The Relationship between Kappa Angle and Photic Phenomena after Trifocal Intraocular Lens Implantation
Abstract
Aim: This study aimed to investigate the relationship between photic phenomena and the kappa angle after trifocal lens implantations.
Material and Methods: Fifty eyes of 35 cases, 17 female and 18 male, were included in the study. The kappa angle was calculated with the Lenstar LS900 low-coherence interferometry device using the pupil barycenter parameter. It was also calculated by using the iris barycenter parameters. According to the calculations using the pupil barycenter distance, the patients were divided into two groups with the preoperative pupil barycenter distance below 0.4 mm and above 0.4 mm. A questionnaire was applied to the patients to evaluate complaints and satisfaction in the postoperative period.
Results: The mean preoperative pupil barycenter distance was 0.38±0.12 mm and 52.0% (n=26) of the measurements were below 0.40 mm, while the mean preoperative iris barycenter distance was 0.40±0.15 mm and 46.0% (n=23) of the measurements were below 0.40 mm. No significant correlation was found between the preoperative pupil barycenter distance and the preoperative iris barycenter distance (rs=0.086, p=0.553). Additionally, there was no statistically significant difference between the two groups concerning symptoms such as halo and glare (p=0.948).
Conclusion: When considering a kappa angle upper limit of 0.6 mm, there is no discernible difference in the frequency of occurrence of photic phenomena. We believe that both iris barycenter parameters and pupil barycenter parameters, utilized for kappa angle calculations, can be effectively employed to determine the deviation distance.
References
- Karhanová M, Pluháček F, Mlčák P, Vláčil O, Šín M, Marešová K. The importance of angle kappa evaluation for implantation of diffractive multifocal intra-ocular lenses using pseudophakic eye model. Acta Ophthalmol. 2015;93(2):e123-8.
- Marques EF, Ferreira TB. Comparison of visual outcomes of 2 diffractive trifocal intraocular lenses. J Cataract Refract Surg. 2015;41(2):354-63.
- Cochener B, Boutilier G, Lamard M, Auberger-Zagnoli C. A comparative evaluation of a new generation of diffractive trifocal and extended depth of focus intraocular lenses. J Refract Surg. 2018;34(8):507-14.
- Carballo-Alvarez J, Vazquez-Molini JM, Sanz-Fernandez JC, Garcia-Bella J, Polo V, García-Feijoo J, et al. Visual outcomes after bilateral trifocal diffractive intraocular lens implantation. BMC Ophthalmol. 2015;15:26.
- de Vries NE, Nujits RM. Multifocal intraocular lenses in cataract surgery: literature review of benefits and side effects. J Cataract Refract Surg. 2013;39(2):268-78.
- de Vries NE, Wabers CA, Touwslager WR, Bauer NJ, de Brabander J, Berendschot TT, et al. Dissatisfaction after implantation of multifocal intraocular lenses. J Cataract Refract Surg. 2011;37(5):859-65.
- Woodward MA, Randleman JB, Stulting RD. Dissatisfaction after multifocal intraocular lens implantation. J Cataract Refract Surg. 2009;35(6):992-7.
- Walkow T, Klemen UM. Patient satisfaction after implantation of diffractive designed multifocal intraocular lenses in dependence on objective parameters. Graefes Arch Clin Exp Ophthalmol. 2001;239(9):683-7.
- Domínguez-Vicent A, Monsálvez-Romín D, Pérez-Vives C, Ferrer-Blasco T, Montés-Micó R. Measurement of angle kappa with Orbscan II and Galilei G4: effect of accomodation. Graefes Arch Clin Exp Ophthalmol. 2014;252(2):249-55.
- Zarei-Ghanavatti S, Gharae H, Eslampour A, Abrishami M, Ghasemi-Moghadam S. Angle kappa changes after photorefractive keratectomy for myopia. Int Ophthalmol. 2014;34(1):15-8.
- Cankaya C, Ozsoy E, Demirel EE, Polat N, Gunduz A. Estimation of angle kappa and pupil barycentre configuration in myopic tilted disc syndrome. Clin Exp Optom. 2020;103(2):192-6.
- Park CY, Oh SY, Chuck RY. Measurement of angle kappa and centration in refractive surgery. Curr Opin Ophthalmol. 2012;23(4):269-75.
- Basmak H, Sahin A, Yildirim N, Papakostas TD, Kanellopoulos AJ. Measurement of angle kappa with synoptophore and Orbscan II in a normal population. J Refract Surg. 2007;23(5):456-60.
- Prakash G, Prakash DR, Agarwal A, Kumar DA, Agarwal A, Jacob S. Predictive factor and kappa angle analysis for visual satisfactions in patients with multifocal IOL implantation. Eye (Lond). 2011;25(9):1187-93.
- Cillino S, Casuccio A, Di Pace F, Morreale R, Pillitteri F, Cillino G, et al. One-year outcomes with new-generation multifocal intraocular lenses. Ophthalmology. 2008;115(9):1508-16.
- Palomino Bautista C, Carmona González D, Castillo Gómez A, Bescos JA. Evolution of visual performance in 250 eyes implanted with the Tecnis ZM900 multifocal IOL. Eur J Ophthalmol. 2009;19(5):762-8.
- Buznego C, Trattler WB. Presbyopia-correcting intraocular lenses. Curr Opin Ophthalmol. 2009;20(1):13-8.
- Moshifar M, Hoggan RN, Muthappan V. Angle kappa and its importance in refractive surgery. Oman J Ophthalmol. 2013;6(3):151-8.
- Qi Y, Lin J, Leng L, Zhao G, Wang Q, Li C, et al. Role of angle κ in visual quality in patients with a trifocal diffractive intraocular lens. J Cataract Refract Surg. 2018;44(8):949-54.
- Holladay JT, Simpson MJ. Negative dysphotopsia causes and rationale for prevention and treatment. J Cataract Refract Surg. 2017;43(2):263-75.
- Fu Y, Kou J, Chen D, Wang D, Zhao Y, Hu M, et al. Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses. J Cataract Refract Surg. 2019;45(9):1258-64.
- Wang R, Long T, Gu X, Ma T. Changes in angle kappa and angle alpha before and after cataract surgery. J Cataract Refract Surg. 2020;46(3):365-71.
- Holladay JT. Apparent chord mu and actual chord mu and their clinical value. J Cataract Refract Surg. 2019;45(8):1198-9.
- Koc H, Kaya F. Pupil barycenter configuration in patients with myopia and hyperopia. Int Ophthalmol. 2022;42(11):3441-7.
Abstract
Amaç: Bu çalışmanın amacı, trifokal lens implantasyonları sonrası fotik fenomen ile kappa açısı arasındaki ilişkiyi araştırmaktır.
Gereç ve Yöntemler: Çalışmaya 17 kadın ve 18 erkek olmak üzere 35 olgunun toplam 50 gözü dahil edildi. Kappa açısı, pupil barycenter parametresi kullanılarak Lenstar LS900 düşük koherens interferometri cihazı ile hesaplandı. Aynı zamanda iris barycenter parametreleri kullanılarak da hesaplandı. Pupil barycenter mesafesi kullanılarak yapılan hesaplamalara göre hastalar ameliyat öncesi pupil barycenter mesafesi 0,4 mm'nin altında olanlar ve 0,4 mm'nin üzerinde olanlar şeklinde iki gruba ayrıldı. Ameliyat sonrası dönemde şikayetleri ve memnuniyetleri değerlendirmek amacıyla hastalara anket uygulandı.
Bulgular: Ameliyat öncesi ortalama pupil barycenter mesafesi 0,38±0,12 mm ve ölçümlerin %52,0'si (n=26) 0,40 mm'nin altında iken, ameliyat öncesi ortalama iris barycenter mesafesi 0,40±0,15 mm ve ölçümlerin %46,0'sı (n=23) 0,40 mm'nin altındaydı. Ameliyat öncesi pupil barycenter mesafesi ile ameliyat öncesi iris barycenter mesafesi arasında istatistiksel olarak anlamlı bir korelasyon yoktu (rs=0,086, p=0,553). Ek olarak, iki grup arasında halo ve kamaşma gibi semptomlar açısından da istatistiksel olarak anlamlı bir fark yoktu (p=0,948).
Sonuç: Kappa açısı için üst sınır 0,6 mm olarak dikkate alındığında fotik fenomenlerin meydana gelme sıklığında fark edilebilir bir fark yoktur. Kappa açısı hesaplamalarında kullanılan hem iris barycenter parametrelerinin hem de pupil barycenter parametrelerinin sapma mesafesini belirlemek için etkili bir şekilde kullanılabileceğine inanıyoruz.
References
- Karhanová M, Pluháček F, Mlčák P, Vláčil O, Šín M, Marešová K. The importance of angle kappa evaluation for implantation of diffractive multifocal intra-ocular lenses using pseudophakic eye model. Acta Ophthalmol. 2015;93(2):e123-8.
- Marques EF, Ferreira TB. Comparison of visual outcomes of 2 diffractive trifocal intraocular lenses. J Cataract Refract Surg. 2015;41(2):354-63.
- Cochener B, Boutilier G, Lamard M, Auberger-Zagnoli C. A comparative evaluation of a new generation of diffractive trifocal and extended depth of focus intraocular lenses. J Refract Surg. 2018;34(8):507-14.
- Carballo-Alvarez J, Vazquez-Molini JM, Sanz-Fernandez JC, Garcia-Bella J, Polo V, García-Feijoo J, et al. Visual outcomes after bilateral trifocal diffractive intraocular lens implantation. BMC Ophthalmol. 2015;15:26.
- de Vries NE, Nujits RM. Multifocal intraocular lenses in cataract surgery: literature review of benefits and side effects. J Cataract Refract Surg. 2013;39(2):268-78.
- de Vries NE, Wabers CA, Touwslager WR, Bauer NJ, de Brabander J, Berendschot TT, et al. Dissatisfaction after implantation of multifocal intraocular lenses. J Cataract Refract Surg. 2011;37(5):859-65.
- Woodward MA, Randleman JB, Stulting RD. Dissatisfaction after multifocal intraocular lens implantation. J Cataract Refract Surg. 2009;35(6):992-7.
- Walkow T, Klemen UM. Patient satisfaction after implantation of diffractive designed multifocal intraocular lenses in dependence on objective parameters. Graefes Arch Clin Exp Ophthalmol. 2001;239(9):683-7.
- Domínguez-Vicent A, Monsálvez-Romín D, Pérez-Vives C, Ferrer-Blasco T, Montés-Micó R. Measurement of angle kappa with Orbscan II and Galilei G4: effect of accomodation. Graefes Arch Clin Exp Ophthalmol. 2014;252(2):249-55.
- Zarei-Ghanavatti S, Gharae H, Eslampour A, Abrishami M, Ghasemi-Moghadam S. Angle kappa changes after photorefractive keratectomy for myopia. Int Ophthalmol. 2014;34(1):15-8.
- Cankaya C, Ozsoy E, Demirel EE, Polat N, Gunduz A. Estimation of angle kappa and pupil barycentre configuration in myopic tilted disc syndrome. Clin Exp Optom. 2020;103(2):192-6.
- Park CY, Oh SY, Chuck RY. Measurement of angle kappa and centration in refractive surgery. Curr Opin Ophthalmol. 2012;23(4):269-75.
- Basmak H, Sahin A, Yildirim N, Papakostas TD, Kanellopoulos AJ. Measurement of angle kappa with synoptophore and Orbscan II in a normal population. J Refract Surg. 2007;23(5):456-60.
- Prakash G, Prakash DR, Agarwal A, Kumar DA, Agarwal A, Jacob S. Predictive factor and kappa angle analysis for visual satisfactions in patients with multifocal IOL implantation. Eye (Lond). 2011;25(9):1187-93.
- Cillino S, Casuccio A, Di Pace F, Morreale R, Pillitteri F, Cillino G, et al. One-year outcomes with new-generation multifocal intraocular lenses. Ophthalmology. 2008;115(9):1508-16.
- Palomino Bautista C, Carmona González D, Castillo Gómez A, Bescos JA. Evolution of visual performance in 250 eyes implanted with the Tecnis ZM900 multifocal IOL. Eur J Ophthalmol. 2009;19(5):762-8.
- Buznego C, Trattler WB. Presbyopia-correcting intraocular lenses. Curr Opin Ophthalmol. 2009;20(1):13-8.
- Moshifar M, Hoggan RN, Muthappan V. Angle kappa and its importance in refractive surgery. Oman J Ophthalmol. 2013;6(3):151-8.
- Qi Y, Lin J, Leng L, Zhao G, Wang Q, Li C, et al. Role of angle κ in visual quality in patients with a trifocal diffractive intraocular lens. J Cataract Refract Surg. 2018;44(8):949-54.
- Holladay JT, Simpson MJ. Negative dysphotopsia causes and rationale for prevention and treatment. J Cataract Refract Surg. 2017;43(2):263-75.
- Fu Y, Kou J, Chen D, Wang D, Zhao Y, Hu M, et al. Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses. J Cataract Refract Surg. 2019;45(9):1258-64.
- Wang R, Long T, Gu X, Ma T. Changes in angle kappa and angle alpha before and after cataract surgery. J Cataract Refract Surg. 2020;46(3):365-71.
- Holladay JT. Apparent chord mu and actual chord mu and their clinical value. J Cataract Refract Surg. 2019;45(8):1198-9.
- Koc H, Kaya F. Pupil barycenter configuration in patients with myopia and hyperopia. Int Ophthalmol. 2022;42(11):3441-7.
Details
| Primary Language | English |
|---|---|
| Subjects | Clinical Sciences |
| Journal Section | Research Article |
| Authors | |
| Early Pub Date | August 13, 2023 |
| Publication Date | August 30, 2023 |
| Submission Date | April 7, 2023 |
| Published in Issue | Year 2023 Volume: 25 Issue: 2 |
Cite
Cited By
Angle Kappa Influence on Multifocal IOL Outcomes
Journal of Refractive Surgery
https://doi.org/10.3928/1081597X-20231101-01
Duzce Medical Journal is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.