pediatr Ophthalmol Strabismus. 1996;33(5):230-4. [PubMed]
- Hoffer KJ. Clinical results using the Holladay 2 intraocular lens power formula. J Cataract Refract Surg. 2000;26(8):1233-7. [Crossref]
- Vass C, Menapace R, Schmetterer K, Findl O, Rainer G, Steineck I. Prediction of pseudophakic capsular bag diameter based on biometric variables. J Cataract Refract Surg. 1999; 25(10):1376-81. [Crossref]
- Jin GJ, Crandall AS, Jones JJ. Intraocular lens exchange due to incorrect lens power. Oph thalmology. 2007;114(3):417-24. [Crossref] [PubMed]
- Binkhorst RD. The accuracy of ultrasonic measurements of the axial length of the eye. Ophthalmic Surg. 1981;12(5):363-5. [PubMed]
- Holladay JT, Prager TC, Chandler TY, Musgrove KH, Lewis JW, Ruiz RS. A three-part system for refining intraocular lens power calculations. J Cataract Refract Surg. 1988;14(1):17-24. [Crossref]
- Lee AC, Qazi MA, Pepose JS. Biometry and intraocular lens power calculation. Curr Opin Ophthalmol. 2008;19(1):13-7. [Crossref] [PubMed]
- Kirgiz A, Atalay K, Kaldirim H, Cabuk KS, Akdemir MO, Taskapili M. Scheimpflug camera combined with placido-disk corneal topography and optical biometry for intraocular lens power calculation. Int Ophthalmol. 2017;37(4):781-6. [Crossref] [PubMed]
- Bayhan HA, Aslan Bayhan S, Muhafız E, Can I. [Comparison of anterior segment parameters with optical low coherence reflectometer and combined Scheimpflug-placido disk topographer]. Glo-Kat. 2013;8(2):78-82.
- Milia M, Piñero DP, Amparo F, Alió JL. Pachymetric measurements with a new Scheimpflug photography-based system: intraobserver repeatability and agreement with optical coherence tomography pachymetry. J Cataract Refract Surg. 2011;37(2):310-6. [Crossref] [PubMed]
- Cruysberg LP, Doors M, Verbakel F, Berendschot TT, De Brabander J, Nuijts RM. Evaluation of the Lenstar LS 900 non-contact biometer. Br J Ophthalmol. 2010;94(1):10610. [Crossref] [PubMed]
- Huang J, Pesudovs K, Wen D, Chen S, Wright T, Wang X, et al. Comparison of anterior segment measurements with rotating Scheimpflug photography and partial coherence reflectometry. J Cataract Refract Surg. 2011;37(2):3418. [Crossref] [PubMed]
- Chen W, McAlinden C, Pesudovs K, Wang Q, Lu F, Feng Y, et al. Scheimpflug-Placido topographer and optical low coherence reflectometry biometer: repeatability and agreement. J Cataract Refract Surg. 2012; 38(9):1626-32. [Crossref] [PubMed]
- Gursoy H, Sahin A, Basmak H, Ozer A, Yildirim N, Colak E. Lenstar versus ultrasound for ocular biometry in a pediatric population. Optom Vis Sci. 2011;88(8):912-9. [Crossref] [PubMed]
- Németh G, Hassan Z, Módis L Jr, Szalai E, Katona K, Berta A. Comparison of anterior chamber depth measurements conducted with Pentacam HR ® and IOLMaster® . Ophthalmic Surg Lasers Imaging. 2011;42(2):144-7. [PubMed]
- Lee JY, Kim JH, Kim HM, Song JS. Comparison of anterior chamber depth measurement between Orbscan IIz and ultrasound biomicroscopy. J Refract Surg. 2007;23(5):487-91. [Crossref] [PubMed]
- Salouti R, Nowroozzadeh MH, Zamani M, Ghoreyshi M, Salouti R. Comparison of anterior chamber depth measurements using Galilei, HR Pentacam, and Orbscan II. Optometry. 2010;81(1):35-9. [Crossref] [PubMed]
- Meinhardt B, Stachs O, Stave J, Beck R, Guthoff R. Evaluation of biometric methods for measuring the anterior chamber depth in the non-contact mode. Graefes Arch Clin Exp Ophthalmol. 2006;244(5):559-64. [Crossref] [PubMed]
- Rabsilber TM, Khoramnia R, Auffarth GU. Anterior chamber measurements using Pentacam rotating Scheimpflug camera. J Cataract Refract Surg. 2006;32(3):456-9. [Crossref] [PubMed]
- Emre S, Koc B, Doğanay S, Yologlu S. [The alterations of the anterior chamber parameters measured with Pentacam with age in healthy subjects]. Turk Oftalmol Gaz. 2008;38(6):452-8.
- Zengin O, Selver OB, Ozbek Z, Yaman A, Durak İ. [Comparasion of orbscan II topography and ultrasound biometry in the measurement of anterior chamber depth]. Turk J Ophthalmol. 2009;39(1):27-31.
- Zernike F, Stratton FJM. Diffraction theory of the knife-edge test and its improved form, the phase-contrast method. Monthly Notices of the Royal Astronomical Society. 1934;94(5): 377-84. [Crossref]
- Salmon TO, van de Pol C. Evaluation of a clinical aberrometer for lower-order accuracy and repeatability, higher-order repeatability, and instrument myopia. Optometry. 2005;76(8): 461-72. [Crossref] [PubMed]
- Uozato H, Guyton DL. Centering corneal surgical procedures. Am J Ophthalmol. 1987; 103(3 Pt 1):264-75. [PubMed]
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