AIM To evaluate the visual outcome of all patients who had cataract surgery with intraocular lens implant in five Local Government Areas (LGAs) of Kaduna State and to identify reasons for poor outcome and to proffer suggestions to improve outcome. MATERIALS AND METHODS A prospective study using the WHO cataract surgery record form to collect data from consecutively screened and operated catar...

Since the revolutionary incorporation of the excimer laser in corneal refractive surgery back in 1980s, the understanding of both corneal biomechanics and the qualitative and quantitative evaluation of the eye as an optical system, have become and obsession for both ophthalmologists and optometrists as well as for other related scientists. In fact, the closed interaction between these groups of...

Worldwide, and especially in Asia, myopia is a major vision-threatening disorder. From AD 1600 on, to prevent myopia, authors warned against near work without sufficient pauses. There was an abundance of theories about the causes of myopia, the most common one being the necessity of extra convergence on nearby work with thickened extraocular muscles and elevated intraocular pressure. Ocular ten...

PURPOSE To evaluate the effect of phacoemulsification through clear cornea incision in the steepest meridian (ISM), on the magnitude of preoperative keratometric astigmatism. To map the magnitude of surgically induced astigmatism (SIA) by clear cornea incision in the positions: nasal (N), temporal (T), superior temporal (ST) and inferior temporal (IT). METHODS A prospective keratometric study...

PURPOSE To determine the long-term safety and effectiveness of laser in-situ keratomileusis (LASIK) in the treatment of refractive errors following penetrating keratoplasty (PK). METHODS A retrospective review was performed of 57 eyes of 48 patients with anisometropia or high astigmatism who were unable to wear glasses or a contact lens after PK and who underwent LASIK for visual rehabilitati...

The purpose of the study was to evaluate occurrence and range refractive errors in dogs different ages. A total 99 clinically healthy, mixed-breed mesocephalic were included divided into three age groups according current human/pet analogy chart: 40 adults (23 males, 17 females, 1–8 years old, 3–70 kg), 21 seniors (14 7 6–11 7–42 38 geriatrics (22 males, 16 8–13 5–45 kg). A...

After penetrating keratoplasty (PK), high astigmatism is often induced, being frequently about 4-6 dpt. According to the entity and typology of astigmatism, different methods of correction can be used. Selective suture removal, relaxing incisions, wedge resections, compression sutures, photorefractive keratectomy, and laser-assisted in situ keratomileusis can reduce corneal astigmatism and amet...

Purpose: To describe the prevalence of hyperopia and associated factors in a representative sam Australian schoolchildren 6 and 12 years old. Design: Population-based cross-sectional study. Participants: Schoolchildren ages 6 (n 1765) and 12 (n 2353) from 55 randomly selected schools acr Sydney. Methods: Detailed eye examinations included cycloplegic autorefraction, ocular biometry, cover testi...

PURPOSE To prospectively evaluate safety, efficacy, predictability, stability, complications, and patient satisfaction after refractive lens exchange (clear lens extraction) followed by posterior chamber implantation of a multifocal intraocular lens (IOL). METHODS Fifty eyes of 25 patients (mean age 51 years, range 44 to 62 years) with preoperative spherical equivalent refraction between -15....

PURPOSE To describe the prevalence of hyperopia and associated factors in a representative sample of Australian schoolchildren 6 and 12 years old. DESIGN Population-based cross-sectional study. PARTICIPANTS Schoolchildren ages 6 (n = 1765) and 12 (n = 2353) from 55 randomly selected schools across Sydney. METHODS Detailed eye examinations included cycloplegic autorefraction, ocular biomet...