Journal of American Association for Pediatric Ophthalmology and Strabismus 05/2006; 10(2):182-3. · 0.73 Impact Factor
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ABSTRACT: We sought to report the incidence of glaucoma in the eyes of children who underwent cataract surgery with and without intraocular lens implantation and to report the risk factors for developing glaucoma.
We undertook a retrospective review of pediatric cataract surgery charts, excluding traumatic cataract, aniridia and Lowe syndrome, steroid-induced cataract, lens subluxation, uveitis, retinoblastoma, radiation-induced cataract, retinopathy of prematurity, secondary IOL implantation, and patients with less than 1 month of postoperative follow-up.
After pediatric cataract surgery, 10 (3.8%) of 266 eyes with primary intraocular lens implantation were diagnosed with glaucoma, whereas 8 (17.0%) of 47 aphakic eyes were diagnosed with glaucoma. During the initial analyses, we noted that all of the patients who developed glaucoma underwent cataract surgery when they were 4.5 months or younger. For all patients who underwent surgery during the first 4.5 months of their life, the glaucoma incidence was 24.4% (10/41) in children with pseudophakic eyes and 19.0% (8/42) in age-matched children with aphakic eyes (risk ratio=1.1, CI=0.7-1.9; P=.555). In patients who underwent surgery during the first 4.5 months of their life, the average age of the patients who developed glaucoma was not significantly different than those who did not develop glaucoma in pseudophakic eyes (2.0 months+/-1.4 vs. 1.9 months+/-1.0, P=.700) or aphakic eyes (2.6 months+/-1.5 vs. 1.4 months+/-0.9, P=.070). The corneal diameter of the eyes that developed glaucoma versus eyes that did not was not significantly different in patients with pseudophakic eyes (P=.860) or aphakic eyes (P=.254). Glaucoma was diagnosed in patients at an average of 8.6 months and 117.9 months after cataract surgery in those with pseudophakic eyes and aphakic eyes, respectively.
Patients undergoing cataract surgery at an early age are at high risk for the development of glaucoma with or without an intraocular lens implant.
Journal of American Association for Pediatric Ophthalmology and Strabismus 05/2006; 10(2):117-23. · 0.73 Impact Factor
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ABSTRACT: We sought to evaluate the accuracy of intraocular lens calculations in children undergoing cataract extraction with intraocular lens (IOL) implantation.
This was a retrospective review of 101 consecutive cases of pediatric cataract extraction with posterior chamber IOL. Median age at the time of surgery was 4.8 years, and 23 of the children were younger than 2 years of age. Initial IOL calculations were made using either the SRK II or SRK T formulas. Preoperative predictive data were compared with the refractive result obtained at the 2-month postoperative visit. Prediction error was calculated for each patient, and lens calculation errors were back-calculated for each of 4 commonly used IOL calculation formulas, including the SRK II, SRK T, Holladay I, and Hoffer Q.
The mean prediction error for all patients was 0.30 D. Despite this level of overall accuracy, significant variability did occur with outcomes ranging from -4.06 D to + 3.86 D of the desired spherical equivalent. Mean absolute prediction error was 1.16 D with no significant difference between the SRK II and SRK T formulas. Lens calculation errors predicted by each of the 4 formulas studied demonstrated a high degree of variability with the SRK II being the least variable and the Hoffer Q being the most variable, particularly among the youngest group of children with the axial lengths less than 19 mm.
The accuracy of commonly used IOL calculation formulas is generally reasonable but highly variable within the pediatric population, Newer theoretic IOL calculation formulas did not outperform older regression models.
Journal of American Association for Pediatric Ophthalmology and Strabismus 05/2005; 9(2):160-5. · 0.73 Impact Factor