pecten oculi การใช้

• This, in turn may stimulate release of nutrients from pecten oculi to retina, via vitreous humor; it is plausible as bird retina is devoid of its own blood vessels.
• Experiments show that, during saccadic eye oscillations ( which occupy up to 12 % of avian viewing time ), the pecten oculi acts as an agitator, propelling perfusate ( natural lubricants ) toward the retina.
• It is well supplied with blood vessels and appears to keep the retina supplied with nutrients, Exra-high enzymic activity of alkaline phosphatase in pecten oculi has been proposed to support high secretory activity of pecten to supplement nutrition of retina.
• Stray-light absorption by melanin granules of pecten oculi is also considered to give rise to small increments in temperature of pecten and eye; this may offer increased metabolic rate to optimize eye physiology in low temperatures at high-altitude flights.
• In a bird's eye, a specialized organ, rich in blood vessels, the pecten oculi, is also extremely rich in melanin, which has been considered to have role in absorption of light falling on optic disc and using it to warm up the eye.