Evaluation of corneal biomechanical parameters after simultaneous phacoemulsification with intraocular lens implantation and limbal relaxing incisions.

Purpose: To determine whether alterations in architecture cause corneal biomechanical changes after simultaneous cataract surgery and limbal relaxing incisions (LRIs).

Setting: Department of Ophthalmology, Kitasato University, Kanagawa, Japan.

Design: Observational case series.

Modulation transfer function of intraocular collamer lens with a central artificial hole.

Background: A modified implantable collamer lens (ICL) with a central hole (diameter 0.36 mm), "Hole-ICL", was created to improve aqueous humour circulation. The aim of this study is to investigate the effects of ICL power and the relationship between pupil size and modulation-transfer functions (MTFs) in a Hole-ICL in vitro.

Time course of corneal biomechanical parameters after phacoemulsification with intraocular lens implantation.

Purpose: To assess the time course of corneal biomechanical parameters after phacoemulsification with intraocular lens implantation.

Methods: We examined 54 eyes of 33 consecutive patients undergoing cataract surgery. We quantitatively assessed the values of corneal biomechanics characterized by corneal hysteresis (CH) and corneal resistance factor (CRF) using an Ocular Response Analyzer before and 1 day, 1 week, 1 month, and 3 months after surgery.

Effect of aging on corneal biomechanical parameters using the ocular response analyzer.

Purpose: To assess the effect of aging on corneal biomechanical parameters in a normal population.

Methods: We prospectively examined 204 normal eyes of 204 healthy Japanese volunteers (68 men, 136 women; mean age 46.7+/-19.

Time course of corneal biomechanical parameters after laser in situ keratomileusis.

Purpose: To assess the time course of corneal biomechanics after laser in situ keratomileusis (LASIK).

Methods: We examined 36 eyes of 20 consecutive patients undergoing LASIK for low to moderate myopia. We quantitatively assessed the values of corneal biomechanics characterized by corneal hysteresis (CH) and corneal resistance factor (CRF) using an Ocular Response Analyzer (Reichert Ophthalmic Instruments) before and 1 week, 1, 3, and 6 months after surgery.

Comparison of the changes in corneal biomechanical properties after photorefractive keratectomy and laser in situ keratomileusis.

Purpose: To compare the postoperative biomechanical properties of the cornea after photorefractive keratectomy (PRK) and after laser in situ keratomileusis (LASIK) in eyes with myopia.

Methods: We retrospectively examined 27 eyes of 16 patients undergoing PRK and 31 eyes of 16 patients undergoing LASIK for the correction of myopia. Corneal hysteresis (CH) and corneal resistance factor (CRF) were measured with Ocular Response Analyzer before and 3 months after surgery.