In the title compound, C(15)H(15)NO(3)S, the conformation of the N-H bond in the C-SO(2)-NH-C(O) segment is anti to the C=O bond. Further, the conformation of the C=O bond is syn to the ortho-methyl group in the benzoyl ring. The dihedral angle between the sulfonyl benzene ring and the -SO(2)-NH-C-O segment is 87.1 (1)° and that between the sulfonyl and the benzoyl benzene rings is 58.2 (1)°. I...

In the title compound, C(13)H(11)Cl(2)NO(2)S, the conformation of the N-H bond in the C-SO(2)-NH-C segment is anti to the meta-Cl atom on the aniline ring and syn to the ortho-methyl group on the sulfonyl-benzene ring. Furthermore, the torsion angle of the C-SO(2)-NH-C segment in the mol-ecule is 80.1 (3)°. The two benzene rings are tilted relative to each other by 70.9 (1)°. In the crystal, pa...

PURPOSE To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct ectasia in eyes with prior refractive surgery. METHODS Forty-one eyes of 25 patients (13 men, 12 women; mean age, 28.66 years) with ectasia after refractive surgery [photorefractive keratectomy (PRK) or laser in situ keratomileusis (LASIK)] were included in a nonrandomized, retrospect...

PURPOSE To determine the main causes of intrastromal corneal ring segment (ICRS) explantation and the relationship with the microscopic findings on the ICRS surface. SETTING Vissum Corporation-Instituto Oftalmológico de Alicante, Alicante, Spain. METHODS This study evaluated ICRS that were explanted in centers in Spain from 2000 to 2008. Clinical data (reasons for explantation, date of impl...

PURPOSE To evaluate the safety and efficacy of intrastromal corneal ring segment implantation using both mechanical and femtosecond-assisted tunnel creation for the treatment of patients with keratoconus. METHODS A retrospective noncomparative interventional study including 96 eyes of 75 patients with keratoconus. All patients had contact lens intolerance and clear central corneas. Corneal tu...

15 years old male reported with diminution of vision in the left eye of three months duration. He had a cystic lesion in the inferonasal area of the cornea straddling the limbus, partially on the cornea and partially on the sclera. Surgical excision of the lesion revealed it to be a continuous intrascleral and intracorneal cyst. Histopathology confirmed it to be a calcified cysticercosis.

BACKGROUND Intracorneal epithelial cysts are a rare clinical condition that can occur anywhere in the corneal tissue; however, they appear most commonly in the stroma. They are sometimes challenging to treat because of their location, depth, and visual outcomes. Herein, we report a pre-Descemet epithelial cyst that was successfully treated surgically, with guidance from Fourier-domain optical c...

We study the spherical droplet problem in 3D Landau–de Gennes theory with finite temperature. By rigorously constructing biaxial–ring solutions and split–core–segment solutions, we theoretically confirm numerical results of Gartland–Mkaddem [15]. The structures disclinations are also addressed.