Refurbished Tonopen XL
Click to Zoom!

Trial Lens Sets and Trial Frames

Chronological History

1900 - Trial Lens sets

AO produced a trial lens design by Charles Prentice. This set was composed of biconcave minus lenses of true curve out the convex plus lenses were designed to neutralize the minus lenses. This meant that the lenses were almost exactly true vertex refractions or effective power. The first lenses so made. This principle is still used in our trial lens sets. Only the rings & cases have been updated.

1900 - Trial Frames

Used in conjunction with trial lenses.

Please note that all fields followed by an asterisk must be filled in. First Name* First Name* E-mail Address* E-mail Address* Country* Country* Country United States Canada ---------------- Afghanistan Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory British Virgin Islands Brunei Bulgaria Burkina Faso Burundi Cambodia Cameroon Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos Islands Colombia Comoros Congo Cook Islands Costa Rica Croatia Cuba Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic East Timor Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guinea Guinea-Bissau Guyana Haiti Heard and McDonald Islands Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Israel Italy Ivory Coast Jamaica Japan Jordan Kazakhstan Kenya Kiribadi North Korea South Korea Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Federated States of Micronesia Moldova Monaco Mongolia Monserrat Morocco Montenegro Mozambique Myanmar Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Mariana Islands Norway Oman Pakistan Palau Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Island Poland Portugal Puerto Rico Qatar Reunion Romania Russia Rwanda S. Georgia and S. Sandwich Isls. Saint Kitts and Nevis Saint Lucia Saint Vincent and The Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Slovakia Slovenia Solomon Islands Somalia South Africa Spain Sri Lanka St. Helena St. Pierre and Miquelon Sudan Suriname Svalbard and Jan Mayen Islands Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu U.S. Minor Outlying Islands Uganda Ukraine United Arab Emirates United Kingdom Uruguay Uzbekistan Vanuatu Vatican City Venezuela Vietnam US VIrgin Islands Wallis and Futuna Islands Western Sahara Yemen Yugoslavia (former) Zaire Zambia Zimbabwe Business Phone Would you like us to call you? ---Select---\nYes No If you answered YES what time is better to call? ---Select---\nMorning Noon Afternoon Comments Please include brand and model of equipment here.

Done with Trial Lens Sets ? Return to the Optivision2020 home.

Click here for our Used Equipment Special Sale!

---

	We accept all major credit cards
Privacy Policy Terms of Service

Phone: (305) 781 3117

Optivision2020, Inc. and Integral Medical Solutions Inc

9808 NW 80th AVE

Unit 10 - J

Hialeah Gardens FL. 33016