scholarly journals Posterior Chamber Phakic Intraocular Lenses for the Correction of Myopia: Factors Influencing the Postoperative Refraction

Optics ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 292-305
Author(s):  
Pedro Serra ◽  
Ángel Sánchez Trancón ◽  
Oscar Torrado Sierra ◽  
António Baptista ◽  
Santiago Cerpa Manito
Keyword(s):  
Retrospective Study ◽  
Intraocular Lenses ◽  
Posterior Chamber ◽  
Intraocular Lens Implantation ◽  
Phakic Intraocular Lens ◽  
Factors Influencing ◽  
Wide Range ◽  
Lens Implantation ◽  
Phakic Intraocular Lenses ◽  
Efficacy Index

Posterior chamber phakic intraocular lens implantation is a refractive technique for the correction of myopia. This study aimed to identify those factors contributing to variability in postoperative refraction. Methods: This retrospective study evaluated 73 eyes (one eye per patient) implanted with myopic implantable collamer lenses (ICL). Eyes were divided into two groups, the low myopic group (LMG) (ICL > −9.5 DS) and the high myopic group (HMG) (ICL ≤ −9.5 DS), to compare the predictability, efficacy index, and postoperative refraction between groups. The association of postoperative refraction with anatomical, demographic, and optical features was assessed through correlation analysis and investigated using ray-tracing. Results: Postoperative refraction at 3 months for the whole group was close to emmetropia at −0.02 ± 0.37 DS, the LMG tended toward myopia and the HMG, toward hyperopia. The results showed that 65% and 54% of the eyes had postoperative refraction of within ±0.25 DS, respectively, in the LMG and HMG, and in both groups, 100% were within ±1.00 DS. ICL implantation had a higher efficacy index in the HMG (1.13 ± 0.15) than in the LMG (1.04 ± 0.15). Postoperative refraction was positively associated with the vault (R = 0.408) and negatively correlated with ICL power (R = −0.382). Conclusion: The predictability and effectiveness of ICL implantation is high in a wide range of myopias. Considering the expected vault and including accurate vertex measurements would contribute to improving the predictability of the results.

Iris and ciliary body cysts and phakic intraocular lenses

2019 ◽  
Vol 30 (5) ◽  
pp. 974-977 ◽  
Author(s):  
AM Gharaibeh ◽  
I Liehneova ◽  
P Mojzis ◽  
P Ziak ◽  
Jorge L Alió
Keyword(s):  
Intraocular Lens ◽  
Intraocular Lenses ◽  
Posterior Chamber ◽  
Refractive Errors ◽  
Phakic Intraocular Lens ◽  
Lens Position ◽  
First Case ◽  
Lens Implantation ◽  
Phakic Intraocular Lenses ◽  
Iris Cyst

Phakic intraocular lenses are used to correct refractive errors. The procedure is predictable and potentially reversible. The procedure is not free of complications though. The occurrence of iris cyst after implantation of a phakic intraocular lens was not described previously in the literature. We describe two cases of iris cysts in the presence of a phakic intraocular lens; the first case describes a cyst which was not present prior to the anterior chamber phakic intraocular lens implantation. The second case describes a hidden iris cyst that affected the posterior chamber phakic intraocular lens position and lead to glaucoma.

scholarly journals Correction: Etiology and Management of Raised Intraocular Pressure following Posterior Chamber Phakic Intraocular Lens Implantation in Myopic Eyes

PLoS ONE ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. e0172929
Author(s):  
Sirisha Senthil ◽  
Nikhil S. Choudhari ◽  
Pravin K. Vaddavalli ◽  
Somasheila Murthy ◽  
Jagadesh C. Reddy ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Intraocular Lens ◽  
Posterior Chamber ◽  
Intraocular Lens Implantation ◽  
Phakic Intraocular Lens ◽  
Lens Implantation

scholarly journals Comparison of Patient's Satisfaction Level after Different Types of Posterior Chamber Intraocular Lens Implantation

ISRN Surgery ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-4
Author(s):  
Muhammad Waseem ◽  
Sadia Humayun ◽  
Omer Farooq ◽  
Quratulain Humayun ◽  
Sana Sadiq Sheikh
Keyword(s):  
Cataract Surgery ◽  
Intraocular Lens ◽  
Night Vision ◽  
Intraocular Lenses ◽  
Posterior Chamber ◽  
Satisfaction Level ◽  
Intraocular Lens Implantation ◽  
Patient’S Satisfaction ◽  
Posterior Chamber Intraocular Lens ◽  
Lens Implantation

Objective. To compare patient’s satisfaction level in performing routine activities during daylight and night vision after implantation with rigid, foldable, or rollable posterior chamber intraocular lens implants in uneventful cataract surgery. Design. Retrospective, cross-sectional. Place and Duration of Study. PNS SHIFA Hospital, Karachi, from Nov. 2009 to Nov. 2010. Methodology. 91 cataract surgery patients who had uneventful phacoemulsification, within the bag placement of intraocular lens and achieved best corrected visual acuity 6/9 or better were included in the study. Patients who developed postoperative complications were excluded. A specially designed questionnaire was used to assess patient’s satisfaction level of vision for those who underwent cataract surgery at least 3 months ago. Finally, they were categorized into five groups ranging from “very good” to “very poor.” SPSS version 16 was used to analyze the results. Results. There was a difference in satisfaction level between three groups. Vision was good in the day and the night with foldable posterior chamber intraocular lens implants. Conclusion. It was concluded that visual satisfaction level of patients who had foldable posterior chamber intraocular lens implantation was better during the day and night as compared to patients who had rigid or rollable posterior chamber intraocular lenses implantation.

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