Corneal densitometry in patients with severe delayed-onset mustard gas keratopathy versus patients suffered from chronic corneal scarring
Background and Aim: Purpose: This study was performed to evaluate the corneal densitometric values extracted from Pentacam HR in two groups of delayed-onset mustard gas keratopathy(DMGK) and chronic herpes simplex corneal scarring.
Methods: Methods: This study included two groups, and each of them contained twenty eyes. All participants were examined using the Pentacam HR. Corneal densitometry was measured over a 12-mm diameter area, divided by annular concentric regions and depths. total corneal densitometry in the anterior, central and posterior layers and 0 - 2mm, 2 - 6 mm, 6 -10 mm and 10 - 12 mm annulus were extracted. Also the mean total densitometry of the cornea was evaluated.
Results: Results: the mean age of each patient in the DMGK and chronic corneal scarring group was 53.25 ± 5.95, 54.40 ± 17.20 years, respectively. Densitometry measurement in 10 to 12 mm in diameter in DMGK was significantly higher than chronic corneal scarring (DMGK=44.62±11.62, chronic corneal scarring=27.46±10.76, p=0.004). The mean value on the total corneal densitometry in severe DMGK group was more than the chronic corneal scarring (32.5±5.61, 28.01±8.15, respectively). There were not any significant differences in other densitometry values between the groups
Conclusion: Conclusion: because corneal densitometry is a parameter for the evaluation of corneal haze, our study showed that corneal opacity in the studied chemically injured group is probably higher than the other group and the peripheral ring of the cornea in patients with DMGK is more opaque.
Shiva Bagheri1 *, khosrow jadidi2 , Mohammad Aghazadeh Amiri1