Pharmacological Treatment of Presbyopia

In this clinical trial, a total of 75 presbyopic patients in the age range of 40 to 60 years old will be participated. The right eyes of 45 patients will be treated by Biocarpine® and they will be considered as the case group, their left eyes will be defined as the controls. In another case group, the right eyes of 30 patients will received Vuity® eye drops and their left eyes will be considered as controls.

The right eyes of 45 patients will be treated by Biocarpine® and Vuity® eye drops. They will be considered as the case group,

One millimeter of pilocarpine eye drop (Bakhtarbiochemistry Company, Iran) contains pilocarpine hydrochloride 1.25% (12.5 mg) as an active ingredient, equivalent to 1.06% (10.6 mg) pilocarpine free-base. The medication preservative is 0.0075% benzalkonium chloride. Inactive ingredients in the ophthalmic are boric acid, sodium citrate dihydrate, sodium chloride, purified water. Another pilocarpine eye drop was Vuity® (1.25% pilocarpine; Allergan company) contains the active intergradients of pilocarpine hydrochloride 1.25% (12.5 mg/mL), equivalent to 1.06% (10.6 mg/mL) pilocarpine free-base and the preservative agents was 0.0075% benzalkonium chloride.

The near vision will be measured based on the LogMAR vision at a distance of 33cm before and one hour after instillation of 1.25% pilocarpine eye drop.

Inclusion Criteria: Subjects with the best corrected visual acuity (BCVA) better than 0.3LogMAR Patients with the symptom of blurred vision at near distance Exclusion Criteria: Patients with amblyopia, cataract, corneal opacity, glaucoma, intraocular surgery, eye troma, congenital pupil anomalies and those with the history of headache and allergy to the eye drop will be excluded from the study.