PurposeTo compare chronic subclinical inflammation induced after implantation of Artisan vs. Artiflex phakic intraocular lenses (pIOLs).MethodsThis prospective, comparative, non-randomized study included consecutive patients with moderate to high myopia who underwent Artisan or Artiflex pIOL implantation with standard surgery and postoperative care. Anterior chamber flare was assessed quantitatively using laser flare photometry (LFP) at baseline, 1 week, 1 month, 3 months, 6 months, and 2 years after surgery.ResultsPIOLs were implanted in 72 eyes (40 patients); Artisan pIOLs in 16 eyes (Artisan group) and Artiflex pIOLs in 56 eyes (Artiflex group). The mean preoperative anterior chamber flare was 6.5 ± 2.3 (range, 4.2–9.5) photons per millisecond (ph/ms) and 4.2 ± 0.9 (range, 2.5–11.7) ph/ms in Artisan and Artiflex groups, respectively (P = 0.400). In spite of early postoperative rise, the flare value returned to preoperative levels 6 months after pIOL implantation and remained stable up to 2 years. The amount of flare was not statistically different between Artisan and Artiflex groups in any postoperative follow-up (all P > 0.05). The trend in flare changes was not different between the studied groups (ANCOVA, P = 0.815).ConclusionThe inflammatory response induced by implantation of either type of Artisan and Artiflex pIOLs is short-lived without statistically significant difference between the two models.

The present study explored the extent to which teacher assessment (TA) and peer assessment (PA) differ in terms of magnitude and patterns of distribution across English as a Foreign Language (EFL) learners’ descriptive and narrative writing performance. Twenty Persian-speaking EFL learners were non-randomly selected and voluntarily participated in a 12-session writing course at a private language school in Iran. Their performance on descriptive and narrative writing tasks was subjected to PA and TA sequentially. The West Virginia Department of Education descriptive writing rubric (with five components of organization, development, sentence structure, word choice and grammar, and mechanics) and Smarter Balanced narrative writing rubric (with five categories of narrative focus, organization, elaboration of narrative, language and vocabulary, and conventions) were adopted to schematize and analyze the distribution of the TA and PA comments. The results of frequency analysis indicated that TA far outnumbered PA on both descriptive and narrative genres of writing. Furthermore, on both descriptive and narrative writings, TA and PA commentaries were local in scope, form-focused, fluctuating, and inconsistent. Also, the distribution of TA and PA comments mainly focused on the conventions of narrative writings, while other macro-components of narrative writing had a steady and depleted pattern. The statistical results confirmed the significance of the observed differences between the number and the nature of TA and PA on descriptive and narrative genres of writing. The researchers made their concluding remarks on the probable causes of observed diversities, imposed limitations of the study, and a number of topics for future research.

Biomechanical reinforcement of the cornea by collagen cross-linking (CXL) using riboflavin and ultraviolet A (UV-A) irradiation is a well-established treatment for halting the progression of keratoconus. Corneal pachymetry is one of the most important factors with respect to the safety of CXL. In addition to the initial pachymetric changes, significant changes in corneal pachymetry may occur during the different steps of the procedure, highlighting the role of intraoperative pachymetric measurements. Intraoperative optical coherence tomography (OCT) can be used safely and effectively to monitor the corneal pachymetry during CXL. Among the advantages of this technology is its ability to provide a more detailed profile of the corneal thickness in a noncontact manner compared to the ultrasound method. These features are especially advantageous for monitoring corneal pachymetry in the setting of CXL in KCN patients, considering the marked irregularity of the epithelium and stroma in these patients. OCT has also been used for evaluation of other aspects of the CXL procedure like evaluation of in vivo riboflavin penetration in to the corneal stroma.