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Glaucoma And Visual Rehabilitation.pptx
- 1. GLAUCOMA AND visual REHABILITATION SATYENDRA S SACHAN ASSISTANTPROFESSOR RAMA UNIVERSITY
- 2. Content Glaucoma Definition Classification Characteristics of IOP Anatomy and tests for Glaucoma Management Low vision Definition of Low Vision Impacts Low Vision Devices Rehabilitative Management for Glaucoma
- 3. Glaucoma A group of diseases of progressive optic neuropathy with loss of retinal neurons and their axons (Nerve Fiber Layer) resulting in blindness if left untreated. https://youtu.be/_VtFBnexqm0
- 5. Definition “Glaucoma describes a group of diseases that kill retinal ganglion cells.” “High IOP is the strongest known risk factor for glaucoma but it is neither necessary nor sufficient to induce the neuropathy.” Ref: Libby, RT, et al: Annu Rev Genomics Hum Genet 6: 15, 2005
- 6. Classification Glaucoma Congenital Acquired Primary Secondary Open angle Close angle Open angle Close angle Phacomorphic Angle rescission Phacolytic Pseudo expholiation Neovascular Steroid Induced Traumati c
- 7. Characteristics of IOP Normal range: 10-21 mm Hg 30-50% of open angle glaucoma patients have IOP <22 mmHg Diurnal fluctuation normally < 6 mmHg Women have slightly higher pressures American Journal of Ophthalmology 2012
- 8. Anatomy of anterior Chamber
- 9. Tests for Glaucoma IOP: CT Schiotz Applanation Tono pen NCT Air puff
- 10. Tests for Glaucoma Angle Structure The Iris Root, The Ciliary Body Band (CBB), The Scleral Spur (SS), The Pigmented / Anterior TM Non-pigmented / Posterior TM The Schwalbe's Line (SL)
- 11. GLAUCOMA Grades of Angle Grade I Grade 0 Grade III Grade II
- 12. Tests for Glaucoma Visual Field Perimetry(Manual) Bjerom’s Screen Perimetry(Automated) HVFA GVFA
- 14. Tests for Glaucoma Posterior segment C:D Fundus Examination
- 15. Clinical features Eye pain Pressure / Heaviness. Headaches. Rainbow-colored halos around lights. Red eyes. Low vision, blurred vision, narrowed vision (tunnel vision) or blind spots. Nausea and vomiting. https://my.clevelandclinic.org/health/diseases/4212- glaucoma#:~:text=Rainbow%2Dcolored%20halos%20around%20lights,Re d%20eyes
- 16. Management Therapeutic Surgical Rehabilitation
- 17. Low vision definition by WHO WHO definition (1992) A person with low vision is one, who has impairment of visual functioning even after treatment and/or standard refractive correction and has Visual Acuity less than 6/18(20/60) to light perception or Visual Field less than 10o from the point of fixation.
- 18. Lighthouse Definition (1996) Functional visual impairment is a significant limitation of visual capability resulting from disease, trauma, or congenital conditions which can not corrected by standard refractive conditions, medications or surgery and manifested by one of the following Insufficient visual resolution (worse than 6/18 in better eye with best correction) Inadequate field if vision (worse than 20o) Reduced peak contrast sensitivity (<1.7 log CS binocularly at high or low illuminances )
- 19. Impacts of ocular disease on patient: Visual disorder: Anatomical changes in the visual organ caused by disease of the eye e.g. Glaucoma, cataract, ARMD Visual impairment: Functional loss that results form visual disorder Visual disability: Vision related changes in the skills and ability of an individual Visually handicapped: Psychological and economical consequences of visual loss such loss of independence and inability to work
- 20. LV Devices Two Types Optical Non-Optical
- 23. Rehabilitative management for Early and Moderate Glaucoma Electronic magnification system CCTV CPF Minus lens or Reverse telescope Prism system Other Non-optical Devices
- 25. Rehabilitative management for End Stage Glaucoma Cane Sighted-guide