الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
One of the most common causes of epiphora is canalicular blockage. It can either be inherited or acquired. Infectious and inflammatory eyelid illnesses, ocular surface disease, systemic or topical drugs, irradiation, iatrogenic, intrinsic canalicular tumours, and trauma can all cause canalicular blockage.
The optimal approach for a certain canalicular blokage, and hence its success in the long run, is determined by the location and severity of the blockage.
The treatment options are aiming to removal of obstruction to keep the patency of the lacrimal passges including canalicular trephination, membranectomy, ballon canaliculoplasty,endocanalicular laser surgery, conjuctivodacrocystorhinstomy and For patients with distal canalicular obstruction, a bicanalicular silicon stent can be inserted. There are numerous methods for bicanalicular silicone intubation.
Bicanalicular silicone intubation set were introduced for intubation of the upper and lower canaliculi then passing through the nasal passageway and operated under general anesthesia
Self -retaining bicanaliculs intubation setII (SRSII) allows upper and lower canaliculi intubation without entering through nasal passages as a minimally invasive, in-office treatment using topical anaesthetic.
It is a prospective, randomized, comparative, interventional case series study including fifty-sex patients (eighty eyes), twenty-four patients with bilateral canalicular obstruction and thirty-two with unilateral canalicular obstruction. Patients were randomly allocated in two groups. group A was treated by Autostable II (FCI)TM self-retaining stent (A-II SRS) and group B was treated by bicanalicular silicon tube (EAGLE LABS)TM (BST). Patients were sourced from Minia University Hospital’s outpatient clinic.
External examinations, slit lamp examinations, diagnostic probing and lacrimal irrigation to determine the state of the lacrimal passages and the extent of canalicular obstruction, and nasal examinations were also conducted on all patients to rule out other causes of epiphora.
Data was collected, edited, validated, and coded before being transferred to a computer for statistical analysis using SPSS version 20.
The study had achieved a reasonable success in improvement of epiphora in 90% in patients that treated with Autostable II (FCI)TM self-retaining stent (A-II SRS) after removal at 3 months postoperatively and follow up after 6 months and in (85%) in patients that treated with bicanalicular silicon tube (EAGLE LABS)TM (BST) after follow up 6 months.
Few Complications occurred in group (A) that treated with autostable self-retaining stent such as conjunctivitis, and buildup of mucoid debris on the stent occurred in 2 eyes (5%) that cured with topical antibiotic treatment without stent removal. But in group (B) that treated with bicanalicular silicone tube early conjunctivitis, buildup of mucoid debris on the tube that cured with topical antibiotic treatment without tube removal occurred in 4 eyes (10%) and minimal nasal bleeding were noticed in 3 eyes (7.5%) during follow up.
The current study confirms that autostable self-retaining stent is a minimally invasive approach and respect the lacrimal drainage system’s anatomyo the more invasive bicanalicular silicone intubation in the managementof distal canalicular obstruction.