An interventional study of congenital/pediatric cataract surgery and Non-Toric IOLs in Cataract Congenital, Astigmatism and IOL, sponsored by Kazakh Eye Research Institute. Completed at 2 sites in Kazakhstan. Open to participants aged 6 Years to 18 Years. Per ClinicalTrials.gov, last updated 2026-10-16.
Sponsored by Kazakh Eye Research Institute · Not applicable, Interventional, and Treatment
To evaluate the visual and refractive outcomes after an intraocular lens (IOL) implantation in pediatric eyes with cataract and preexisting corneal astigmatism
This single-center, single-blinded, prospective, randomized controlled trial was performed at two sites of Kazakh Eye Research Institute.
Children with pediatric cataract and corneal astigmatism were included and randomized to two groups for pediatric cataract surgery with toric and non-toric intraocular lens (IOL) implantation. The uncorrected and corrected distance visual acuity, near visual acuity, keratometry data, and residual astigmatism were evaluated.
The purpose of this study is to evaluate the visual and refractive outcomes after a toric IOL implantation in pediatric eyes with cataract and preexisting corneal astigmatism.
417 studies on the registry are indexed under Astigmatism; 50 are open to participants now.
This study's enrollment of 40 is below the median of 55 across 325 interventional studies indexed under Astigmatism.
Browse Astigmatism studies →Kazakh Eye Research Institute is the lead sponsor of 7 studies on the registry; 1 is open to participants now.
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Exclusion criteria:
A folding hydrophobic acrylic IOLs AcrySof IQ Toric SN6ATx and Clareon Toric CNW0Tx
Procedure: congenital/pediatric cataract surgery · Device: Toric IOLs
A folding hydrophobic acrylic intraocular lens (IOL) AcrySof IQ SN60WF and Clareon SY60WF
Procedure: congenital/pediatric cataract surgery · Device: Non-Toric IOLs
All procedures are performed under general anesthesia according to the standard technique of congenital/pediatric cataract surgery with an intraocular lens (IOL) implantation. Paracentesis is performed at 2.30 o\'clock using a 20-gauge straight microvitreoretinal (MVR) knife; a high molecular weight ophthalmic viscosurgical devices (OVD) is injected into the anterior chamber. Then a 2.4 mm corneal tunnel incision is made at 11 o'clock with a disposable keratome knife 2.2 mm. Circular continuous capsulorhexis (≈ 5.5 mm). Сortical cleaving hydrodissection is followed by bimanual phacoaspiration in irrigation-aspiration mode. OVD is injected in the anterior chamber and an IOL is implanted in the capsular bag. Residual OVD is aspirated from the anterior chamber and behind the IOL and followed by IOL alignment. The surgery is completed with corneal hydration at the tunnel incision site.
Also known as: phacoaspiration
A folding hydrophobic acrylic IOLs AcrySof IQ SN60WF and Clareon SY60WF for the non-toric group (Alcon Laboratories, Inc.) ARE implanted.
Also known as: Models SN60WF and SY60WF
A folding hydrophobic acrylic IOLs AcrySof IQ Toric SN6ATx and Clareon Toric CNW0Tx for the toric group (Alcon Laboratories, Inc.) were implanted.
Also known as: Models CNW0T3, CNW0T4, CNW0T5, CNW0T6, CNW0T7, CNW0T8 and SN6AT3, SN6AT4, SN6AT5, SN6AT6, SN6AT7, SN6AT8
Uncorrected (UCDVA) and corrected (CDVA) distance visual acuity
measured using the Lea symbol visual acuity chart or the Early Treatment of Diabetic Retinopathy Study (ETDRS) chart according to the patient\'s age
Time frame: recorded at each follow-up (on the fifth day, first month, third month, sixth month, and first year)
Uncorrected (UCNVA) and corrected (CNVA) near visual acuity
measured using the Lea symbol visual acuity chart or the ETDRS chart for near according to the patient\'s age
Time frame: recorded at each follow-up (on the fifth day, first month, third month, sixth month, and first year)
Refraction measurements
obtained with KR-1W Wavefront Analyzer
Time frame: recorded at each follow-up (on the fifth day, first month, third month, sixth month, and first year)
Keratometry measurements
obtained with KR-1W Wavefront Analyzer
Time frame: recorded at each follow-up (on the fifth day, first month, third month, sixth month, and first year)
Plan to share: Undecided
No publications or documents are linked to this record.
Ran from Mar 2024 to primary completion in Feb 2025, 11 months.
Of 77 non-industry interventional studies with no phase under Astigmatism, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 48. This study's 11 months is below that.
Counting every sponsor, half of 183 studies reached it within 12 months; a quarter within 4 and three quarters within 26.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Kazakh Eye Research Institute