Moderator
Dagny Zhu, MD, ABO
Panelists
Jason J. Jones, MD
Paul J. Harasymowycz, MD, FRCSC, MSc
Viewing Papers
Expand a paper title to the right to view the paper abstract and authors. Use the video link to jump to that poster in the session.
Presenting Author
Dilek Dursun Alt?nors, FACS, MD
Co-Authors
Leyla Asena MD, Sena Karabay MD
Purpose
To evaluate the clinical findings and results in retropupillary implantation of iris-claw intraocular lenses (IOLs) used to correct aphakia in patients with insufficient capsular support
Methods
The records of 36 eyes of 36 patients who were implanted with a retropupillary iris-claw IOL between June 2021 and April 2024 were retrospectively reviewed. Preoperative characteristics and postoperative clinical results of the patients were evaluated. Refraction, visual acuity, intraoperative and postoperative complications were recorded. Pre- and postoperative values were compared with the non-parametric Wilcoxon test.
Results
The f/m ratio was 1/1 and the mean age was 71.4�20.4 years(8-92). Surgical indications were IOL dislocation (n=31), aphakia (n=3), and trauma (n=2). The mean postoperative follow-up was 18.5�10.2 months. The mean preoperative BCVA(LogMAR) was 0.75�0.84 (0.1-3.0), and increased to 0.40�0.39 (0.0-1.5) postoperatively (p=0.51). Preoperative mean manifest sphere, cylinder and spherical equivalents were 5.72�7.78 D; -2.19�3.60 D and 5.46�8.09 D; which decreased to 1.12�1.51 D; -0.27�1.63 D and -0.03�1.83 D postoperatively (p=0.12; p=0.05 and p=0.005, respectively). Postoperative complications were hyphema in 2 patients, pupillary asymmetry in 4 patients, and retinal detachment in 1 patient.
Conclusion
Retropupillary implantation of iris-claw intraocular lenses in aphakic eyes without zonule support is a successful surgical option that can achieve favorable visual and anatomical results.
Presenting Author
Leyla Asena, MD
Co-Authors
Dilek Dursun Alt?nors MD, FACS
Purpose
To compare the clinical results of retropupillary iris claw versus conventional scleral-sutured posterior chamber intraocular lenses in the treatment of aphakia without zonular support.
Methods
Retrospective chart review was performed. A total of 58 patients operated between January 2018 and 2024 were included; 36 eyes were implanted with a retropupillary iris-claw IOL and 22 with conventional scleral-sutured posterior chamber intraocular lenses. Indications for surgery included aphakia due to complicated cataract surgery, dislocated IOL, and trauma. The mean postoperative follow-up was 34.0�11.6 months.
Results
The mean operation time in the iris-claw group was significantly shorter than the suture group (30.8�11.9 vs. 65.0�28.7 min, p=0.004). Both groups demonstrated significant improvements in BCVA (P = 0.030 for scleral sutured group and P = 0.018 for iris claw group). The mean spherical equivalent of postoperative subjective refraction in the iris claw group was -0.03�1.83 D, while that in the suture group was 1.12�1.51 D. Postoperative complications in the iris-claw group were hyphema in 2 patients, pupillary asymmetry in 4 patients, and retinal detachment in 1 patient. In scleral suture group, 4 patients developed suture exposure, and 2 patients had a decentered IOL requiring re-operation.
Conclusion
Iris-claw lenses are associated with a shorter operation time, better postoperative refraction and lower rate of re-operation when compared to conventional scleral sutured posterior chamber IOLs
Presenting Author
Purendra Bhasin, MS
Purpose
To evaluate the postoperative outcomes, visual acuity, and intraocular lens (IOL) stability following the Modified Yamane technique for intrascleral fixation of three-piece IOLs.
Methods
This retrospective observational study included 33 eyes from 31 patients who underwent secondary IOL implantation using the Modified Yamane technique. The study included patients with dislocated/subluxated IOLs or crystalline lenses, poor capsular support/weak zonules, or spherophakia who underwent scleral-fixated IOL surgery using the Modified Yamane technique, with a minimum follow-up period of 3 months postoperatively. Patients were excluded if they underwent SFIOL surgery using other techniques, had a postoperative follow-up of less than 3 months, or did not consent to using their clinical data for research purposes.
Results
The study included 33 eyes from 31 patients, of whom 20 were male and 11 were female. Postoperative best-corrected visual acuity (BCVA) ranged from 6/6 to 6/9 in 12 eyes (39.3%), 6/12 to 6/18 in 10 eyes (30.3%), 6/24 to 6/36 in 4 eyes (12.1%), and 6/60 or worse in 5 eyes (15.1%). Pre-existing ocular comorbidities were present in 11 patients. Corneal edema and iritis were observed in 5 eyes on postoperative days 1-4, resolving within one week with conservative management. Postoperative complications included hypotony in 1 eye, vitreous hemorrhage in 1 eye, and conjunctival erosion due to haptic protrusion in 1 eye, which was managed by haptic trimming.
Conclusion
The Modified Yamane technique appears to be safe and time-efficient for patients with inadequate posterior capsule support. The IOL remained stable in all cases, and visual outcomes were largely determined by associated ocular comorbidities.
Presenting Author
Dylan B McBee, BSc
Co-Authors
Karim Kozhaya MD, Li Wang PhD, MD, Douglas Koch MD, Mitchell Weikert MD, MS
Purpose
To assess astigmatism induced by aspheric and toric intraocular lens tilt with a ray-tracing eye model that incorporates patient biometric data.
Methods
Optical ray-tracing software (Ansys Zemax OpticStudio �) was used to construct a pseudophakic eye model with aspheric and toric IOLs of varying tilt magnitude. The eye model utilized biometric data obtained from pseudophakic eyes using the Pentacam� and Eyestar-900�. Measured aberrations obtained with the Wavedyn� were compared with aberrations simulated via ray tracing to validate the eye model. Astigmatism at the corneal plane induced by IOL tilt was then determined.
Results
Customized ray-tracing eye models closely approximated lower- and higher-order aberrations in pseudophakic eyes implanted with Tecnis Eyhance toric IOLs (R2 > 0.90). Varying tilt magnitude was found to modulate astigmatism according to the power and toricity of the lens. Moreover, tilting toric IOLs contributed to an overcorrection of against-the-rule astigmatism or undercorrection of with-the-rule astigmatism based on lens alignment.
Conclusion
Ray-tracing eye models that incorporate patient-specific biometric data may be used to reliably simulate measured wavefront aberrations. Modulating eye model tilt beyond measured values provides utility in exploring how IOL power, toricity, and alignment as well as inherent biometric features of the eye contribute to postoperative astigmatism.
Presenting Author
Priya M. Mathews, MD, MPH, ABO
Co-Authors
Srividhya Vilupuru OD, PhD, Daniel Muenz PhD, Daniel Cheng OD
Purpose
To assess real-world outcomes and visual performance of a full visual range (FVR) intraocular lens (IOL), which incorporates a smoother diffractive profile intended to deliver a continuous range of vision, higher tolerance to refractive error, and reduced symptoms of dysphotopsia.
Methods
Clinical records from 16 surgeons at 12 US sites were reviewed retrospectively for patients bilaterally implanted with the FVR IOL over a 5-month period. Preoperative, operative and postoperative 1-month data were evaluated. Key performance outcomes included binocular distance and near visual acuity, non-directed visual symptoms, and spectacle use and prescription. Evaluation of visual acuities was per the investigators� standard of care.
Results
A total of 96 subjects were bilaterally implanted and met the inclusion/exclusion criteria. Mean � SD binocular logMAR UCDVA was 0.01 � 0.07 (20/20 Snellen equivalent), BCDVA was -0.03 � 0.07 (20/20 Snellen), and UCNVA at 40 cm was 0.10 � 0.09 (J1 equivalent). 90% of subjects did not experience any dysphotopsias in their first eye, or if present, did not rate or only rated them as mild. At the 1-month postoperative visit, 93% of subjects had not used spectacles since the surgery and 96% did not need a spectacle prescription.
Conclusion
This real-world study suggests that the lens demonstrates a full range of distance to near visual performance, with none to minimal visual symptoms typically associated with Full Visual Range IOLs and a high rate of postoperative spectacle independence.
Presenting Author
Adam K. Muzychuk, MD, FRCSC
Co-Authors
Paul Harasymowycz FRCSC, MSc, MD
Purpose
To report the visual performance and patient-reported outcomes after implantation of a novel Full Range of Vision IOL in cataract/refractive lens exchange (RLE) patients
Methods
This retrospective, single-center study included cataract patients who underwent cataract surgery/refractive lens exchange with implantation of a novel full range of vision IOL (enVista Envy and Envy toric, Bausch & Lomb). Outcome measures included monocular visual acuities at distance, intermediate and near on ETDRS charts, refractive outcomes, and assessment of patient-reported dysphotopsias. Patients were excluded if they had vision-limiting ocular comorbidities.
Results
Twenty-nine eyes (16 toric) of 20 patients were evaluated after a minimum of 28 days. Mean BCDVA was -0.017 logMAR with 90% achieving 20/20 or better. Mean UCDVA was 0.041 logMAR with 66% achieving 20/20 or better, and 86.2% 20/25 or better. Mean UCIVA was 0.061 logMar with 86.2% 20/25 or better. UCNVA was 0.060 logMAR with 82.8% 20/25 or better. For toric eyes, 100% had ?0.75D residual cylinder, 87.5% ?0.25D. Only one patient reported any of glare, haloes or starbursts to be more than mildly bothersome (starburst).
Conclusion
At 28 days or more, enVista Envy and Envy Toric demonstrated excellent uncorrected acuities at distance, intermediate and near, with low rates of bothersome dysphotopsias. Eyes implanted with Envy Toric had consistently low rates of residual cylinder.
Presenting Author
Adam K. Muzychuk, MD, FRCSC
Co-Authors
Paul Harasymowycz FRCSC, MSc, MD
Purpose
Patient satisfaction with visual function and perception of dysphotopsias after multifocal full range of vision intraocular lens (FRoV IOL) implantation has been associated with residual astigmatism. The effect of residual astigmatism on dysphotopsias and patient satisfaction with near vision is evaluated in patients implanted with a novel FRoV IOL
Methods
Postoperative 6-month data of the residual cylinder from 2 prospective, multicenter, clinical trials of a FRoV enVista Envy IOL (Bausch + Lomb) was collected and analyzed. The residual cylinder values were converted to negative cylinder notation for analysis. The worst residual cylinder over both eyes was considered for analysis. The relationships of residual cylinder with frequency, severity, and bothersomeness of glare and halos, and patient satisfaction with near vision were assessed using a logistic regression model.
Results
For patient satisfaction with near vision, the model results suggest that the chances of poor satisfaction reduce as the magnitude of residual astigmatism decreases (odds ratio=0.077, p=0.0212). No statistically significant relationship was observed between the residual cylinder and the frequency, severity, and bothersomeness of glare and halos (all p>0.05). Logistic regression found that residual cylinder was not a predictor of severe response to frequency, bothersomeness, and severity of glare (odds ratio=1.7, p=0.4209) or halos (odds ratio=1.6, p=0.1945).
Conclusion
The present study results showed that patients with lower amounts of residual astigmatism exhibited better postoperative satisfaction. The residual cylinder following the implantation of enVista Envy FRoV IOL had no statistical effect on the frequency, severity, and bothersomeness of glare and halos.
Presenting Author
Marcela Barros, MD
Co-Authors
Karolinne Rocha MD, PhD, Rupal Trivedi MD, Marcony Santhiago MD, PhD
Purpose
To determine tolerance to induced astigmatism in eyes implanted with three intraocular lenses (IOLs): a standard Monofocal IOL with negative spherical aberration (ZCBOO; J&J), an enhanced monofocal IOL (Eyehance, J&J), and a diffractive extended depth of focus (EDOF) IOL with violet filter (Symfony opti blue, J&J)
Methods
This prospective, observational study enrolled 70 patients who underwent routine cataract surgery with implantation of standard monofocal IOL (Gr 1, n=20), enhanced monofocal (Gr 2, n=20), and a diffractive EDOF IOL with violet filter (Gr 3, n=30). Visual acuity was recorded in a stepwise fashion, starting with no induced astigmatism, and then introducing increasing power of plus cylinders from +0.50 to +2.00 D at 1-3 months postoperatively. Astigmatic defocus was tested in against-the- rule, with-the-rule, and oblique astigmatism orientations. Outcome measures included UCVA, DCVA, DCIVA, DCNVA and astigmatic defocus curves. Results are presented in groups 1,2 and 3, respectively.
Results
DCNVA, and DCIVA was significantly better in the group 3. Median astigmatic defocus to maintain visual acuity within one-line reduction was 1 D (P > 0.05) in the WTR. In oblique induced, it was 0.5, 1, and 0.5. In the ATR, it was 0.25, 1.25, and 0.5(P=0.003). Median astigmatic defocus to maintain visual acuity within 2-line reduction was also significantly different in ATR. Ninety to 100% of eyes were within 2 lines after 0.5 D induced astigmatism in WTR and oblique cohort while for ATR, it was 80 to 95%. With 0.5 D-induced WTR astigmatism, visual acuity difference was not significant (P=0.492). In 0.5 D oblique and WTR astigmatism visual acuity was significant between 2 and 3.
Conclusion
Induced WTR astigmatism was better tolerated in the ZCBOO and DIBOO groups compared with ZXR00V. There were no statistically significant differences between the ZCBOO and ZXR00V groups at induced ATR and oblique orientations, with the DIBOO group showing superior TIA.
Presenting Author
Amit R. Chokshi, MD
Co-Authors
Rajesh Shetty MD, Kathryn Freidl MD, S. Akbar Hasan MD, McGregor Lott MD, Mark Paauw MD, Dontia Orey PharmD, Rebecca Goldfaden PharmD, Joanne Francis MD
Purpose
To assess whether post-operative visual acuity is associated with decentration or tilt with Clareon Vivity� and Clareon Vivity� Toric IOLs.
Methods
Non-interventional, observational study. Enrolled 101 subjects (n=202 eyes) implanted with Clareon� Vivity� (n=140) or � Vivity� Toric (n=62) IOLs. Preoperative and operative data were collected retrospectively. Postoperative assessments occurred at least one-month post-operation and included monocular distance corrected and uncorrected visual acuities at distance (BCDVA, UDVA) and intermediate (DCIVA, UIVA, 66 cm), decentration and tilt of the IOLs (using the Casia2), mesopic pupil size, coma, and spherical corneal higher-order aberrations. Primary outcome measures include the association between monocular BCDVA and lens decentration and between monocular BCDVA and lens tilt.
Results
Mean IOL decentration was 0.21mm (SD 0.127), mean IOL tilt was 5.6? (SD 1.178), mean MRSE was -0.15, mean mesopic pupil size was 2.98mm, mean BCDVA was 0.06 (logMAR), mean UDVA was 0.16 (logMAR), mean DCIVA was 0.02 (logMAR), and mean UIVA was 0.02 (logMAR). There was no relationship monocular BCDVA and decentration (r=0.122, p=0.08) or tilt (r=0.056, p=0.43) with the Clareon� Vivity� and Clareon� Vivity� Toric IOLs. There was no relationship identified between monocular DCIVA and decentration (r=0.07, p=0.34) or tilt (r=-0.13, p=0.07). The lack of relationship between BCDVA did not change when controlled for the other measure (i.e. decentration or tilt).
Conclusion
Clareon� Vivity and Vivity Toric IOLs provide excellent monocular BCDVA and DCIVA. No significant correlations were found between monocular BCDVA or DCIVA and IOL decentration or tilt. This suggests that Vivity IOLs provide good tolerance to IOL decentration and tilt which may ultimately result in improved patient satisfaction.
Presenting Author
Karl G. Stonecipher, MD, ABO
Purpose
To assess the early postoperative 1-hour visual acuity outcomes of a novel monofocal plus IOL with intermediate optimized optics to enhance the depth of focus in patients undergoing cataract surgery.
Methods
This prospective study included patients who underwent cataract surgery and implantation of a novel monofocal plus IOL that uses higher-order aspheric coefficients on the posterior surface to create a broad depth of focus (enVista Aspire, Bausch & Lomb). Outcomes measures were monocular uncorrected distance (UDVA) and near (UNVA) visual acuity at 1 hour following cataract surgery and IOL implantation.
Results
Preliminary analysis (N = 50) showed that the median 1-hour UDVA was 0.994 decimal. At 1 hour following surgery, 88% of eyes achieved UDVA of 20/25 or better and all (100%) had UDVA of 20/30 or better. UCNVA showed 64% of eyes achieved 20/40 or better postoperatively.
Conclusion
Patient expectations are high. Great vision immediately after surgery is important. The enhanced monofocal Aspire IOL evaluated in the present study showed excellent 1-hour visual outcomes at distance and near. The author will discuss preoperative and intraoperative options to improve outcomes.
Presenting Author
Robert F. Melendez, MD, MBA, ABO
Co-Authors
Jonathan Davidorf MD, Satish Modi FRCS, MD, Michelle Vartanian OD, Zoe Baker OD, Ankita Kambli MSc
Purpose
This real-world, prospective, non-randomized, observational study compares the post-operative chair time required to manage cataract surgery patients (N=106) bilaterally implanted with either light-adjustable lenses (LAL/LAL+, RxSight) or Clareon/AcrySof PanOptix/Vivity presbyopia-correcting intraocular lenses (PC-IOLs, Alcon) at 3 US sites.
Methods
Patients scheduled to undergo bilateral cataract surgery were prospectively enrolled. The primary endpoint was mean total post-operative chair time (collected using a timer) from the day of first-eye implantation to 90 (�10) days post-second eye cataract surgery. Secondary endpoints are the number of post-operative visits at 90 (�10) and 180 (�10) days, and total chair time at 180 (�10) days post-second eye surgery. Study endpoints were compared between the two cohorts using the Wilcoxon Rank-Sum test.
Results
All three sites have completed enrollment. Data for the 90�10-day endpoints was analyzed for the full cohort of 31 LAL and 53 PC-IOL patients. At 90�10-days, the mean (standard deviation (SD)) of chair time (LAL: 158.7 (46.7) minutes vs. PC-IOL: 58.5 (34.5) minutes; p<0.001) and="" number="" of="" visits="" (lal:="" 7.8="" (1.6)="" vs.="" pc-iol:="" 4.5="" (1.1);=""><0.001) were="" significantly="" higher="" for="" lal="" compared="" with="">
Conclusion
This study suggests that patients who underwent LAL implantation may require higher post-operative resource use compared with PC-IOL, as observed by higher mean total post-operative chair time and number of post-operative visits. These findings provide insights that may help evaluate practice logistics and resource needs in advanced IOL offerings.
Presenting Author
Liam Redden, BSc, MD, COT
Co-Authors
David Hoang BSc, Nitin Rangu BA, David Murphy MD, Kai Ding PhD, Jascha Wendelstein MD, Kamran Riaz MD
Purpose
To compare clinical and refractive outcomes, as well as, return to operating room (ROR) rates of two IOL models used in intrascleral haptic fixation (ISHF-IOL) for correction of aphakia; CT Lucia 602 (Carl Zeiss Meditec) and Sensar AR40 (Johnson & Johnson Vision).
Methods
Single-site (tertiary care academic center), multi-surgeon retrospective case series of eyes undergoing ISHF-IOL for aphakia correction between 2019 and 2024. Comparative clinical and refractive outcomes were recorded, including corrected distance visual acuity (CDVA), spherical equivalent (SE), refractive cylinder (RefCyl), defocus equivalent (DEQ), cystoid macular edema (CME) rates, and return to the operating room (ROR) due to an IOL issue. Statistical analyses included descriptive statistics, Chi-Square tests, one-way ANOVA, and two-sample t-testing.
Results
There were 243 eyes analyzed for this study with 154 (63.37%) in the CT Lucia 602 group and 89 (36.62%) in the Sensar AR40 group. CT Lucia 602 and Sensar AR40 had similar SE and RefCyl (p = 0.18, p = 0.15). ROR was significantly higher with CT Lucia 602 compared to Sensar AR40 (p = 0.03). ROR in the CT Lucia group was due to IOL tilt and IOL dislocation. There were no significant IOL tilt or haptic-optic disinsertion in the Sensar AR40 group. CDVA was similar in eyes without significant comorbidities for both IOL models (p = 0.70).
Conclusion
In ISHF-IOL, Sensar AR40 has lower ROR rates compared to CT Lucia with similar CDVA outcomes.
Presenting Author
Karanpreet S Multani, BSc
Co-Authors
Jared Raabe MD, Liam Redden BSc, MD, Kamran Riaz MD, Kai Ding PhD
Purpose
To determine the causes and contributing factors for unhappiness with presbyopia-correcting intraocular lenses (IOLs) and to explore the results of IOL exchange in these patients.
Methods
Patients who underwent IOL exchange at the Dean McGee Eye Institute by a single surgeon due to unhappiness with their previous presbyopia-correcting IOLs from Jan. 2019 to Dec. 2023 were queried. Exclusion criteria included IOL exchange for IOL dislocation, patients requiring multiple IOL exchanges in a single eye, or lack of follow-up. Preoperative data regarding the patient�s complaint, IOL information, preoperative refractive error, angle alpha, angle kappa, and ocular comorbidities were obtained. Intraoperative data collected included type of fixation technique and concomitant vitrectomy. Postoperative data obtained included refractive error and patient satisfaction with intervention.
Results
43 patients were included in the study. Most commonly explanted IOL was the Panoptix (Alcon Labs, >50% of IOLs). Mean preoperative spherical equivalent (SE) was -0.2D. Most frequent ocular comorbidity was dry eye (16.3%). Average angle alpha was 0.5mm on both IOLMaster 700 (Zeiss) and Pentacam (Oculus). Average angle kappa was 0.2mm (Pentacam) and 0.4mm (IOLMaster 700). 21 patients had bag-to-bag IOL exchange, 15 had sulcus IOL placement. 6 had scleral fixated IOL placement. 22 patients required no vitrectomy, 18 required anterior vitrectomy, and 3 required pars plana vitrectomy. Mean post IOL-exchange SE was -0.7D overall in the study. 33 studied patients were satisfied post-IOL exchange.
Conclusion
Angle alpha appears to be a large contributing factor in patient candidacy for premium IOLs. In patients who are unhappy with their premium IOL, with minimal refractive error, IOL exchange is a good option. The majority of patients can have successful IOL exchange with good refractive outcomes and subjective satisfaction postoperatively.
Presenting Author
Sheetal Brar, MS
Purpose
To report the clinical outcomes and patient satisfaction following bilateral implantation of ISOPURE ( BVI Medical) enhanced monofocal IOL.
Methods
This prospective study included 60 eyes of 30 eligible patients who underwent bilateral phacoemulsification with implantation of the BVI ISOPURE enhanced monofocal IOL for age related cataract, with both eyes being targeted for emmetropia. Three months post-operatively, binocular visual outcomes for distance, intermediate and near vision along with subjective questionnaire for quality of vision and dysphotopsia symptoms was obtained.
Results
The mean age of the participants was 64�8.4 years. Three-month post-op, the mean values for binocular uncorrected distance VA (UDVA), intermediate VA (UIVA) at 66 cm, near VA (UNVA), corrected distance visual acuity (CDVA), distance corrected intermediate VA (DCIVA) and distance corrected near VA (DCNVA) were 0.05�0.07, 0.26�0.05, 0.37�0.07, 0.01�0.03, 0.24�0.05, and 0.35�0.06 respectively. Mean residual spherical equivalent was 0.07�0.23 D. Patients reported excellent satisfaction regarding performing far and intermediate distance activities and quality of their vision, without any significant complaints of positive dysphotopsias or reduction in contrast sensitivity.
Conclusion
Early experience suggests that the ISOPURE enhanced monofocal IOLs provide excellent distance and intermediate vision results at 66cm, without any compromise in visual quality due to significant dysphotopsias or reduced contrast sensitivity.
Presenting Author
Youngsub Eom, MD, PhD
Co-Authors
Jun Hun Lee MD, Dong Hyun Kim PhD, MD, Jong-Suk Song PhD, MD, David Cooke MD
Purpose
This study aims to evaluate how the distance from the optic's most-anterior surface to the principal object plane (POP) and from the front of the haptic to the principal object plane (H-POP) influences the calculation of intraocular lens (IOL) power.
Methods
This research includes both an optical simulation and a retrospective cross-sectional analysis. Using data from the ICB00 IOL configuration, the optical simulation mapped out variations in the POP and H-POP across different IOL powers. The clinical study analyzed 102 eyes from 102 patients who had received the ICB00 IOL implant. It focused on assessing the relationship between shifts in POP and H-POP distances and the prediction errors, calculated using the Barrett Universal II formula, across various IOL powers.
Results
Changes in the POP were slight, ranging from 0.21 mm to 0.30 mm, as IOL power varied. Meanwhile, H-POP values rose incrementally starting at 5.0 D, reaching a peak of 0.60 mm at 16.0 D, before declining to a low of 0.14 mm at 34.0 D. Analysis of prediction errors mainly reflected alterations in H-POP rather than POP with different IOL powers. A linear regression analysis indicated a significant trend towards myopic errors as IOL power exceeded 16.0 D (Y = �0.069X + 1.420, R� = 0.178, p < 0.001).
Conclusion
The results of this study suggest that H-POP measurements play a more critical role than POP in determining IOL power for the ICB00. To enhance the accuracy of IOL power calculations, it is crucial for manufacturers to offer detailed data on both the optic and haptic geometries, facilitating precise H-POP estimations.
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