Methods and compositions for treatment of presbyopia, mydriasis, and other ocular disorders

1. A method of treating presbyopia in a human patient, comprising topically administering to an eye of the human patient in need thereof (i) a dosage of 0.5 mg of phentolamine mesylate and (ii) only one additional agent that improves visual performance, wherein the additional agent is selected from the group consisting of pilocarpine and a pharmaceutically acceptable salt thereof, to thereby treat the presbyopia, wherein the dosage of phentolamine mesylate is administered to the eye no more than once per day, and the additional agent is topically administered to the eye of the patient in an amount ranging from 0.1 mg to 0.5 mg in the form of an ophthalmic solution containing from 0.2% w/w to 0.4% w/w of the additional agent.

2. The method of claim 1 , wherein the additional agent is pilocarpine hydrochloride.

3. The method of claim 1 , wherein the method provides a therapeutic effect against presbyopia for a duration of at least 6 hours.

4. The method of claim 2 , wherein the method provides a therapeutic effect against presbyopia for a duration of at least 6 hours.

5. The method of claim 1 , wherein the method provides a therapeutic effect against presbyopia for a duration of at least 12 hours.

6. The method of claim 2 , wherein the method provides a therapeutic effect against presbyopia for a duration of at least 12 hours.

7. The method of claim 1 , wherein the method results in an improvement in near-vision visual acuity characterized by at least a two-line improvement in the patient's vision measured using a vision chart.

8. The method of claim 2 , wherein the method results in an improvement in near-vision visual acuity characterized by at least a two-line improvement in the patient's vision measured using a vision chart.

9. The method of claim 1 , wherein the method results in an improvement in near-vision visual acuity characterized by at least a three-line improvement in the patient's vision measured using a vision chart.

10. The method of claim 2 , wherein the method results in an improvement in near-vision visual acuity characterized by at least a three-line improvement in the patient's vision measured using a vision chart.

11. The method of claim 1 , wherein the patient experiences an increase in eye redness of no more than one grade measured using the CCLRU Redness Grading Scale compared to the patient's level of eye redness without receiving said dosage of phentolamine mesylate.

12. The method of claim 2 , wherein the patient experiences an increase in eye redness of no more than one grade measured using the CCLRU Redness Grading Scale compared to the patient's level of eye redness without receiving said dosage of phentolamine mesylate.

13. The method of claim 1 , wherein the patient experiences at least a 1 mm reduction in pupil diameter when measured under mesopic conditions relative to the diameter of the patient's pupil under the same mesopic conditions but not having received said dosage.

14. The method of claim 2 , wherein the patient experiences at least a 1 mm reduction in pupil diameter when measured under mesopic conditions relative to the diameter of the patient's pupil under the same mesopic conditions but not having received said dosage.

15. The method of claim 1 , wherein the patient experiences at least a 1 mm reduction in pupil diameter when measured under photopic conditions relative to the diameter of the patient's pupil under the same photopic conditions but not having received said dosage.

16. The method of claim 2 , wherein the patient experiences at least a 1 mm reduction in pupil diameter when measured under photopic conditions relative to the diameter of the patient's pupil under the same photopic conditions but not having received said dosage.

17. The method of claim 1 , wherein the patient experiences the effect of having a pupil diameter of less than 2.2 mm in the eye that received said dosage when measured under photopic conditions.

18. The method of claim 2 , wherein the patient experiences the effect of having a pupil diameter of less than 2.2 mm in the eye that received said dosage when measured under photopic conditions.

19. The method of claim 1 , wherein the dosage is administered as an eye drop.

20. The method of claim 2 , wherein the dosage is administered as an eye drop.

21. The method of claim 1 , wherein the dosage is administered at or near the bedtime of the patient.

22. The method of claim 2 , wherein the dosage is administered at or near the bedtime of the patient.

23. The method of claim 21 , wherein the additional agent is administered to said eye of the patient after administering to said eye of the patient the dosage of phentolamine mesylate.

24. The method of claim 22 , wherein the additional agent is administered to said eye of the patient after administering to said eye of the patient the dosage of phentolamine mesylate.

25. A method of treating presbyopia in a human patient, comprising topically administering to an eye of the human patient in need thereof (i) a dosage of phentolamine mesylate in an amount of from 0.4 mg to 0.6 mg and (ii) only one additional agent that improves visual performance, wherein the additional agent is selected from the group consisting of pilocarpine and a pharmaceutically acceptable salt thereof, to thereby treat the presbyopia, wherein the dosage of phentolamine mesylate is administered to the eye no more than once per day, and the additional agent is topically administered to the eye of the patient in an amount ranging from 0.1 mg to 0.5 mg in the form of an ophthalmic solution containing from 0.2% w/w to 0.4% w/w of the additional agent.

26. The method of claim 25 wherein the additional agent is pilocarpine hydrochloride.