{"id":449,"date":"2019-07-05T11:52:11","date_gmt":"2019-07-05T10:52:11","guid":{"rendered":"https:\/\/research.reading.ac.uk\/childrens-vision\/?page_id=449"},"modified":"2021-09-22T15:58:34","modified_gmt":"2021-09-22T14:58:34","slug":"13th-bielschowsky-lecture-accommodation-and-convergence-ratios-linkages-styles-and-mental-somersaults","status":"publish","type":"page","link":"https:\/\/research.reading.ac.uk\/childrens-vision\/ophthalmologists-orthoptists-optometrists\/13th-bielschowsky-lecture-accommodation-and-convergence-ratios-linkages-styles-and-mental-somersaults\/","title":{"rendered":"13th Bielschowsky Lecture: Accommodation and Convergence – Ratios, Linkages, Styles and Mental Somersaults"},"content":{"rendered":"

I was very honoured to be awarded this prestigious lecture, given in 2018. The full version appears in JAAPOS\u00a0 2019 pp 10-19. https:\/\/doi.org\/10.1016\/j.jaapos.2018.07.004\u00a0<\/a><\/p>\n

Email me for a copy if you do not have access to the Transactions<\/p>\n

Purpose\/Relevance
\nUnderstanding the linkages between accommodation and convergence is fundamental to understanding concomitant strabismus, heterophoria and convergence and accommodation anomalies. The lecture will present an alternative conceptual framework around these two systems which fits clinical characteristics and responses to treatment as well, or better than, current models. The framework is based on the different weights the visual system places on the main cues to target position in depth across development and between patient groups.<\/p>\n

Target audience
\nStrabismologists, developmentalists, and all healthcare professionals managing patients with concomitant strabismus.<\/p>\n

Current practice
\nAccommodative convergence has traditionally been considered the major driver to the motor responses involved in near fixation; existing in a fixed, inflexible relationship expressed as the AC\/A ratio. This viewpoint, however, only fits a small number of clinical diagnoses and fails to explain many others.<\/p>\n

Best practice
\nOur research suggests that the majority of non-strabismic people, and patients with intermittent strabismus, use binocular disparity as their primary visual cue, with blur and proximal\/looming cues having less weight. The convergence to accommodation (CA\/C) linkage is therefore more important than the AC\/A relationship. Between-diagnosis differences in the relative balance between AC\/A and CA\/C relationships can explain many clinical findings.<\/p>\n

Expected outcomes
\nIncreased awareness of accommodation \/ convergence linkages, their strengths, their development and variability, which can be used to explain clinical findings and predict responses to common treatments.<\/p>\n

Instead of thinking \u201caccommodation drives convergence,\u201d or even \u201cconvergence drives accommodation, we should instead think of the visual and non-visual cues which drive both.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

I was very honoured to be awarded this prestigious lecture, given in 2018. The full version appears in JAAPOS\u00a0 2019 pp 10-19. https:\/\/doi.org\/10.1016\/j.jaapos.2018.07.004\u00a0 Email me for a copy if you…Read More ><\/a><\/p>\n","protected":false},"author":43,"featured_media":0,"parent":75,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"__cvm_playback_settings":[],"__cvm_video_id":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-449","page","type-page","status-publish","hentry"],"acf":[],"aioseo_notices":[],"yoast_head":"\n13th Bielschowsky Lecture: Accommodation and Convergence - Ratios, Linkages, Styles and Mental Somersaults - Focus on Children\u2019s Vision<\/title>\n<meta name=\"description\" content=\"This lecture outlines how our research is changing understanding of convergence and accommodation linkages\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/research.reading.ac.uk\/childrens-vision\/ophthalmologists-orthoptists-optometrists\/13th-bielschowsky-lecture-accommodation-and-convergence-ratios-linkages-styles-and-mental-somersaults\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"13th Bielschowsky Lecture: Accommodation and Convergence - 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