During the examination of the student, the doctor found dryness and keratinization of the skin on the elbows and knees. On the skin of the buttocks, thighs and calf keratinization of the epithelium, if held by hand, there is a roughness of the skin of these areas, which resembled "goosebumps". Student also complained of impaired vision at dusk. Which of the following diseases is possible to assume?