scholarly journals Refractive lens exchange in high myopia: long term follow up

2005 ◽  
Vol 89 (6) ◽  
pp. 670-672 ◽  
Author(s):  
N Horgan
2014 ◽  
pp. 33 ◽  
Author(s):  
Ioannis Aslanides ◽  
Panagiotis Georgoudis ◽  
Vasilis Selimis ◽  
Achyut Mukherjee

2019 ◽  
Vol 30 (3) ◽  
pp. 446-454 ◽  
Author(s):  
Alfredo Vega-Estrada ◽  
Jorge L Alio

Objective: Report the outcomes of laser in situ keratomileusis (LASIK) for high myopia correction after long-term follow-up. Methods: Retrospective, consecutive, clinical study including 70 eyes that underwent LASIK using a 500 Hertz (Hz) repetition rate excimer laser and femtosecond technology for flap creation. Visual, refractive, corneal aberrations, and correlation among the variables were evaluated during 3 years. In addition, 34 eyes were followed during 5 years. Results: Significant improvement of 17 logMAR lines was observed in uncorrected vision at 5 years (p < 0.01). This was consistent with spherical equivalent reduction that came from mean preoperative –7.79 diopters (D) to 5 years postoperative –0.24 D (p < 0.01). Significant induction of primary spherical aberration and coma aberration was also found (p < 0.01) at 3 months with levels of 0.61 µm and 0.47 µm, respectively, with no further changes at 5 years (p > 0.05). Pearson correlation showed that the amount of high-order aberrations at 3 months postoperativeley was significantly correlated with the changes in the keratometry throughout the 5 years (delta K) (R2 0.242 p = 0.05). Finally, preoperative corneal asphericity showed an inverse correlation with the delta K (R2 –308 p = 0.01). Conclusions: Results from this study suggests that LASIK for high myopia correction using 500 Hz repetition rate excimer laser provides stable visual, refractive and aberrometric results after 5 years of follow-up. A more prolate cornea and the amount of higher-order aberrations induced after LASIK are factors that negatively impact in the long-term stability of the procedure.


Author(s):  
G.V. Sorokoletov ◽  
◽  
E.R. Tumanyan ◽  
A.N. Bessarabov ◽  
M.A. Soboleva ◽  
...  

The formation of secondary cataracts in patients with high-grade myopia remains the main cause of vision loss in the long-term postoperative period. Taking this into account, a soft model of posterior chamber «reverse» IOL was developed in the Fyodorov Eye Microsurgery Federal State Institution, Moscow, which allows reducing the development of secondary cataracts. Purpose. Comparative analysis the clinical and functional results of implantation of «reverse M and M1» IOL in patients with high myopia in the long-term follow-up. Materials and methods. Clinical studies were conducted on 140 eyes of 97 patients with high-grade myopia aged from 42 to 83 years (on average, 64.24±0.79 years) after phacoemulsification cataract (FEC) with IOL implantation in high-grade myopia. The main group consisted of 57 eyes of 40 patients who were implanted with «reverse-M1» IOL, the control group-83 eyes of 57 patients who were implanted with «reverse-M» IOL. Visual acuity before surgery without correction in any patient did not exceed 0.01, and with the maximum correction was no more than 0.2 (80%). The follow-up period was up to 5 years. Results. Visual functions in the majority of patients increased and remained stable throughout the postoperative period, amounting to 0.55+0.04 in the main group, and 0.54+0.03 in the control group. In the late postoperative period, dissection of the posterior lens capsule with «reverse-M» IOL was performed in 11 eyes of 13 patients (13.2%), in the main group, YAG laser dissection of the posterior capsule was required in 2 patients with 3 eyes (5.3%). Conclusions. Implantation of a «reverse-M1» IOL is safe, predictable and allows you getting less PCO formation compare with «reverse-M» IOL in the long-term follow-up in patients with high myopia. Keywords: phacoemulsification cataract, implantation of «reverse» IOL, high myopia.


2019 ◽  
Vol 42 ◽  
Author(s):  
John P. A. Ioannidis

AbstractNeurobiology-based interventions for mental diseases and searches for useful biomarkers of treatment response have largely failed. Clinical trials should assess interventions related to environmental and social stressors, with long-term follow-up; social rather than biological endpoints; personalized outcomes; and suitable cluster, adaptive, and n-of-1 designs. Labor, education, financial, and other social/political decisions should be evaluated for their impacts on mental disease.


2001 ◽  
Vol 120 (5) ◽  
pp. A397-A397
Author(s):  
M SAMERAMMAR ◽  
J CROFFIE ◽  
M PFEFFERKORN ◽  
S GUPTA ◽  
M CORKINS ◽  
...  

2001 ◽  
Vol 120 (5) ◽  
pp. A204-A204
Author(s):  
B GONZALEZCONDE ◽  
J VAZQUEZIGLESIAS ◽  
L LOPEZROSES ◽  
P ALONSOAGUIRRE ◽  
A LANCHO ◽  
...  

2001 ◽  
Vol 120 (5) ◽  
pp. A754-A755 ◽  
Author(s):  
H ALLESCHER ◽  
P ENCK ◽  
G ADLER ◽  
R DIETL ◽  
J HARTUNG ◽  
...  

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