Mais conteúdo relacionado Semelhante a Anomalies of refraction (20) Mais de GauriSShrestha (20) Anomalies of refraction15. The disc is often tilted and may be surrounded by chorioretinal atrophy 21. Components of hypermetropia Due to inherent tone of ciliary muscle Not corrected by ciliary tone within range of patients accommodation can’t overcome by accommodation Total Latent Manifest Facultative Absolute 33. Classification; component Total astigmatism = Corneal astigmatism + Internal astigmatism Corneal astigmatism = anterior cornea Internal astigmatism = Posterior corneal, Lens, Retinal = -0.50DC X 090 36. Sturm's Conoid CIRCLE OF LEAST CONFUSION F 1 F 2 INTERVAL OF STURM Rays of light entering cannot converge to a point focus but forms a focal lines Notas do Editor This represents a decrease in ocular refraction of approximately 3 D for the whole period between 3 and 14 years, when growth appears to be complete.