1. Write a list of information you want to include in your voicemail greeting. Writing out a list of points to include may sound arduous, but when your voicemail could potentially be the first impression someone has of you, it’s best if it doesn’t come with a bunch of "Um, uh," noises and awkward pauses. You want your voicemail to contain some basic information in a polite manner that will help the caller know that it’s you, and information to leave so you can call back as soon as possible. Include your name (and the company if this is a business voicemail), a statement that lets the caller know you apologize for missing the call, and information you would like from the caller such as name, number, and a brief message concerning the purpose of the call.
5. You have reached [your business]. We are currently closed. Our normal hours of operations are from [hours] [days]. We are closed on [days]. Please leave us a message with your name and number and we will return your call when the office reopens. You may hang up after leaving your message or press the [key] for additional options. Thank you for calling.

Tip: If you are a larger business and this is a voicemail that pertains to the general business number, then you want to sound professional and provide as much information as you think is necessary for a potential client. Usually, the company website URL or the company email is a good way to get the customer to contact you through other means.
An ophthalmologist performs multiple duties related to eye and vision care. He/she may undertake eye surgeries of varying types, suggest medications, and perform eye exams and more. The job requires the utmost concentration and focus.