ABSTRACT
Purpose: To assess the change in the amount of astigmatism caused by frown, straight, and smile incision in patients with pre?existing against?the?rule (ATR) astigmatism of more than and equal to 1 diopter Methods: This is a prospective, comparative study conducted over 18 months on 60 patients. Twenty patients were allocated to each incision using simple random sampling. Demographic details, best?corrected visual acuity (BCVA), intraocular pressure (IOP), anterior and posterior segment evaluation, and A?scan were done. An average of three measurements of K horizontal (Khavg), K vertical (Kvavg), and difference between the two (Khavg ? Kvavg) were taken using manual keratometry. All surgeries were performed by a single surgeon. All the data analyses were performed by using IBM Statistical Package for the Social Sciences (SPSS) version 20 software. Frequency distribution and cross tabulation were performed to prepare the tables. Results: In frown incision, Khavg ? Kvavg was significantly decreased on day 45 from the preoperative value (P < 0.001), followed by straight incision (P < 0.001), and smile incision (P < 0.001). Maximum decrease was observed in frown incision (49.15%) followed by straight (37.75%) and smile (28.57%) incisions. Conclusion: Our results are consistent with reduction of pre?existing ATR astigmatism with temporal incisions, and frown incision seems to be the best approach.
ABSTRACT
Nasolacrimal duct obstruction is common sequel following naso-orbito ethmoidal fractures. After 2 months of receiving conservative treatment, a 24-year-old male patient reported epiphora from the right eye following self-fall from a tree. Lacrimal sac mucocele was diagnosed and mucopurulent regurgitation noted on finger pressure and lacrimal sac syringing. Computed tomography revealed healed old fractures involving right nasal bone, maxillary nasal process adjacent to the medial orbital wall with lytic areas. Possibility of the subperiosteal abscess with osteomyelitis changes was suspected. A thick fibro-osseous (sequestrum) wall formation was noted separating nasal cavity and orbit. Lateral nasal wall adhesions were released by transnasal endoscopy. Two weeks later, the thick wall was fenestrated through external dacryocystorhinostomy approach. Lacrimal sac mucocele opened and bicanalicular silicone intubation performed. Epiphora relieved and lacrimal passage patency maintained and confirmed by lacrimal sac syringing on 3 months follow-up. To evaluate etiopathogenesis and patency, integrity of silicone intubation is the purpose of presenting this case.