ocular aberrations and quality of vision with aspheric single-piece and spherical multi- piece iol:...
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![Page 1: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/1.jpg)
Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi-
Piece IOL: Contra lateral Comparative Study
Ahmed Assaf MD, FRCSEd
the author of this poster have received travel expense reimbursement from AMO Company
![Page 2: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/2.jpg)
Intraocular Lenses (IOLs)
• Spherical aberration (SA) and coma are the commonest HOAs to affect quality of vision
• Aspheric IOLs with negative SA aim to balance the positive corneal SA, thus reducing the amount of total ocular SA with respect to conventional spherical IOLs
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Spherical 3-piece (Sensar AR40e) IOL
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Aspheric (Tecnis 1-P, Tecnis ZCB00) IOL
OPTIC of the lens has negative spherical aberration of 0.27µm to compensate for average corneal positive spherical aberration
![Page 5: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/5.jpg)
Purpose of the Study
• To test visual outcomes and higher ocular aberrations of aspheric (Tecnis 1-P) IOL against spherical (Sensar AR40e™) biconvex multi-piece IOL.
• Both lenses are made of hydrophobic acrylic and by the same company (AMO, Abbott Medical Optics, Santa Ana, CA)
![Page 6: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/6.jpg)
P=0.81P<0.001
Pre OperativePre Operative Post OperativePost Operative
Mic
ron
Mic
ron
0.28±0.08
0.29±0.09
0.006±0.03
0.42±0.11
VISX ™ WaveScan Wavefront System VISX ™ WaveScan Wavefront System
SphericalSpherical(Sensar)(Sensar)
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
SphericalSpherical(Sensar)(Sensar)
OCULUS Optikgeräte GmbH, Easygraph
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
n=28
Spherical Aberration
![Page 7: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/7.jpg)
P=0.88
P=0.76
Pre OperativePre Operative Post OperativePost Operative
Mic
ron
Mic
ron
0.167±0.09
0.158±0.0850.154
±0.0710.151±0.071
VISX ™ WaveScan Wavefront System VISX ™ WaveScan Wavefront System
SphericalSpherical(Sensar)(Sensar)
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
SphericalSpherical(Sensar)(Sensar)
OCULUS Optikgeräte GmbH, Easygraph
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
Coma
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P=0.38
Pre OperativePre Operative Post OperativePost Operative
Mic
ron
Mic
ron
0.185 ± 0.12 0.162
± 0.12
0.157 ± 0.13
0.145 ± 0.12
VISX ™ WaveScan Wavefront System VISX ™ WaveScan Wavefront System
SphericalSpherical(Sensar)(Sensar)
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
SphericalSpherical(Sensar)(Sensar)
OCULUS Optikgeräte GmbH, Easygraph
AsphericAspheric(Tecnis 1-P)(Tecnis 1-P)
P=0.47
Trefoil
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Aspheric IOL (mean±SD) Spherical IOL (mean±SD) P
Sphere (D) -0.01D±0.60 -0.06D±0.67 P=0.67
Cylinder (D) -0.57D±0.30 -0.55D±0.32 P=0.84
Spherical Equivalent (D) -0.30D±0.66 -0.34D±0.74 P=0.69
LogMAR BCVA 0.046±0.01 0.053±0.09 P=0.78
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Log
Cont
rast
Sen
sitiv
ity (C
S)Lo
g Co
ntra
st S
ensi
tivity
(CS)
Cycles per Degree (CPD)Cycles per Degree (CPD)
n=28 VectorVisionTM 1000E Chart
85cd/m2
6 wks postop.P=0.043
![Page 11: Ocular Aberrations and Quality of Vision with Aspheric Single-Piece and Spherical Multi- Piece IOL: Contra lateral Comparative Study Ahmed Assaf MD, FRCSEd](https://reader034.vdocument.in/reader034/viewer/2022051516/56649d975503460f94a81a10/html5/thumbnails/11.jpg)
Log
Cont
rast
Sen
sitiv
ity (C
S)Lo
g Co
ntra
st S
ensi
tivity
(CS)
Cycles per Degree (CPD)Cycles per Degree (CPD)
P<0.001
P<0.001
P<0.001
P<0.001
n=28 VectorVisionTM 1000E Chart
6cd/m2
6 wks postop.
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Conclusion
Aspheric (Tecnis 1-P) IOL significantly reduce ocular spherical aberration. This is reflected as improved quality of vision mainly in mesopic conditions.
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No significant differences regards ocular coma and trefoil of aspheric single piece IOL compared to spherical multi-piece IOL.
Thank You
Conclusion