Effect of accommodation of the lens on ocular pressure

Effects of Static Accommodation Versus Repeated Accommodation on Intraocular Pressure

“…[11][12][13][14][15][16][17] According to Armaly and Rubin, 12 the maximum pressure reduction in the age group between 20 and 25 years is reached after a mean time of 2.7 minutes. They also found that the majority of volunteers attained the effect on IOP by less than 2.5 D of accommodation.…”

“…9,10 These aspects of aqueous humor drainage are supported by several human in vivo studies showing that accommodation increases the facility of outflow and significantly lowers the IOP in normal and in glaucomatous eyes. [11][12][13][14][15][16][17] After entering the anterior chamber, most of the aqueous humor is drained through the trabecular meshwork, into Schlemm canal, the collector channels, and scleral veins. The movement of aqueous humor through the trabecular route is a passive process owing to the pressure difference between the IOP and the episcleral venous pressure.…”

Intraocular Pressure Changes While Reading Smartphone Digital Text Versus Printed Text in Healthy Individuals and those with Glaucoma

“…Unlike the present study, Blake J et al had reported a fall in IOP by 2 mm Hg at 20 minutes of reading. 15 This difference in findings could be because of the wide age range and refractive status of study participants in the abovementioned study. Furthermore, the details regarding the reading conditions, such as the font size, ambient lighting, and reading posture, were not well defined and could be different from the current study.…”

“…Ever since Blake J. et al and Cassidy L. et al reported a fall in IOP in healthy and glaucomatous eyes, a number of studies in the past have demonstrated the role of accommodative effort in reading to be responsible for a fall in IOP. 1,15 However, most of the past studies have induced accommodation using lenses to study its effect on IOP. 4,5 Sustained and continuous accommodative effort, as induced in these studies, may not truly represent the reading conditions encountered daily.…”

Myopia: attempts to arrest progression

“…However, previous studies have found that patients who accommodated at near had slightly lower or similar intraocular pressures. [84][85][86][87] Perhaps during accommodation, traction is exerted on the scleral spur resulting in the opening of the trabecular network and increased aqueous outflow. In addition, there is little conclusive evidence that myopic children have higher intraocular pressures than their emmetropic counterparts.…”