[Evaluation of quality of vision in early stage after sub-bowman keratomileusis].

Objective: To assess the quality of vision in the early stage after sub-bowman keratomileusis (SBK) for the correction of moderate and high myopia.

Methods: Retrospective case series. Sixty eight myopic eyes of 35 consecutive patients in Chongqing Medal Eye Institute from May to November 2011 were enrolled in this study.

[The early post-operative wound healing mode study of the rabbit cornea after flap-free epiploic laser in-situ keratomileusis].

Objective: To evaluate the wound healing mode of rabbit corneal epithelium after Epi-LASIK(epiplolic laser in-situ keratomileusis) and Flap-free Epi-LASIK(Flap-free epiploic laser in-situ keratomileusis).

Methods: Twenty-four New Zealand white rabbits (48 eyes) were randomly divided into four groups. There were six rabbits in every group, which were randomly treated with Epi-LASIK in one eye and Flap-free Epi-LASIK in the other by VISX20/20 excimer laser.

[The structure and viability analysis of corneal epithelial flap in the rabbit cornea after Epi-LASIK].

Objective: To evaluate the changes of ultrastructure and viability in the rabbit corneal epithelial flap after Epi-LASIK (epiploic laser in-situ keratomileusis) surgery and its effect on keratocyte apoptosis and proliferation of peripheral corneal epithelium (out of corneal epithelial flap).

Methods: Fifty-eighty eyes of 29 New Zealand rabbits were used, Epi-LASIK was performed in 28 eyes and Photorefractive keratectomy (PRK) was carried out in 24 eyes. treated-eyes were randomly divided into four groups and were sacrificed at 1, 3, 5, 7 days after surgery, six eyes without treatment were served as blank controls.

[An analysis about the safe range of thickness of the residual corneal stroma bed after LASIK].

Objective: To ascertain the safe range of thickness of the residual corneal stroma bed and the length of stable time after LASIK operation.

Methods: Two hundred and twenty seven eyes were randomly selected from cases treated with LASIK in 2000. The posterior curvature of cornea was measured by Obscan II preoperatively and 1, 2, 3, 6 months, 1 year and 2 year postoperatively.

[An analysis of measurement error in Orbscan topography system].

Objective: To discuss the measurement error and the influence factor of Orbscan Topography to provide more accurate data for clinical application.

Methods: Orbscan Topography System and A-scan ultrasonography were used to measure the corneal thickness and anterior chamber depths pre-operatively and post-operatively, including 200 cases (400 eyes) undergoing laser in situ keratomileusis (Lasik) and 50 cases (100 eyes) undergoing photorefractive keratectomy (PRK). The curvature of posterior corneal surface was measured by Orbscan topography before and after the operations, and the result of measurement was compared.