Structural and Functional Assessment in Patients Treated with Systemic Isotretinoin Using Optical Coherence Tomography and Frequency-Doubling Technology Perimetry.
A causal association between central nervous system neuropathy and oral isotretinoin has been reported. In this study we aimed to assess retinal nerve fibre layer (RNFL) thickness and visual field changes in patients treated with systemic isotretinoin. Thirty-nine patients treated with 1 mg/kg daily oral isotretinoin were enrolled in this prospective clinical trial. All patients underwent complete ophthalmologic assessment before treatment, on day 60, and 3 months after completion of treatment. RNFL thickness measurements were performed with Stratus optical coherence tomography. Functional testing included frequency-doubling technology perimetry and Humphrey field analyser. Main outcome measures were average RNFL thicknesses and visual field indices (mean deviation, pattern standard deviation). Measurements of RNFL thickness showed no statistically significant change between the three measurements (p= 0.180). No statistically significant differences were observed in the frequency-doubling technology indices (mean deviation and pattern standard deviation,p= 0.066 andp= 0.103, respectively) and in the Humphrey field analyser indices (mean deviation and pattern standard deviation,p= 0.091 andp= 0.087, respectively) at day 60 of treatment or 3 months after the cessation of treatment. In this study of 39 patients, systemic use of isotretinoin (1 mg/kg daily) does not cause a statistically significant change in peripapillary RNFL thickness or visual field findings within the usage period, and within 3 months after cessation.
Department of Ophthalmology.
Berker
B
Bakbak
Department of Ophthalmology.
Sansal
S
Gedik
Department of Ophthalmology.
Bengu Ekinci
BE
Koktekir
Department of Ophthalmology.
Huseyin
H
Guzel
Department of Dermatology, Selcuk University Medical Faculty Konya Turkey.
Hilmi Cevdet
HC
Altınyazar
Adverse effect; frequency-doubling technology; isotretinoin; optic nerve; visual field