Prof. Leonardo Mastropasqua is Director at the National High-Tech Eye Center, Ophthalmology Clinic, Department of Medicine and Aging Science, University G. D’Annunzio Chieti-Pescara, Chieti, Italy. In following editorial, talk about prospects for corneal lenticule implantation. Mario Nubile Associate Professor same faculty. Both are specialized in corneal, cataract refractive surgery focus on i...

OBJECTIVE To evaluate the effects of the intrastromal corneal ring, a device developed to reduce myopia, on corneal asphericity in a large set of eye bank eyes. METHODS Forty-one deturgesced eye bank eyes were implanted with intrastromal corneal rings of five different thicknesses, ranging from 0.25 mm to 0.45 mm. Corneal asphericity, before and after implantation, was examined using two diff...

purpose: to evaluate changes in indications of corneal transplantation at labbafinejad medical center during 2001-2003. methods: records of 563 from 684 patients who had undergone corneal transplantation from oct. 2001 to oct. 2003 were evaluated. all the procedures were performed by corneal surgeons and fellows. findings: there were 292 male (51.9%) and 217 female (48.1%) subjects ranging in a...

PURPOSE To determine the contribution of posterior corneal astigmatism to total corneal astigmatism and the error in estimating total corneal astigmatism from anterior corneal measurements only using a dual-Scheimpflug analyzer. SETTING Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA. DESIGN Case series. METHODS Total corneal astigmatism was calculated using ray trac...

purpose: to investigate the biomechanical features of transplanted corneas after penetrating keratoplasty (pk), deep anterior lamellar keratoplasty (dalk), and descemet stripping automated endothelial keratoplasty (dsaek) and compare these measurements with those of a normal group. methods: forty-five eyes of 36 patients underwent pk, 23 eyes of 21 patients received dalk using anwar’s big bubbl...

PURPOSE To analyze corneal curvature and visual acuity after asymmetric intrastromal corneal rings implantation, not following the nomogram proposed by the manufacturer. METHODS Seven eyes of seven keratoconus patients which had asymmetric corneal rings implanted in their corneal stroma were studied. RESULTS A flattening of the average corneal keratometry was noted in all patients, as well ...

Corneal endothelium is a single layer of specialized cells that lines the posterior surface of cornea and maintains corneal hydration and corneal transparency essential for vision. Currently, transplantation is the only therapeutic option for diseases affecting the corneal endothelium. Transplantation of corneal endothelium, called endothelial keratoplasty, is widely used for corneal endothelia...

In the optical system of the human eye, total refractive power consists mainly of corneal and lenticular components. Approximately two-thirds of the eye's converging power is at the air–cornea (tear film) interface; one-third is in the lens. Total corneal power is determined by corneal anterior and posterior curvature, corneal thickness, and the corneal refractive indices. Traditionally, anteri...

comparing the preventive effect of adhesive tape and eye ointment on eye dryness and corneal abrasion in icu patients     sharifi tabar z [1] , shaeri m [2] , nazari r [3] , adib hajbagari m [4] , masoudi alvi n [5]     received: 29 feb , 2012 accepted: 04 jun , 2012     abstract   background & aims : eye complications are common in intensive care units’ patients. different methods are recommen...

Corneal hysteresis (CH) is a parameter which measures the viscoelastic behaviour of the cornea, indicating its biomechanical integrity1. Some clinical conditions such as keratoconus, Fuchs corneal dystrophy, high myopia, glaucoma and corneal refractive surgery, may induce changes in corneal biomechanical properties, leading to a decrease in CH2-6. Astigmatism, a refractive error related to corn...