<prompt> Which of the following is seen retinitis pigmentosa?Aeriolar attenuationNeovascularizationRetinal aery thrombosisPapilledema  <response>: Retinitis pigmentosaApoptosis of rodsAR - most common RISK FACTOR- Consanguineous marriagesCF- Nyctalopia- Ring scotoma nt- Progress to tubular vision constriction of visual fields OE- TRIAD- Pale waxy disc- Aeriolar attenuation- BONE SPICLUE PIGMENTATION characteristic - Gold standard for Dx - ERG- Measures the potential difference ofNeuro sensory layerNORMAL ERG- Negative a -wave- Positive b -wave- Small c -wave sometimes- a-wave - measures the potential difference of photoreceptors- b-wave - measures the potential differenceOf Mullers cells neuroglia bipolarCells neuronal cells In Retinitis Pigmentosa- ERG becomes FLAT 