The Influence of Near Tasks on Intraocular Pressure in Glaucoma Patients
Sadid Hooshmandi1 , Mohammad Pakravan2 , Azadeh Samaeili1 *, Hamed Esfandiari3 , Kiana Hassanpour1 , Shahin Yazdani1 , Farideh Sharifipour1 , Azadeh Doozandeh1 , Bahram Einollahi1 , Parastou Pakravan4
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Science, Tehran, Iran
- Ophthalmic Epidemiology Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, USA 4. Miller School of Miami, University of Miami, Miami, Florida
- Department of Health Information Technology and Management, School of Science, Shahid Beheshti University of Medical Science, Tehran, Iran
Abstract: To investigate the effect of static accommodative tasks on intraocular pressure (IOP) of glaucomatous and normal eyes.
Methods: Three groups of primary open-angle glaucoma (POAG), primary angle closure suspects (PACS), normal matched control and a group of normal young adults (NYA; Age < 40 years) were enrolled
The baseline IOPs were measured after watching a distant target for 15 minutes. Static accommodation was obtained by the near task (reading at 33 cm at daylight (300 lux) for 60 minutes. IOPs were measured 15, 30, 45, and 60 and after fifteen minutes of relaxing accommodation and watching a distant target.
Results: One-hundred and eighteen eyes of 98 subjects were recruited. The study groups consisted of 25 POAG (46 eyes), 24 PACS (47 eyes), 25 matched controls (50 eyes), and 24 NYA (48 eyes).
Within all groups, the mean IOP decreased throughout the accommodation period at all timepoints. Maximum IOP reduction after accommodation was detected at 30-minute time points between POAG subjects, at 45-minute time points in PACS and Matched Control group, and 15 minutes after the relaxation of accommodation in NYA.
IOP reduction showed no statistically significant difference between POAG, PACS and normal matched group in their response to accommodation. However, NYA had significantly lower IOP and greater IOP reduction after the resting period
Conclusion: Static accommodative tasks can significantly reduce the IOP in normal, POAG and PACS individuals. Encouraging glaucoma patients to practice periodical near tasks could be viewed as an adjunctive measure for glaucoma management.
