Keratometry in Pediatric Eyes With Cataract

Abstract

To report the keratometry data of pediatric cataractous eyes (randomly selected single eye of bilateral cases; cataractous eye of unilateral cases) and to compare the keratometry data of the unilateral cataractous eye with the corresponding noncataractous fellow eye. Methods: Retrospective review of preoperative data of patients who had undergone cataract surgery before 18 years of age. Eyes with traumatic cataract or lens subluxation were excluded. Results: Of the 299 eyes analyzed in our study, the average (SD) keratometry value was 45.39 (3.08) diopters (D) (range, 39.25-63.5 D). Age and axial length (AL) demonstrated a significant linear relationship with values (P Ͻ .001, R 2 : logarithm of age, 0.31; axial length, 0.32). Keratometry values of younger children (aged 0-6 months) were significantly different from those of older children (PϽ.001). Girls had steeper corneas when compared with boys (P=.03). The values of eyes with cataract in monocular cases were steeper than that of bilateral cases (P=.07). For unilateral cataract, the eye with the cataract had a significantly steeper cornea than the fellow eye (P =.02). Conclusion: The keratometry values of younger children were steeper than that of older children. In eyes with unilateral cataract, values of cataractous eyes were steeper compared with their noncataractous fellow eye.

Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras

“…As visually impaired eyes tend to have greater axial growth (12) , the absence of differences between the AL value of healthy eyes and that of eyes in children with unilateral cataract might have resulted from later diagnosis and treatment in our sample, which could have resulted in worsened visual prognosis for these eyes (19) . Regarding gender, previous studies have reported steeper corneas and shorter AL in girls than in boys; however, these results were not observed in our sample (5,17) . To avoid the development of high myopia with axial growth, some authors recommend that after the calculation of the IOL for emmetropia, 20% of the IOL power should be subtracted in young children (<8 months of age), and 10% should be subtracted in children aged between 2 and 3 years (16) .…”

Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras

“…As visually impaired eyes tend to have greater axial growth (12) , the absence of differences between the AL value of healthy eyes and that of eyes in children with unilateral cataract might have resulted from later diagnosis and treatment in our sample, which could have resulted in worsened visual prognosis for these eyes (19) . Regarding gender, previous studies have reported steeper corneas and shorter AL in girls than in boys; however, these results were not observed in our sample (5,17) . To avoid the development of high myopia with axial growth, some authors recommend that after the calculation of the IOL for emmetropia, 20% of the IOL power should be subtracted in young children (<8 months of age), and 10% should be subtracted in children aged between 2 and 3 years (16) .…”

Unilateral Congenital Cataract: Clinical Profile and Presentation

“…An analysis of our data suggested that eyes with unilateral cataract have steeper corneas compared to the normal eye. This is in agreement with the study by Trivedi and Wilson, 5 in which they reported that eyes with cataract occurring unilaterally have steeper keratometric values compared to the normal eye. The study by Capozzi et al 6 also concurs with our findings, wherein they also observed steeper corneas in eyes with versus without cataract.…”

Preoperative Characteristics of Ocular Biometry in Children with Unilateral Congenital Cataracts

“…Our results suggested that eyes with unilateral congenital cataracts have shorter AL compared to the normal eye. Trivedi and Wilson (2008) reported similar findings to our study showing shorter AL in unilateral cataracts. However, Capozzi et al (2008) found no statistically significant differences between AL in eyes with and without cataracts.…”

Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras

“…As visually impaired eyes tend to have greater axial growth (12) , the absence of differences between the AL value of healthy eyes and that of eyes in children with unilateral cataract might have resulted from later diagnosis and treatment in our sample, which could have resulted in worsened visual prognosis for these eyes (19) . Regarding gender, previous studies have reported steeper corneas and shorter AL in girls than in boys; however, these results were not observed in our sample (5,17) . To avoid the development of high myopia with axial growth, some authors recommend that after the calculation of the IOL for emmetropia, 20% of the IOL power should be subtracted in young children (<8 months of age), and 10% should be subtracted in children aged between 2 and 3 years (16) .…”

Unilateral Congenital Cataract: Clinical Profile and Presentation

“…An analysis of our data suggested that eyes with unilateral cataract have steeper corneas compared to the normal eye. This is in agreement with the study by Trivedi and Wilson, 5 in which they reported that eyes with cataract occurring unilaterally have steeper keratometric values compared to the normal eye. The study by Capozzi et al 6 also concurs with our findings, wherein they also observed steeper corneas in eyes with versus without cataract.…”

Preoperative Characteristics of Ocular Biometry in Children with Unilateral Congenital Cataracts

“…Our results suggested that eyes with unilateral congenital cataracts have shorter AL compared to the normal eye. Trivedi and Wilson (2008) reported similar findings to our study showing shorter AL in unilateral cataracts. However, Capozzi et al (2008) found no statistically significant differences between AL in eyes with and without cataracts.…”

Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras

“…As visually impaired eyes tend to have greater axial growth (12) , the absence of differences between the AL value of healthy eyes and that of eyes in children with unilateral cataract might have resulted from later diagnosis and treatment in our sample, which could have resulted in worsened visual prognosis for these eyes (19) . Regarding gender, previous studies have reported steeper corneas and shorter AL in girls than in boys; however, these results were not observed in our sample (5,17) . To avoid the development of high myopia with axial growth, some authors recommend that after the calculation of the IOL for emmetropia, 20% of the IOL power should be subtracted in young children (<8 months of age), and 10% should be subtracted in children aged between 2 and 3 years (16) .…”

Unilateral Congenital Cataract: Clinical Profile and Presentation

“…An analysis of our data suggested that eyes with unilateral cataract have steeper corneas compared to the normal eye. This is in agreement with the study by Trivedi and Wilson, 5 in which they reported that eyes with cataract occurring unilaterally have steeper keratometric values compared to the normal eye. The study by Capozzi et al 6 also concurs with our findings, wherein they also observed steeper corneas in eyes with versus without cataract.…”

Preoperative Characteristics of Ocular Biometry in Children with Unilateral Congenital Cataracts

“…Our results suggested that eyes with unilateral congenital cataracts have shorter AL compared to the normal eye. Trivedi and Wilson (2008) reported similar findings to our study showing shorter AL in unilateral cataracts. However, Capozzi et al (2008) found no statistically significant differences between AL in eyes with and without cataracts.…”