Influence Of Angle Alpha On Image Quality Metrics In Eyes With Asymmetric Refractive Edof
Published 2025 - 43rd Congress of the ESCRS
Reference: FP05.12 | Type: Free paper | DOI: 10.82333/bspn-mw55
Authors: Siddharth Sheth* 1 , Smitesh Shah 2 , Sonal Shah 1 , Mohammed Kazi 3
1Cataract and Refractive Surgery,Isha Netralaya,Thane,India, 2Cataract ,Isha Netralaya,Thane,India, 3Optometry,Isha Netralaya,Thane,India
Purpose
To evaluate the effect of angle alpha on image quality metrics in eyes with asymmetric refractive EDOF IOLs.
Setting
Tertiary private eye hospital, India
Methods
A retrospective study where subjects implanted with asymmetric refractive EDOF IOL (Comfort Lentis, Teleon Surgical BV), aged 40-70 years with BCVA better than 0.2 logMAR were included. Subjects with IOP > 22mmHg, any ocular disease, previous refractive surgery, any intra-operative complications were excluded. At 1 month follow up, internal HOA (3rd, 4th and 5th order) and MTF at 5,10,15,20,25,30 cycle per degrees were obtained using i-Trace aberrometer for 4mm fixed pupil and compared among two groups.For Statistical purpose the eyes were divided in to two groups based on angle alpha magnitude (Group 1:≤ 0.45 and Group 2: > 0.45) and the defocus curve was compared using two sample t test.
Results
The mean±SD magnitude of angle alpha in group 1 (31 eyes) and group 2 (22 eyes) were 0.27±0.09 and 0.53±0.1 respectively (p<0.001). Higher order aberrations and MTF at all spatial frequencies were found to be similar in both the groups (Two sample t test, p>0.05).
Conclusions
We did not find any effect of angle alpha on internal HOA and image quality metrics in eyes with asymmetric refractive EDOF IOLs.