AI Article Synopsis
- The study focuses on using Scheimpflug imaging with the Pentacam scanner to evaluate the anterior segment of the eye, which is crucial for diagnosing corneal diseases and assessing candidates for vision correction surgeries.
- Researchers conducted a retrospective review of corneal tomography images from 1,272 healthy young males to gather baseline data on key corneal measurements.
- The findings provide important normative values such as corneal curvature, thickness, and astigmatism, which can help inform future research and clinical practices, particularly in regions where conditions like Keratoconus are more common.
Article Abstract
Purpose: Anterior segment evaluation using Scheimpflug imaging with the Pentacam scanner allows the acquisition of a plethora of information. It aids in screening and diagnosing corneal pathologies and determining suitability for keratorefractive procedures. This research has significant benefits in terms of establishing normative tomographic values, which is crucial in countries where Keratoconus (KC) is more prevalent, especially among young age group, along with aiding future research in the field of refractive surgery by providing relevant normative data.
Methods: A retrospective review of digital corneal tomography images for a group of medically and ophthalmologically free males aged between 18 and 21 years with 20/20 unaided distant visual acuity was performed.
Results: A total of 1272 subjects (2544 eyes) were included. Findings revealed a mean maximal corneal curvature (Kmax) of 42.91 ± 1.40D (range 36.90-47.80D). The mean flat keratometry (K1) was 41.87 ± 1.31D (range 36.00-46.40D). The mean steep keratometry (K2) was 42.66 ± 1.35D (range 36.70-47.60D). The mean corneal astigmatism (CA) was 0.79 ± 0.37D (range 0.00D-2.30D). The mean central corneal thickness (CCT) was 558.53 ± 33.84 μm (range 421-677 μm). The mean thinnest corneal location thickness (TCLT) was 551.64 ± 34.08 μm (range 417-669μm). The mean corneal diameter (CD) and anterior chamber depth (ACD) were 12.13 ± 0.39 mm (range 10.50-13.60 mm) and 3.12 ± 0.29 mm (range 2.08-4.08 mm), respectively. The median differences between both eyes of the same subject were as follows: kmax difference of 0.20D (IQR 0.1-0.4); K1, K2 and CA difference of 0.20D (IQR 0.1-0.3) for all 3 parameters; CCT and TCLT difference of 5.00 μm (IQR 3.0-9.0) and 6.00 μm (IQR 3.0-10.0), respectively; CD difference of 0.10 mm (IQR 0.0-0.1); and ACD difference of 0.04 (IQR 0.02-0.06).
Conclusion: We believe our data can aid in establishing normative tomographic values and acceptable differences between both eyes. Our data may also help detect subtle corneal pathology and be useful for researchers and innovators in the field of ophthalmology.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9385131 | PMC |
| http://dx.doi.org/10.2147/OPTH.S376411 | DOI Listing |
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