Normal eyelashes grow in the front of the eyelid eyelid

Normal eyelashes grow in the front of the eyelid eyelid, from the surface ectoderm epithelium developed, arranged in 2 to 3 rows, was short and curved coarse hair. Eyelashes are dark, blocking dust, to prevent foreign body into the eyes and the role of eye beauty, slender, black, upturned eyelashes on the appearance of the United States played an important role in the modification. The number of eyelashes eyelashes more, there are 100 to 150, the average length of 8 to 12 mm, the upper eyelid eyelashes open eyes when the angle of 110 ゜ ~ 130 ゜, eyes closed when the 140 ゜ ~ 160 ゜;

Eyelid eyelashes have 50 to 80, the average length of about 6 to 8 mm, lower eyelid eyelashes when the eyes open when the 100 ~ 120 ゜. Eyelashes hair root deep living in connective tissue and muscle, where there are abnormal sweat glands and sebaceous glands, the catheter openings in the eyelash. Eyelid eyelid lips are arranged in a number of small holes arranged in a row, these holes are the meibomian gland duct opening, tarsal gland itself is located in the tarsus. Eyelash tilt angle of the abnormal, can be due to eyelash growth angle changes or eyelid disease caused.

Trichiasis for many reasons, children and adolescents are mainly due to abnormal growth direction of eyelashes, lower eyelid skin, sometimes lower eyelid skin combined with epicanthus, and congenital eyelid varus caused. In the elderly mainly by the eyelid conjunctival inflammation and eyelid scar scar contraction caused by, and a variety of causes caused by eyelid varus. There are two main causes of trichiasis, including triceps without eyelid varus and triceps with eyelid varus. Eyelid varus can be caused by trichiasis, but the inverted eyelashes are not necessarily accompanied by eyelid varus, trichiasis can exist alone. Eyelid varus is the eyelid margin to the direction of the eye within the volume of the abnormal state.lumigan eye drop  this medication may slowly (over months to years) cause brown discoloration of the colored portion of the eye (iris). If you are using lumigan for eyelash in only one eye, only that iris may change color. An increase in eyelash number/length/thickness, darkening of the eyelashes/eyelids, or eyelid changes may also occur in the treated eye.