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Influences of cyclopentolate hydrochloride on anterior segment parameters with Pentacam in children
Melis Palamar1, Sait Egrilmez, Onder Uretmen
1Faculty of Medicine, Department of Ophthalmology, Ege University, Izmir, Turkey. melispalamar@hotmail.com
Insights
Cyclopentolate hydrochloride 1% eye drops significantly decrease central corneal thickness and increase anterior chamber depth and volume in children. These changes, measured by Pentacam, are important for clinical interpretation.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Ocular Biometry
Background:
- Accurate anterior segment measurements are crucial for pediatric eye care.
- Cycloplegic agents can influence ocular biometric parameters.
- Understanding these effects is essential for reliable clinical assessments.
Purpose of the Study:
- To evaluate the impact of cyclopentolate hydrochloride 1% on key anterior segment parameters in children.
- To compare changes in ocular measurements before and after cycloplegia using Pentacam imaging.
- To assess the reliability of Pentacam measurements in cyclopleged pediatric eyes.
Main Methods:
- A prospective study involving 50 children receiving cyclopentolate hydrochloride 1% and a control group of 31 children.
- Pentacam rotating Scheimpflug camera was used to measure anterior chamber depth (ACD), anterior chamber volume (ACV), and central corneal thickness (CCT).
- Statistical analysis included paired and unpaired t-tests to compare measurements within and between groups.
Main Results:
- Cyclopentolate hydrochloride 1% significantly decreased central corneal thickness (CCT).
- Significant increases were observed in anterior chamber depth (ACD) and anterior chamber volume (ACV) post-instillation.
- No significant changes in these parameters were noted in the control group over equivalent time intervals.
Conclusions:
- Cyclopentolate hydrochloride 1% significantly alters CCT, ACD, and ACV in pediatric eyes.
- These cycloplegia-induced biometric changes necessitate consideration during Pentacam-based clinical interpretations in children.
- Ophthalmologists should account for these refractive parameter shifts for accurate pediatric eye evaluations.
Purpose:
To investigate the effects of cyclopentolate hydrochloride 1% on the main numerical parameters of anterior segment with Pentacam rotating Scheimpflug camera in children.
Setting:
Ege University Faculty of Medicine, Department of Ophthalmology.
Methods:
Pentacam measurements of 50 (23 boys and 27 girls) children before and after 45 min of cyclopentolate hydrochloride 1% instillation were performed and compared with 31 (17 boys and 14 girls) no medication instilled control group. Measurements of the control group (cycloplegia-free) were taken at two separate sessions with 45-min intervals. For comparison of the test parameters, paired t-test in the groups and unpaired t-test in between the groups were used.
Results:
Mean ages in the study and control groups were 10.06 ± 2.87 (range 6 and 16 years) and 9.87 ± 2.72 (range 6 and 16 years), respectively, and the difference was statistically insignificant (p > 0.05). In the study group, measurements between two sessions were significantly different for the parameters of anterior chamber depth (ACD), anterior chamber volume (ACV) and central corneal thickness (CCT) (p < 0.05), whereas none of the parameters was different between two sessions for control group.
Conclusions:
Cyclopentolate hydrochloride 1% instillation leads to significant decrement in CCT. ACD and ACV are the other important refractive parameters that increase significantly after cycloplegia. Effects of cycloplegia on these parameters for Pentacam measurements should be regarded for proper clinical interpretation in children.
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